./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 e19ca921 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-dev-e19ca92 [2021-12-22 14:30:55,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:30:55,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:30:55,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:30:55,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:30:55,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:30:55,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:30:55,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:30:55,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:30:55,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:30:55,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:30:55,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:30:55,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:30:55,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:30:55,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:30:55,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:30:55,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:30:55,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:30:55,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:30:55,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:30:55,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:30:55,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:30:55,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:30:55,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:30:55,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:30:55,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:30:55,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:30:55,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:30:55,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:30:55,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:30:55,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:30:55,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:30:55,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:30:55,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:30:55,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:30:55,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:30:55,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:30:55,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:30:55,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:30:55,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:30:55,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:30:55,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:30:55,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:30:55,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:30:55,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:30:55,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:30:55,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:30:55,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:30:55,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:30:55,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:30:55,663 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:30:55,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:30:55,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:30:55,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:30:55,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:30:55,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:30:55,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:30:55,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:30:55,665 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:30:55,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:30:55,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:30:55,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:30:55,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:30:55,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:55,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:30:55,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:30:55,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:30:55,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:30:55,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:30:55,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:30:55,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:30:55,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:30:55,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:30:55,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4705a4099b2770b6bf70acba4c3ce2ea2827cb6710bce661288fee177be59f8c [2021-12-22 14:30:55,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:30:55,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:30:55,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:30:55,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:30:55,854 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:30:55,855 INFO L432 ainManager$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 [2021-12-22 14:30:55,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69cc8c178/fdbf45d379ab4b3ea26d64145f91bd4b/FLAG6f89d9466 [2021-12-22 14:30:56,662 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:30:56,662 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 [2021-12-22 14:30:56,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69cc8c178/fdbf45d379ab4b3ea26d64145f91bd4b/FLAG6f89d9466 [2021-12-22 14:30:56,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69cc8c178/fdbf45d379ab4b3ea26d64145f91bd4b [2021-12-22 14:30:56,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:30:56,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:30:56,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:56,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:30:56,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:30:56,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:56" (1/1) ... [2021-12-22 14:30:56,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298b07d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:56, skipping insertion in model container [2021-12-22 14:30:56,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:56" (1/1) ... [2021-12-22 14:30:56,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:30:57,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:30:59,214 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:30:59,216 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:30:59,216 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:30:59,817 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:30:59,822 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:30:59,823 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:30:59,827 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:01,759 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] [2021-12-22 14:31:01,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:31:02,013 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:31:02,269 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:02,271 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:02,271 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:02,393 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:02,400 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:02,404 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:02,412 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-22 14:31:02,657 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] [2021-12-22 14:31:02,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:31:02,800 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:31:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02 WrapperNode [2021-12-22 14:31:02,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:31:02,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:31:02,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:31:02,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:31:02,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:02,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,087 INFO L137 Inliner]: procedures = 661, calls = 10636, calls flagged for inlining = 235, calls inlined = 88, statements flattened = 5816 [2021-12-22 14:31:03,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:31:03,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:31:03,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:31:03,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:31:03,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:31:03,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:31:03,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:31:03,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:31:03,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (1/1) ... [2021-12-22 14:31:03,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:31:03,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:31:03,278 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) [2021-12-22 14:31:03,284 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 [2021-12-22 14:31:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-12-22 14:31:03,310 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-12-22 14:31:03,310 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_rdev_close [2021-12-22 14:31:03,310 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_rdev_close [2021-12-22 14:31:03,310 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_device [2021-12-22 14:31:03,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_device [2021-12-22 14:31:03,310 INFO L130 BoogieDeclarations]: Found specification of procedure idr_destroy [2021-12-22 14:31:03,310 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_destroy [2021-12-22 14:31:03,310 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_poll_cq_one [2021-12-22 14:31:03,310 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_poll_cq_one [2021-12-22 14:31:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:31:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:31:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_dev_mutex [2021-12-22 14:31:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_dev_mutex [2021-12-22 14:31:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_num_stags [2021-12-22 14:31:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_num_stags [2021-12-22 14:31:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_create [2021-12-22 14:31:03,311 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_create [2021-12-22 14:31:03,311 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_init_ucontext [2021-12-22 14:31:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_init_ucontext [2021-12-22 14:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:31:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure t3_register_cpl_handler [2021-12-22 14:31:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_register_cpl_handler [2021-12-22 14:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure idr_init [2021-12-22 14:31:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_init [2021-12-22 14:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:31:03,313 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_destroy_resource [2021-12-22 14:31:03,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_destroy_resource [2021-12-22 14:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure __cxio_init_resource_fifo [2021-12-22 14:31:03,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __cxio_init_resource_fifo [2021-12-22 14:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-22 14:31:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-22 14:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:31:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_dev_mutex [2021-12-22 14:31:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_dev_mutex [2021-12-22 14:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-22 14:31:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-22 14:31:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_pblpool_free [2021-12-22 14:31:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_pblpool_free [2021-12-22 14:31:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_cxgb3_ofld_send [2021-12-22 14:31:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_cxgb3_ofld_send [2021-12-22 14:31:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_device [2021-12-22 14:31:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_device [2021-12-22 14:31:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 14:31:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 14:31:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2021-12-22 14:31:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2021-12-22 14:31:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:31:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-22 14:31:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-22 14:31:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 14:31:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 14:31:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:31:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:31:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:31:03,318 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:31:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-22 14:31:03,318 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-22 14:31:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_destroy_ctrl_qp [2021-12-22 14:31:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_destroy_ctrl_qp [2021-12-22 14:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_alloc [2021-12-22 14:31:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_alloc [2021-12-22 14:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dbs [2021-12-22 14:31:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dbs [2021-12-22 14:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-22 14:31:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-22 14:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_event_handler [2021-12-22 14:31:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_event_handler [2021-12-22 14:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 14:31:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 14:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-22 14:31:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-22 14:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out [2021-12-22 14:31:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out [2021-12-22 14:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_int_must_check_helper [2021-12-22 14:31:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_int_must_check_helper [2021-12-22 14:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-22 14:31:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-22 14:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2021-12-22 14:31:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2021-12-22 14:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_free [2021-12-22 14:31:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_free [2021-12-22 14:31:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure iwch_poll_cq [2021-12-22 14:31:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure iwch_poll_cq [2021-12-22 14:31:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:31:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:31:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-22 14:31:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-22 14:31:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:31:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:31:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure enable_dbs [2021-12-22 14:31:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_dbs [2021-12-22 14:31:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure t3a_device [2021-12-22 14:31:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t3a_device [2021-12-22 14:31:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_next_cqe [2021-12-22 14:31:03,325 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_next_cqe [2021-12-22 14:31:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-22 14:31:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure close_rnic_dev [2021-12-22 14:31:03,327 INFO L138 BoogieDeclarations]: Found implementation of procedure close_rnic_dev [2021-12-22 14:31:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:31:03,327 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:31:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:31:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_fatal_error [2021-12-22 14:31:03,331 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_fatal_error [2021-12-22 14:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:31:03,331 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-22 14:31:03,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-22 14:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure prandom_u32 [2021-12-22 14:31:03,332 INFO L138 BoogieDeclarations]: Found implementation of procedure prandom_u32 [2021-12-22 14:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 14:31:03,332 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 14:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure open_rnic_dev [2021-12-22 14:31:03,332 INFO L138 BoogieDeclarations]: Found implementation of procedure open_rnic_dev [2021-12-22 14:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_cq_op [2021-12-22 14:31:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_cq_op [2021-12-22 14:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-22 14:31:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-22 14:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 14:31:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 14:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:31:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure cxgb3_ofld_send [2021-12-22 14:31:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure cxgb3_ofld_send [2021-12-22 14:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2021-12-22 14:31:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2021-12-22 14:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure to_iwch_cq [2021-12-22 14:31:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure to_iwch_cq [2021-12-22 14:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure idr_for_each [2021-12-22 14:31:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_for_each [2021-12-22 14:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-22 14:31:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-22 14:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out_r [2021-12-22 14:31:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out_r [2021-12-22 14:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:31:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_destroy [2021-12-22 14:31:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_destroy [2021-12-22 14:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure get_qhp [2021-12-22 14:31:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure get_qhp [2021-12-22 14:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-22 14:31:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-22 14:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:31:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:31:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_init_resource_fifo [2021-12-22 14:31:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_init_resource_fifo [2021-12-22 14:31:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2021-12-22 14:31:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2021-12-22 14:31:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2021-12-22 14:31:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2021-12-22 14:31:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-22 14:31:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-22 14:31:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure cxio_hal_pblpool_destroy [2021-12-22 14:31:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure cxio_hal_pblpool_destroy [2021-12-22 14:31:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure gen_pool_add [2021-12-22 14:31:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure gen_pool_add [2021-12-22 14:31:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure build_fw_riwrh [2021-12-22 14:31:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure build_fw_riwrh [2021-12-22 14:31:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-12-22 14:31:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-12-22 14:31:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-22 14:31:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-22 14:31:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 14:31:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 14:31:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-22 14:31:03,338 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-22 14:31:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:31:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-22 14:31:03,851 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:31:03,853 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:31:14,619 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:31:14,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:31:14,636 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:31:14,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:31:14 BoogieIcfgContainer [2021-12-22 14:31:14,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:31:14,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:31:14,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:31:14,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:31:14,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:30:56" (1/3) ... [2021-12-22 14:31:14,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@904a15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:31:14, skipping insertion in model container [2021-12-22 14:31:14,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:31:02" (2/3) ... [2021-12-22 14:31:14,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@904a15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:31:14, skipping insertion in model container [2021-12-22 14:31:14,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:31:14" (3/3) ... [2021-12-22 14:31:14,645 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw-cxgb3--iw_cxgb3.ko-main.cil.out.i [2021-12-22 14:31:14,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:31:14,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:31:14,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:31:14,701 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 [2021-12-22 14:31:14,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:31:14,735 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) [2021-12-22 14:31:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 14:31:14,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:14,741 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] [2021-12-22 14:31:14,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1033155095, now seen corresponding path program 1 times [2021-12-22 14:31:14,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:14,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272654008] [2021-12-22 14:31:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:14,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:31:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:15,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:15,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272654008] [2021-12-22 14:31:15,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272654008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:15,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:15,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:15,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651833320] [2021-12-22 14:31:15,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:15,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:15,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:15,390 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) [2021-12-22 14:31:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:15,654 INFO L93 Difference]: Finished difference Result 2942 states and 4072 transitions. [2021-12-22 14:31:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:15,656 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 [2021-12-22 14:31:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:15,672 INFO L225 Difference]: With dead ends: 2942 [2021-12-22 14:31:15,673 INFO L226 Difference]: Without dead ends: 1635 [2021-12-22 14:31:15,681 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 [2021-12-22 14:31:15,683 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:15,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 3639 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:31:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-12-22 14:31:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1617. [2021-12-22 14:31:15,798 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) [2021-12-22 14:31:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2175 transitions. [2021-12-22 14:31:15,808 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2175 transitions. Word has length 23 [2021-12-22 14:31:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:15,809 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2175 transitions. [2021-12-22 14:31:15,809 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) [2021-12-22 14:31:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2175 transitions. [2021-12-22 14:31:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:31:15,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:15,812 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] [2021-12-22 14:31:15,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:31:15,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2135032626, now seen corresponding path program 1 times [2021-12-22 14:31:15,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:15,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262578149] [2021-12-22 14:31:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:15,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:31:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 14:31:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:16,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262578149] [2021-12-22 14:31:16,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262578149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:16,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:16,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:31:16,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100765182] [2021-12-22 14:31:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:16,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:31:16,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:31:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:31:16,166 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) [2021-12-22 14:31:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:16,320 INFO L93 Difference]: Finished difference Result 4481 states and 6076 transitions. [2021-12-22 14:31:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:31:16,327 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 [2021-12-22 14:31:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:16,342 INFO L225 Difference]: With dead ends: 4481 [2021-12-22 14:31:16,342 INFO L226 Difference]: Without dead ends: 2867 [2021-12-22 14:31:16,348 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 [2021-12-22 14:31:16,349 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 [2021-12-22 14:31:16,349 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] [2021-12-22 14:31:16,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2021-12-22 14:31:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2863. [2021-12-22 14:31:16,412 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) [2021-12-22 14:31:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3895 transitions. [2021-12-22 14:31:16,422 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3895 transitions. Word has length 32 [2021-12-22 14:31:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:16,422 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 3895 transitions. [2021-12-22 14:31:16,422 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) [2021-12-22 14:31:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3895 transitions. [2021-12-22 14:31:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 14:31:16,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:16,424 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] [2021-12-22 14:31:16,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:31:16,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash 484266896, now seen corresponding path program 1 times [2021-12-22 14:31:16,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:16,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926779291] [2021-12-22 14:31:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:16,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:31:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:31:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:31:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:31:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:16,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:16,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926779291] [2021-12-22 14:31:16,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926779291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:16,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:16,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:16,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173593804] [2021-12-22 14:31:16,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:16,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:16,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:16,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:16,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:16,857 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) [2021-12-22 14:31:19,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:21,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:23,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:23,868 INFO L93 Difference]: Finished difference Result 2966 states and 4065 transitions. [2021-12-22 14:31:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:31:23,873 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 [2021-12-22 14:31:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:23,886 INFO L225 Difference]: With dead ends: 2966 [2021-12-22 14:31:23,887 INFO L226 Difference]: Without dead ends: 2963 [2021-12-22 14:31:23,888 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 [2021-12-22 14:31:23,890 INFO L933 BasicCegarLoop]: 1695 mSDtfsCounter, 1775 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 417 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:23,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 2408 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-12-22 14:31:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2021-12-22 14:31:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2862. [2021-12-22 14:31:23,970 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) [2021-12-22 14:31:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 3893 transitions. [2021-12-22 14:31:23,981 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 3893 transitions. Word has length 51 [2021-12-22 14:31:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:23,982 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 3893 transitions. [2021-12-22 14:31:23,982 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) [2021-12-22 14:31:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 3893 transitions. [2021-12-22 14:31:23,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 14:31:23,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:23,988 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] [2021-12-22 14:31:23,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:31:23,990 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2126832753, now seen corresponding path program 1 times [2021-12-22 14:31:23,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:23,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127909679] [2021-12-22 14:31:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:23,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:31:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:31:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:31:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:31:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:24,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:24,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127909679] [2021-12-22 14:31:24,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127909679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:24,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:24,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:24,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303128294] [2021-12-22 14:31:24,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:24,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:24,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:24,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:24,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:24,415 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) [2021-12-22 14:31:28,820 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 [] [2021-12-22 14:31:30,975 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 [] [2021-12-22 14:31:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:32,702 INFO L93 Difference]: Finished difference Result 3320 states and 4458 transitions. [2021-12-22 14:31:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:31:32,702 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 [2021-12-22 14:31:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:32,714 INFO L225 Difference]: With dead ends: 3320 [2021-12-22 14:31:32,714 INFO L226 Difference]: Without dead ends: 3316 [2021-12-22 14:31:32,715 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 [2021-12-22 14:31:32,716 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 874 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 445 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s 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, 8.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:32,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 3696 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 930 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-12-22 14:31:32,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2021-12-22 14:31:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3185. [2021-12-22 14:31:32,787 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) [2021-12-22 14:31:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4251 transitions. [2021-12-22 14:31:32,799 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4251 transitions. Word has length 52 [2021-12-22 14:31:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:32,800 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 4251 transitions. [2021-12-22 14:31:32,800 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) [2021-12-22 14:31:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4251 transitions. [2021-12-22 14:31:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 14:31:32,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:32,802 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] [2021-12-22 14:31:32,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:31:32,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:32,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1506771635, now seen corresponding path program 1 times [2021-12-22 14:31:32,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:32,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218067512] [2021-12-22 14:31:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:32,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:31:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:31:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:31:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:31:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:33,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:33,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218067512] [2021-12-22 14:31:33,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218067512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:33,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:33,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:33,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399568669] [2021-12-22 14:31:33,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:33,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:33,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:33,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:33,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:33,196 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) [2021-12-22 14:31:35,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:38,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:40,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:40,865 INFO L93 Difference]: Finished difference Result 3316 states and 4452 transitions. [2021-12-22 14:31:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:31:40,865 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 [2021-12-22 14:31:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:40,879 INFO L225 Difference]: With dead ends: 3316 [2021-12-22 14:31:40,879 INFO L226 Difference]: Without dead ends: 3313 [2021-12-22 14:31:40,881 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 [2021-12-22 14:31:40,881 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 1767 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 413 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:40,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 2400 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 625 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-12-22 14:31:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2021-12-22 14:31:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3184. [2021-12-22 14:31:40,995 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) [2021-12-22 14:31:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4249 transitions. [2021-12-22 14:31:41,002 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4249 transitions. Word has length 53 [2021-12-22 14:31:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:41,002 INFO L470 AbstractCegarLoop]: Abstraction has 3184 states and 4249 transitions. [2021-12-22 14:31:41,003 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) [2021-12-22 14:31:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4249 transitions. [2021-12-22 14:31:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 14:31:41,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:41,006 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] [2021-12-22 14:31:41,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:31:41,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash -535248972, now seen corresponding path program 1 times [2021-12-22 14:31:41,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:41,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510886271] [2021-12-22 14:31:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:41,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:41,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:31:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:41,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:31:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:31:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:31:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:41,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:41,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510886271] [2021-12-22 14:31:41,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510886271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:41,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:41,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:41,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123479127] [2021-12-22 14:31:41,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:41,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:41,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:41,365 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) [2021-12-22 14:31:44,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:46,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:48,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:49,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:50,288 INFO L93 Difference]: Finished difference Result 3315 states and 4450 transitions. [2021-12-22 14:31:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:31:50,289 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 [2021-12-22 14:31:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:50,300 INFO L225 Difference]: With dead ends: 3315 [2021-12-22 14:31:50,300 INFO L226 Difference]: Without dead ends: 3312 [2021-12-22 14:31:50,301 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 [2021-12-22 14:31:50,304 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1764 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 411 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:50,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 2396 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 625 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2021-12-22 14:31:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2021-12-22 14:31:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3183. [2021-12-22 14:31:50,420 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) [2021-12-22 14:31:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4247 transitions. [2021-12-22 14:31:50,427 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4247 transitions. Word has length 54 [2021-12-22 14:31:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:50,427 INFO L470 AbstractCegarLoop]: Abstraction has 3183 states and 4247 transitions. [2021-12-22 14:31:50,428 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) [2021-12-22 14:31:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4247 transitions. [2021-12-22 14:31:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 14:31:50,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:50,429 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] [2021-12-22 14:31:50,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:31:50,429 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash 586626518, now seen corresponding path program 1 times [2021-12-22 14:31:50,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:50,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161118688] [2021-12-22 14:31:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:50,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:31:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:50,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:31:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:31:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:31:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:50,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:50,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161118688] [2021-12-22 14:31:50,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161118688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:50,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:50,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:50,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619898968] [2021-12-22 14:31:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:50,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:50,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:50,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:50,716 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) [2021-12-22 14:31:53,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:55,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:31:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:57,080 INFO L93 Difference]: Finished difference Result 3314 states and 4448 transitions. [2021-12-22 14:31:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:31:57,080 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 [2021-12-22 14:31:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:57,091 INFO L225 Difference]: With dead ends: 3314 [2021-12-22 14:31:57,091 INFO L226 Difference]: Without dead ends: 3311 [2021-12-22 14:31:57,092 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 [2021-12-22 14:31:57,093 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 1761 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 411 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 6.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:57,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 2394 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-12-22 14:31:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-12-22 14:31:57,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3182. [2021-12-22 14:31:57,179 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) [2021-12-22 14:31:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4245 transitions. [2021-12-22 14:31:57,185 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4245 transitions. Word has length 55 [2021-12-22 14:31:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:57,185 INFO L470 AbstractCegarLoop]: Abstraction has 3182 states and 4245 transitions. [2021-12-22 14:31:57,185 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) [2021-12-22 14:31:57,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4245 transitions. [2021-12-22 14:31:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 14:31:57,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:57,186 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] [2021-12-22 14:31:57,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:31:57,187 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1005033207, now seen corresponding path program 1 times [2021-12-22 14:31:57,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:57,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470683006] [2021-12-22 14:31:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:57,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:31:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:31:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:31:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:31:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:57,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:57,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470683006] [2021-12-22 14:31:57,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470683006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:57,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:57,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:57,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483930600] [2021-12-22 14:31:57,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:57,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:57,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:57,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:57,512 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) [2021-12-22 14:32:00,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:32:02,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []