./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:46:11,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:46:11,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:46:11,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:46:11,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:46:11,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:46:11,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:46:11,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:46:11,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:46:11,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:46:11,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:46:11,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:46:11,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:46:11,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:46:11,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:46:11,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:46:11,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:46:11,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:46:11,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:46:11,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:46:11,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:46:11,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:46:11,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:46:11,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:46:11,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:46:11,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:46:11,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:46:11,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:46:11,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:46:11,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:46:11,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:46:11,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:46:11,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:46:11,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:46:11,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:46:11,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:46:11,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:46:11,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:46:11,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:46:11,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:46:11,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:46:11,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:46:11,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:46:11,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:46:11,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:46:11,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:46:11,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:46:11,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:46:11,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:46:11,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:46:11,689 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:46:11,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:46:11,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:46:11,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:46:11,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:46:11,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:46:11,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:46:11,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:46:11,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:46:11,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:46:11,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:46:11,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:46:11,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:46:11,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:46:11,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:46:11,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:46:11,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:46:11,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:46:11,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:46:11,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:46:11,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:46:11,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:46:11,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:46:11,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-12-14 17:46:11,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:46:11,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:46:11,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:46:11,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:46:11,889 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:46:11,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-12-14 17:46:11,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ece833f/c03f86d9044040478d91d17ce4945180/FLAG3685055f5 [2021-12-14 17:46:12,544 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:46:12,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-12-14 17:46:12,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ece833f/c03f86d9044040478d91d17ce4945180/FLAG3685055f5 [2021-12-14 17:46:12,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ece833f/c03f86d9044040478d91d17ce4945180 [2021-12-14 17:46:12,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:46:12,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:46:12,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:46:12,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:46:12,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:46:12,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:12" (1/1) ... [2021-12-14 17:46:12,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7d88b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:12, skipping insertion in model container [2021-12-14 17:46:12,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:46:12" (1/1) ... [2021-12-14 17:46:12,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:46:13,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:46:13,854 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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-12-14 17:46:14,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:46:14,608 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:46:14,740 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-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-12-14 17:46:14,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:46:15,057 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:46:15,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15 WrapperNode [2021-12-14 17:46:15,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:46:15,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:46:15,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:46:15,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:46:15,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,291 INFO L137 Inliner]: procedures = 247, calls = 2608, calls flagged for inlining = 135, calls inlined = 132, statements flattened = 6382 [2021-12-14 17:46:15,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:46:15,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:46:15,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:46:15,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:46:15,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:46:15,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:46:15,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:46:15,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:46:15,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (1/1) ... [2021-12-14 17:46:15,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:46:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:46:15,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:46:15,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:46:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-12-14 17:46:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-12-14 17:46:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pm_wakeup_card [2021-12-14 17:46:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pm_wakeup_card [2021-12-14 17:46:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:46:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:46:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:46:15,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:46:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-14 17:46:15,591 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-14 17:46:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-12-14 17:46:15,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-12-14 17:46:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:46:15,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:46:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-12-14 17:46:15,591 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-12-14 17:46:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-12-14 17:46:15,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-12-14 17:46:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-14 17:46:15,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-14 17:46:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-14 17:46:15,592 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-14 17:46:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-12-14 17:46:15,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-12-14 17:46:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_map_pci_memory [2021-12-14 17:46:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_map_pci_memory [2021-12-14 17:46:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-12-14 17:46:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-12-14 17:46:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:46:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:46:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 17:46:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 17:46:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:46:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:46:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:46:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:46:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-14 17:46:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-14 17:46:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:46:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:46:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_process_event_ready [2021-12-14 17:46:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_process_event_ready [2021-12-14 17:46:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:46:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:46:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-14 17:46:15,595 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-14 17:46:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-14 17:46:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:46:15,595 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:46:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unmap_pci_memory [2021-12-14 17:46:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unmap_pci_memory [2021-12-14 17:46:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:46:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:46:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_clean_pcie_ring_buf [2021-12-14 17:46:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_clean_pcie_ring_buf [2021-12-14 17:46:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_dev_wakeup_delay [2021-12-14 17:46:15,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_dev_wakeup_delay [2021-12-14 17:46:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_ok_to_access_hw [2021-12-14 17:46:15,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_ok_to_access_hw [2021-12-14 17:46:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:46:15,598 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:46:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_DMA_ADDR [2021-12-14 17:46:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_DMA_ADDR [2021-12-14 17:46:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:46:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:46:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:46:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 17:46:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 17:46:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_resume [2021-12-14 17:46:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_resume [2021-12-14 17:46:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_txbd_ring [2021-12-14 17:46:15,600 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_txbd_ring [2021-12-14 17:46:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:46:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_suspend [2021-12-14 17:46:15,600 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_suspend [2021-12-14 17:46:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:46:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 17:46:15,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 17:46:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:46:15,601 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:46:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_enable_host_int [2021-12-14 17:46:15,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_enable_host_int [2021-12-14 17:46:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_disable_host_int [2021-12-14 17:46:15,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_disable_host_int [2021-12-14 17:46:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_not_full [2021-12-14 17:46:15,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_not_full [2021-12-14 17:46:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-14 17:46:15,602 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-14 17:46:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_evtbd_ring [2021-12-14 17:46:15,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_evtbd_ring [2021-12-14 17:46:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:46:15,603 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:46:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-12-14 17:46:15,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-12-14 17:46:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-14 17:46:15,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-14 17:46:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:46:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 17:46:15,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 17:46:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-14 17:46:15,604 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-14 17:46:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-12-14 17:46:15,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-12-14 17:46:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:46:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:46:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:46:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-14 17:46:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-14 17:46:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_remove [2021-12-14 17:46:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_remove [2021-12-14 17:46:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:46:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_region [2021-12-14 17:46:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_region [2021-12-14 17:46:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_rxbd_ring [2021-12-14 17:46:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_rxbd_ring [2021-12-14 17:46:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:46:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 17:46:15,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 17:46:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-14 17:46:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-14 17:46:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_PACB [2021-12-14 17:46:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_PACB [2021-12-14 17:46:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 17:46:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 17:46:15,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:46:15,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-12-14 17:46:15,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:46:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:46:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_complete [2021-12-14 17:46:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_complete [2021-12-14 17:46:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_empty [2021-12-14 17:46:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_empty [2021-12-14 17:46:16,292 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:46:16,294 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:46:16,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:46:21,668 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:46:21,685 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:46:21,685 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 17:46:21,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:21 BoogieIcfgContainer [2021-12-14 17:46:21,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:46:21,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:46:21,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:46:21,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:46:21,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:46:12" (1/3) ... [2021-12-14 17:46:21,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecebbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:21, skipping insertion in model container [2021-12-14 17:46:21,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:46:15" (2/3) ... [2021-12-14 17:46:21,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecebbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:21, skipping insertion in model container [2021-12-14 17:46:21,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:21" (3/3) ... [2021-12-14 17:46:21,694 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-12-14 17:46:21,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:46:21,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:46:21,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:46:21,753 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:46:21,753 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:46:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2021-12-14 17:46:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 17:46:21,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:21,806 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:46:21,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:21,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1790507018, now seen corresponding path program 1 times [2021-12-14 17:46:21,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:21,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272800874] [2021-12-14 17:46:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:21,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:22,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:22,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 17:46:22,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272800874] [2021-12-14 17:46:22,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272800874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:22,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:22,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:46:22,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407676750] [2021-12-14 17:46:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:22,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:46:22,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:46:22,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:46:22,314 INFO L87 Difference]: Start difference. First operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-14 17:46:24,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:28,664 INFO L93 Difference]: Finished difference Result 4845 states and 7288 transitions. [2021-12-14 17:46:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:46:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-12-14 17:46:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:28,704 INFO L225 Difference]: With dead ends: 4845 [2021-12-14 17:46:28,705 INFO L226 Difference]: Without dead ends: 3260 [2021-12-14 17:46:28,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:46:28,721 INFO L933 BasicCegarLoop]: 2532 mSDtfsCounter, 2777 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 776 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:28,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2975 Valid, 5803 Invalid, 1997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [776 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-12-14 17:46:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-12-14 17:46:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3042. [2021-12-14 17:46:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2325 states have (on average 1.4055913978494623) internal successors, (3268), 2349 states have internal predecessors, (3268), 606 states have call successors, (606), 111 states have call predecessors, (606), 110 states have return successors, (605), 605 states have call predecessors, (605), 605 states have call successors, (605) [2021-12-14 17:46:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4479 transitions. [2021-12-14 17:46:28,921 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4479 transitions. Word has length 39 [2021-12-14 17:46:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:28,922 INFO L470 AbstractCegarLoop]: Abstraction has 3042 states and 4479 transitions. [2021-12-14 17:46:28,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-14 17:46:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4479 transitions. [2021-12-14 17:46:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-14 17:46:28,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:28,931 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:46:28,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:46:28,932 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1277499630, now seen corresponding path program 1 times [2021-12-14 17:46:28,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:28,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655280972] [2021-12-14 17:46:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:28,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:46:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 17:46:29,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:29,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655280972] [2021-12-14 17:46:29,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655280972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:29,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:29,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:46:29,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605188042] [2021-12-14 17:46:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:29,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:46:29,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:46:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:46:29,149 INFO L87 Difference]: Start difference. First operand 3042 states and 4479 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:46:31,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:35,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:37,841 INFO L93 Difference]: Finished difference Result 9539 states and 14216 transitions. [2021-12-14 17:46:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:46:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-12-14 17:46:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:37,875 INFO L225 Difference]: With dead ends: 9539 [2021-12-14 17:46:37,876 INFO L226 Difference]: Without dead ends: 6498 [2021-12-14 17:46:37,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:46:37,891 INFO L933 BasicCegarLoop]: 2609 mSDtfsCounter, 2780 mSDsluCounter, 8130 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 748 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2981 SdHoareTripleChecker+Valid, 10739 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:37,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2981 Valid, 10739 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 1882 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-12-14 17:46:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-12-14 17:46:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 6092. [2021-12-14 17:46:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6092 states, 4657 states have (on average 1.4056259394459953) internal successors, (6546), 4707 states have internal predecessors, (6546), 1208 states have call successors, (1208), 221 states have call predecessors, (1208), 226 states have return successors, (1237), 1211 states have call predecessors, (1237), 1207 states have call successors, (1237) [2021-12-14 17:46:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 8991 transitions. [2021-12-14 17:46:38,171 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 8991 transitions. Word has length 49 [2021-12-14 17:46:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:38,173 INFO L470 AbstractCegarLoop]: Abstraction has 6092 states and 8991 transitions. [2021-12-14 17:46:38,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:46:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 8991 transitions. [2021-12-14 17:46:38,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 17:46:38,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:38,192 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:46:38,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:46:38,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:38,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:38,194 INFO L85 PathProgramCache]: Analyzing trace with hash 41662539, now seen corresponding path program 1 times [2021-12-14 17:46:38,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:38,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475421344] [2021-12-14 17:46:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:38,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:46:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:46:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:46:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:46:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 17:46:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-14 17:46:38,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:38,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475421344] [2021-12-14 17:46:38,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475421344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:38,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:38,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:46:38,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569289633] [2021-12-14 17:46:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:38,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:46:38,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:46:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:46:38,523 INFO L87 Difference]: Start difference. First operand 6092 states and 8991 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:46:40,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:44,108 INFO L93 Difference]: Finished difference Result 13999 states and 20777 transitions. [2021-12-14 17:46:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:46:44,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2021-12-14 17:46:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:44,148 INFO L225 Difference]: With dead ends: 13999 [2021-12-14 17:46:44,148 INFO L226 Difference]: Without dead ends: 7917 [2021-12-14 17:46:44,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:46:44,174 INFO L933 BasicCegarLoop]: 2217 mSDtfsCounter, 1720 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 1188 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 5261 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:44,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 5261 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1188 Valid, 1158 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-12-14 17:46:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7917 states. [2021-12-14 17:46:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7917 to 7421. [2021-12-14 17:46:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 5764 states have (on average 1.4191533657182511) internal successors, (8180), 5814 states have internal predecessors, (8180), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 295 states have return successors, (1390), 1364 states have call predecessors, (1390), 1360 states have call successors, (1390) [2021-12-14 17:46:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 10931 transitions. [2021-12-14 17:46:44,500 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 10931 transitions. Word has length 117 [2021-12-14 17:46:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:44,502 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 10931 transitions. [2021-12-14 17:46:44,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:46:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 10931 transitions. [2021-12-14 17:46:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 17:46:44,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:44,515 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:46:44,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:46:44,515 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:44,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2139715759, now seen corresponding path program 1 times [2021-12-14 17:46:44,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:44,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308602429] [2021-12-14 17:46:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:44,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:46:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:46:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:46:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:46:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:46:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:46:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:46:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:46:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:46:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-14 17:46:45,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:45,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308602429] [2021-12-14 17:46:45,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308602429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:45,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:45,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:46:45,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987544874] [2021-12-14 17:46:45,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:45,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:46:45,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:45,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:46:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:46:45,021 INFO L87 Difference]: Start difference. First operand 7421 states and 10931 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-14 17:46:47,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:52,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:52,165 INFO L93 Difference]: Finished difference Result 15293 states and 22715 transitions. [2021-12-14 17:46:52,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:46:52,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2021-12-14 17:46:52,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:52,200 INFO L225 Difference]: With dead ends: 15293 [2021-12-14 17:46:52,200 INFO L226 Difference]: Without dead ends: 7889 [2021-12-14 17:46:52,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:46:52,220 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 603 mSDsluCounter, 8089 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 685 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 10268 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:52,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 10268 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 2418 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-12-14 17:46:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7889 states. [2021-12-14 17:46:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7889 to 7421. [2021-12-14 17:46:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 5760 states have (on average 1.4180555555555556) internal successors, (8168), 5812 states have internal predecessors, (8168), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 299 states have return successors, (1398), 1366 states have call predecessors, (1398), 1360 states have call successors, (1398) [2021-12-14 17:46:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 10927 transitions. [2021-12-14 17:46:52,434 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 10927 transitions. Word has length 157 [2021-12-14 17:46:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:52,435 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 10927 transitions. [2021-12-14 17:46:52,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-14 17:46:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 10927 transitions. [2021-12-14 17:46:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-14 17:46:52,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:52,447 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:46:52,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:46:52,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -55648936, now seen corresponding path program 1 times [2021-12-14 17:46:52,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:52,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793415365] [2021-12-14 17:46:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:52,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:46:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:46:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:46:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:46:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:46:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:46:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:46:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:46:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:46:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:46:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-14 17:46:52,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:52,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793415365] [2021-12-14 17:46:52,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793415365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:52,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:52,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:46:52,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628133245] [2021-12-14 17:46:52,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:52,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:46:52,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:46:52,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:46:52,833 INFO L87 Difference]: Start difference. First operand 7421 states and 10927 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:46:55,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:58,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:58,523 INFO L93 Difference]: Finished difference Result 15369 states and 22867 transitions. [2021-12-14 17:46:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:46:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2021-12-14 17:46:58,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:58,560 INFO L225 Difference]: With dead ends: 15369 [2021-12-14 17:46:58,560 INFO L226 Difference]: Without dead ends: 7965 [2021-12-14 17:46:58,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:46:58,584 INFO L933 BasicCegarLoop]: 2178 mSDtfsCounter, 909 mSDsluCounter, 6987 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 1026 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 9165 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:58,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 9165 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1026 Valid, 1764 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-12-14 17:46:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2021-12-14 17:46:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7453. [2021-12-14 17:46:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 5784 states have (on average 1.4163208852005533) internal successors, (8192), 5836 states have internal predecessors, (8192), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 307 states have return successors, (1462), 1374 states have call predecessors, (1462), 1360 states have call successors, (1462) [2021-12-14 17:46:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 11015 transitions. [2021-12-14 17:46:58,773 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 11015 transitions. Word has length 164 [2021-12-14 17:46:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:58,774 INFO L470 AbstractCegarLoop]: Abstraction has 7453 states and 11015 transitions. [2021-12-14 17:46:58,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:46:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 11015 transitions. [2021-12-14 17:46:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-14 17:46:58,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:58,786 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:46:58,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:46:58,787 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:58,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:58,788 INFO L85 PathProgramCache]: Analyzing trace with hash -717777381, now seen corresponding path program 1 times [2021-12-14 17:46:58,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:58,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137649546] [2021-12-14 17:46:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:58,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:46:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:46:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:46:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:46:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:46:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:46:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:46:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:46:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:46:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 17:46:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-14 17:46:59,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:59,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137649546] [2021-12-14 17:46:59,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137649546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:59,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:59,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:46:59,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454444131] [2021-12-14 17:46:59,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:59,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:46:59,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:46:59,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:46:59,512 INFO L87 Difference]: Start difference. First operand 7453 states and 11015 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:47:01,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:04,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:47:13,767 INFO L93 Difference]: Finished difference Result 15790 states and 23451 transitions. [2021-12-14 17:47:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:47:13,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 166 [2021-12-14 17:47:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:47:13,808 INFO L225 Difference]: With dead ends: 15790 [2021-12-14 17:47:13,808 INFO L226 Difference]: Without dead ends: 8344 [2021-12-14 17:47:13,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:47:13,828 INFO L933 BasicCegarLoop]: 4243 mSDtfsCounter, 2770 mSDsluCounter, 13883 mSDsCounter, 0 mSdLazyCounter, 4476 mSolverCounterSat, 846 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 18126 SdHoareTripleChecker+Invalid, 5324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 4476 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:47:13,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 18126 Invalid, 5324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 4476 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2021-12-14 17:47:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8344 states. [2021-12-14 17:47:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8344 to 7492. [2021-12-14 17:47:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7492 states, 5814 states have (on average 1.41468868249054) internal successors, (8225), 5869 states have internal predecessors, (8225), 1367 states have call successors, (1367), 293 states have call predecessors, (1367), 310 states have return successors, (1468), 1377 states have call predecessors, (1468), 1366 states have call successors, (1468) [2021-12-14 17:47:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7492 states to 7492 states and 11060 transitions. [2021-12-14 17:47:14,048 INFO L78 Accepts]: Start accepts. Automaton has 7492 states and 11060 transitions. Word has length 166 [2021-12-14 17:47:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:47:14,049 INFO L470 AbstractCegarLoop]: Abstraction has 7492 states and 11060 transitions. [2021-12-14 17:47:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:47:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7492 states and 11060 transitions. [2021-12-14 17:47:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-14 17:47:14,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:47:14,061 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:47:14,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:47:14,061 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:47:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:47:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -123678410, now seen corresponding path program 1 times [2021-12-14 17:47:14,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:47:14,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652451055] [2021-12-14 17:47:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:47:14,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:47:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:47:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:47:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:47:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:47:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:47:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:47:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:47:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:47:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:47:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:47:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 17:47:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:47:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:47:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:47:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:47:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:15,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:47:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:47:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:47:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-14 17:47:15,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:47:15,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652451055] [2021-12-14 17:47:15,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652451055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:47:15,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:47:15,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-14 17:47:15,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740145444] [2021-12-14 17:47:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:47:15,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 17:47:15,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:47:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 17:47:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-12-14 17:47:15,215 INFO L87 Difference]: Start difference. First operand 7492 states and 11060 transitions. Second operand has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 11 states have internal predecessors, (111), 3 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17)