./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.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 dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 07:25:41,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 07:25:41,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 07:25:41,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 07:25:41,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 07:25:41,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 07:25:41,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 07:25:41,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 07:25:41,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 07:25:41,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 07:25:41,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 07:25:41,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 07:25:41,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 07:25:41,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 07:25:41,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 07:25:41,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 07:25:41,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 07:25:41,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 07:25:41,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 07:25:41,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 07:25:41,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 07:25:41,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 07:25:41,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 07:25:41,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 07:25:41,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 07:25:41,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 07:25:41,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 07:25:41,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 07:25:41,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 07:25:41,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 07:25:41,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 07:25:41,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 07:25:41,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 07:25:41,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 07:25:41,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 07:25:41,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 07:25:41,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 07:25:41,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 07:25:41,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 07:25:41,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 07:25:41,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 07:25:41,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 07:25:41,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 07:25:41,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 07:25:41,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 07:25:41,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 07:25:41,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 07:25:41,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 07:25:41,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 07:25:41,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 07:25:41,673 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 07:25:41,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 07:25:41,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 07:25:41,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 07:25:41,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 07:25:41,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 07:25:41,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 07:25:41,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 07:25:41,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 07:25:41,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 07:25:41,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 07:25:41,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 07:25:41,676 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 07:25:41,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 07:25:41,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 07:25:41,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 07:25:41,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd6d574d08999b62054724022525ae58fcf8eb53291450098ab652e14e39cce [2021-12-18 07:25:41,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 07:25:41,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 07:25:41,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 07:25:41,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 07:25:41,894 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 07:25:41,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-12-18 07:25:41,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ebb1b27/374d26ef00c24f7f8a793d38037f7300/FLAGbe49fd033 [2021-12-18 07:25:42,672 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 07:25:42,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-12-18 07:25:42,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ebb1b27/374d26ef00c24f7f8a793d38037f7300/FLAGbe49fd033 [2021-12-18 07:25:42,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ebb1b27/374d26ef00c24f7f8a793d38037f7300 [2021-12-18 07:25:42,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 07:25:42,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 07:25:42,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 07:25:42,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 07:25:42,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 07:25:42,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:25:42" (1/1) ... [2021-12-18 07:25:42,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba5e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:42, skipping insertion in model container [2021-12-18 07:25:42,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:25:42" (1/1) ... [2021-12-18 07:25:42,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 07:25:43,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 07:25:46,526 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2021-12-18 07:25:46,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 07:25:47,019 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 07:25:47,392 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[479141,479154] [2021-12-18 07:25:47,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 07:25:47,586 INFO L208 MainTranslator]: Completed translation [2021-12-18 07:25:47,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47 WrapperNode [2021-12-18 07:25:47,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 07:25:47,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 07:25:47,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 07:25:47,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 07:25:47,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:47,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:47,985 INFO L137 Inliner]: procedures = 606, calls = 6407, calls flagged for inlining = 203, calls inlined = 162, statements flattened = 7657 [2021-12-18 07:25:47,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 07:25:47,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 07:25:47,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 07:25:47,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 07:25:47,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:47,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:48,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:48,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:48,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:48,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:48,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:48,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 07:25:48,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 07:25:48,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 07:25:48,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 07:25:48,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (1/1) ... [2021-12-18 07:25:48,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 07:25:48,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 07:25:48,279 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) [2021-12-18 07:25:48,305 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 [2021-12-18 07:25:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-12-18 07:25:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-12-18 07:25:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2021-12-18 07:25:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2021-12-18 07:25:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_5 [2021-12-18 07:25:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_5 [2021-12-18 07:25:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-18 07:25:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-18 07:25:48,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-18 07:25:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 07:25:48,329 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 07:25:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2021-12-18 07:25:48,329 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2021-12-18 07:25:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 07:25:48,329 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 07:25:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 07:25:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 07:25:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2021-12-18 07:25:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2021-12-18 07:25:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-12-18 07:25:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-12-18 07:25:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-18 07:25:48,331 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-18 07:25:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-12-18 07:25:48,331 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-12-18 07:25:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 07:25:48,331 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 07:25:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2021-12-18 07:25:48,331 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2021-12-18 07:25:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-12-18 07:25:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-12-18 07:25:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2021-12-18 07:25:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2021-12-18 07:25:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-18 07:25:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-18 07:25:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 07:25:48,332 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 07:25:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-18 07:25:48,333 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-18 07:25:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2021-12-18 07:25:48,333 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2021-12-18 07:25:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 07:25:48,333 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 07:25:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-18 07:25:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-18 07:25:48,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 07:25:48,334 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-18 07:25:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-18 07:25:48,334 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 07:25:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 07:25:48,334 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-18 07:25:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-18 07:25:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2021-12-18 07:25:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2021-12-18 07:25:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 07:25:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 07:25:48,336 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 07:25:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 07:25:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 07:25:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2021-12-18 07:25:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2021-12-18 07:25:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 07:25:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 07:25:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-12-18 07:25:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-12-18 07:25:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 07:25:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 07:25:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-18 07:25:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-18 07:25:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 07:25:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 07:25:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_set_mac_address [2021-12-18 07:25:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_set_mac_address [2021-12-18 07:25:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2021-12-18 07:25:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2021-12-18 07:25:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 07:25:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 07:25:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 07:25:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 07:25:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 07:25:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 07:25:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 07:25:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 07:25:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 07:25:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 07:25:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 07:25:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 07:25:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-18 07:25:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-18 07:25:48,341 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-12-18 07:25:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-12-18 07:25:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-18 07:25:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-18 07:25:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-12-18 07:25:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-12-18 07:25:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-18 07:25:48,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-18 07:25:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-18 07:25:48,343 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-18 07:25:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-18 07:25:48,343 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-18 07:25:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-12-18 07:25:48,344 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-12-18 07:25:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-18 07:25:48,344 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-18 07:25:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 07:25:48,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 07:25:48,344 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-18 07:25:48,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-18 07:25:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-18 07:25:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-18 07:25:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2021-12-18 07:25:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2021-12-18 07:25:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 07:25:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 07:25:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 07:25:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 07:25:48,346 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-12-18 07:25:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-12-18 07:25:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 07:25:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 07:25:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-18 07:25:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-18 07:25:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-12-18 07:25:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-12-18 07:25:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2021-12-18 07:25:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2021-12-18 07:25:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-12-18 07:25:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-12-18 07:25:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-12-18 07:25:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-12-18 07:25:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 07:25:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 07:25:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 07:25:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 07:25:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-18 07:25:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-18 07:25:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 07:25:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 07:25:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 07:25:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 07:25:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 07:25:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 07:25:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 07:25:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 07:25:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-12-18 07:25:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-12-18 07:25:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-12-18 07:25:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-12-18 07:25:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 07:25:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 07:25:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-18 07:25:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-18 07:25:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 07:25:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 07:25:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 07:25:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2021-12-18 07:25:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2021-12-18 07:25:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 07:25:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-18 07:25:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-18 07:25:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-12-18 07:25:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-12-18 07:25:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-12-18 07:25:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-12-18 07:25:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 07:25:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-12-18 07:25:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-12-18 07:25:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-18 07:25:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-18 07:25:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 07:25:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 07:25:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-18 07:25:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-18 07:25:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-18 07:25:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-18 07:25:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 07:25:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 07:25:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 07:25:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 07:25:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2021-12-18 07:25:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2021-12-18 07:25:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2021-12-18 07:25:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2021-12-18 07:25:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-18 07:25:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-18 07:25:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-18 07:25:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-18 07:25:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-18 07:25:48,360 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-18 07:25:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2021-12-18 07:25:48,361 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2021-12-18 07:25:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-18 07:25:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-18 07:25:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single___1 [2021-12-18 07:25:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single___1 [2021-12-18 07:25:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 07:25:48,362 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 07:25:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2021-12-18 07:25:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2021-12-18 07:25:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2021-12-18 07:25:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2021-12-18 07:25:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 07:25:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 07:25:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2021-12-18 07:25:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2021-12-18 07:25:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2021-12-18 07:25:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mgmt_lock_of_NOT_ARG_SIGN [2021-12-18 07:25:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 07:25:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-18 07:25:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-18 07:25:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2021-12-18 07:25:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_stats_lock_of_NOT_ARG_SIGN [2021-12-18 07:25:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-18 07:25:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-18 07:25:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 07:25:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 07:25:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2021-12-18 07:25:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2021-12-18 07:25:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-12-18 07:25:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-12-18 07:25:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2021-12-18 07:25:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2021-12-18 07:25:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 07:25:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 07:25:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-12-18 07:25:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-12-18 07:25:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 07:25:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 07:25:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2021-12-18 07:25:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2021-12-18 07:25:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-12-18 07:25:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-12-18 07:25:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 07:25:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 07:25:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_5 [2021-12-18 07:25:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_5 [2021-12-18 07:25:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-12-18 07:25:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-12-18 07:25:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-18 07:25:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-18 07:25:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2021-12-18 07:25:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2021-12-18 07:25:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-12-18 07:25:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-12-18 07:25:48,368 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single___0 [2021-12-18 07:25:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single___0 [2021-12-18 07:25:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-18 07:25:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-18 07:25:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-18 07:25:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-18 07:25:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 07:25:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-18 07:25:48,371 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-18 07:25:48,371 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2021-12-18 07:25:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2021-12-18 07:25:49,172 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 07:25:49,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 07:25:49,530 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 07:25:53,167 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 07:25:53,178 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 07:25:53,178 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 07:25:53,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:25:53 BoogieIcfgContainer [2021-12-18 07:25:53,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 07:25:53,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 07:25:53,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 07:25:53,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 07:25:53,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:25:42" (1/3) ... [2021-12-18 07:25:53,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d42c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:25:53, skipping insertion in model container [2021-12-18 07:25:53,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:25:47" (2/3) ... [2021-12-18 07:25:53,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d42c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:25:53, skipping insertion in model container [2021-12-18 07:25:53,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:25:53" (3/3) ... [2021-12-18 07:25:53,187 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-12-18 07:25:53,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 07:25:53,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 07:25:53,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 07:25:53,232 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 [2021-12-18 07:25:53,233 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 07:25:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 1961 states, 1362 states have (on average 1.3127753303964758) internal successors, (1788), 1402 states have internal predecessors, (1788), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) [2021-12-18 07:25:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-18 07:25:53,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:25:53,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:25:53,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:25:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:25:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1446364687, now seen corresponding path program 1 times [2021-12-18 07:25:53,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:25:53,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000550063] [2021-12-18 07:25:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:25:53,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:25:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:25:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:25:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:53,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:25:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:25:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:25:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 07:25:54,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:25:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000550063] [2021-12-18 07:25:54,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000550063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:25:54,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:25:54,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 07:25:54,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423523860] [2021-12-18 07:25:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:25:54,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 07:25:54,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:25:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 07:25:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 07:25:54,051 INFO L87 Difference]: Start difference. First operand has 1961 states, 1362 states have (on average 1.3127753303964758) internal successors, (1788), 1402 states have internal predecessors, (1788), 479 states have call successors, (479), 119 states have call predecessors, (479), 118 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-18 07:25:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:25:57,742 INFO L93 Difference]: Finished difference Result 4087 states and 5885 transitions. [2021-12-18 07:25:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 07:25:57,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-12-18 07:25:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:25:57,783 INFO L225 Difference]: With dead ends: 4087 [2021-12-18 07:25:57,784 INFO L226 Difference]: Without dead ends: 2083 [2021-12-18 07:25:57,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:25:57,804 INFO L933 BasicCegarLoop]: 2621 mSDtfsCounter, 1221 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 1236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 2747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1236 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 07:25:57,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1229 Valid, 4784 Invalid, 2747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1236 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-18 07:25:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-12-18 07:25:57,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1917. [2021-12-18 07:25:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1328 states have (on average 1.2899096385542168) internal successors, (1713), 1358 states have internal predecessors, (1713), 471 states have call successors, (471), 118 states have call predecessors, (471), 117 states have return successors, (458), 456 states have call predecessors, (458), 458 states have call successors, (458) [2021-12-18 07:25:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2642 transitions. [2021-12-18 07:25:57,945 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2642 transitions. Word has length 52 [2021-12-18 07:25:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:25:57,946 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 2642 transitions. [2021-12-18 07:25:57,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-18 07:25:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2642 transitions. [2021-12-18 07:25:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-18 07:25:57,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:25:57,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:25:57,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 07:25:57,956 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:25:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:25:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1870011409, now seen corresponding path program 1 times [2021-12-18 07:25:57,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:25:57,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160231125] [2021-12-18 07:25:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:25:57,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:25:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:25:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:25:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:25:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:25:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:25:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:25:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 07:25:58,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:25:58,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160231125] [2021-12-18 07:25:58,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160231125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:25:58,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:25:58,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:25:58,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536162130] [2021-12-18 07:25:58,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:25:58,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:25:58,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:25:58,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:25:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:25:58,511 INFO L87 Difference]: Start difference. First operand 1917 states and 2642 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-18 07:26:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:05,797 INFO L93 Difference]: Finished difference Result 6036 states and 8473 transitions. [2021-12-18 07:26:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 07:26:05,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2021-12-18 07:26:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:05,819 INFO L225 Difference]: With dead ends: 6036 [2021-12-18 07:26:05,819 INFO L226 Difference]: Without dead ends: 4129 [2021-12-18 07:26:05,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:26:05,827 INFO L933 BasicCegarLoop]: 3056 mSDtfsCounter, 4387 mSDsluCounter, 5411 mSDsCounter, 0 mSdLazyCounter, 4205 mSolverCounterSat, 2587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4721 SdHoareTripleChecker+Valid, 8467 SdHoareTripleChecker+Invalid, 6792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2587 IncrementalHoareTripleChecker+Valid, 4205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:05,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4721 Valid, 8467 Invalid, 6792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2587 Valid, 4205 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-18 07:26:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2021-12-18 07:26:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3789. [2021-12-18 07:26:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2628 states have (on average 1.288812785388128) internal successors, (3387), 2676 states have internal predecessors, (3387), 926 states have call successors, (926), 235 states have call predecessors, (926), 234 states have return successors, (913), 909 states have call predecessors, (913), 913 states have call successors, (913) [2021-12-18 07:26:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5226 transitions. [2021-12-18 07:26:05,952 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5226 transitions. Word has length 52 [2021-12-18 07:26:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:05,953 INFO L470 AbstractCegarLoop]: Abstraction has 3789 states and 5226 transitions. [2021-12-18 07:26:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-18 07:26:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5226 transitions. [2021-12-18 07:26:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-18 07:26:05,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:05,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:05,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 07:26:05,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:05,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:05,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1287472509, now seen corresponding path program 1 times [2021-12-18 07:26:05,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:05,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420375870] [2021-12-18 07:26:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:05,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 07:26:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 07:26:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 07:26:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:06,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:06,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420375870] [2021-12-18 07:26:06,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420375870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:06,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:06,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:06,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446152062] [2021-12-18 07:26:06,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:06,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:06,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:06,457 INFO L87 Difference]: Start difference. First operand 3789 states and 5226 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 07:26:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:11,414 INFO L93 Difference]: Finished difference Result 11913 states and 16735 transitions. [2021-12-18 07:26:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 07:26:11,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2021-12-18 07:26:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:11,462 INFO L225 Difference]: With dead ends: 11913 [2021-12-18 07:26:11,462 INFO L226 Difference]: Without dead ends: 8134 [2021-12-18 07:26:11,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:26:11,488 INFO L933 BasicCegarLoop]: 2935 mSDtfsCounter, 5518 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 3877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5845 SdHoareTripleChecker+Valid, 6154 SdHoareTripleChecker+Invalid, 5932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3877 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:11,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5845 Valid, 6154 Invalid, 5932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3877 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 07:26:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2021-12-18 07:26:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 7446. [2021-12-18 07:26:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7446 states, 5168 states have (on average 1.2890866873065014) internal successors, (6662), 5252 states have internal predecessors, (6662), 1815 states have call successors, (1815), 463 states have call predecessors, (1815), 462 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-12-18 07:26:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 10279 transitions. [2021-12-18 07:26:11,800 INFO L78 Accepts]: Start accepts. Automaton has 7446 states and 10279 transitions. Word has length 73 [2021-12-18 07:26:11,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:11,801 INFO L470 AbstractCegarLoop]: Abstraction has 7446 states and 10279 transitions. [2021-12-18 07:26:11,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 07:26:11,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7446 states and 10279 transitions. [2021-12-18 07:26:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-18 07:26:11,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:11,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:11,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 07:26:11,803 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash 486934852, now seen corresponding path program 1 times [2021-12-18 07:26:11,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:11,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940476074] [2021-12-18 07:26:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:11,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:26:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:12,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:12,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940476074] [2021-12-18 07:26:12,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940476074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:12,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:12,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:12,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655589311] [2021-12-18 07:26:12,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:12,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:12,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:12,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:12,200 INFO L87 Difference]: Start difference. First operand 7446 states and 10279 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:14,873 INFO L93 Difference]: Finished difference Result 8112 states and 11491 transitions. [2021-12-18 07:26:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 07:26:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2021-12-18 07:26:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:14,907 INFO L225 Difference]: With dead ends: 8112 [2021-12-18 07:26:14,907 INFO L226 Difference]: Without dead ends: 8109 [2021-12-18 07:26:14,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:26:14,911 INFO L933 BasicCegarLoop]: 2529 mSDtfsCounter, 3927 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 2097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2097 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:14,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4247 Valid, 3620 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2097 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-18 07:26:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8109 states. [2021-12-18 07:26:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8109 to 7445. [2021-12-18 07:26:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7445 states, 5168 states have (on average 1.2888931888544892) internal successors, (6661), 5251 states have internal predecessors, (6661), 1814 states have call successors, (1814), 463 states have call predecessors, (1814), 462 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-12-18 07:26:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7445 states to 7445 states and 10277 transitions. [2021-12-18 07:26:15,198 INFO L78 Accepts]: Start accepts. Automaton has 7445 states and 10277 transitions. Word has length 72 [2021-12-18 07:26:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:15,199 INFO L470 AbstractCegarLoop]: Abstraction has 7445 states and 10277 transitions. [2021-12-18 07:26:15,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7445 states and 10277 transitions. [2021-12-18 07:26:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-18 07:26:15,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:15,203 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:15,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 07:26:15,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2085748447, now seen corresponding path program 1 times [2021-12-18 07:26:15,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:15,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644724664] [2021-12-18 07:26:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:15,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:26:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:15,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:15,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644724664] [2021-12-18 07:26:15,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644724664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:15,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:15,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:15,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128262970] [2021-12-18 07:26:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:15,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:15,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:15,626 INFO L87 Difference]: Start difference. First operand 7445 states and 10277 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:19,828 INFO L93 Difference]: Finished difference Result 8111 states and 11489 transitions. [2021-12-18 07:26:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 07:26:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2021-12-18 07:26:19,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:19,887 INFO L225 Difference]: With dead ends: 8111 [2021-12-18 07:26:19,887 INFO L226 Difference]: Without dead ends: 8108 [2021-12-18 07:26:19,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:26:19,892 INFO L933 BasicCegarLoop]: 2526 mSDtfsCounter, 3336 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 1470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 5518 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1470 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:19,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3654 Valid, 5518 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1470 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-18 07:26:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8108 states. [2021-12-18 07:26:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8108 to 7444. [2021-12-18 07:26:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 5168 states have (on average 1.2886996904024768) internal successors, (6660), 5250 states have internal predecessors, (6660), 1813 states have call successors, (1813), 463 states have call predecessors, (1813), 462 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-12-18 07:26:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 10275 transitions. [2021-12-18 07:26:20,108 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 10275 transitions. Word has length 73 [2021-12-18 07:26:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:20,109 INFO L470 AbstractCegarLoop]: Abstraction has 7444 states and 10275 transitions. [2021-12-18 07:26:20,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 10275 transitions. [2021-12-18 07:26:20,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-18 07:26:20,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:20,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:20,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 07:26:20,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash -234547225, now seen corresponding path program 1 times [2021-12-18 07:26:20,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:20,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529072635] [2021-12-18 07:26:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:20,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:26:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:20,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:20,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529072635] [2021-12-18 07:26:20,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529072635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:20,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:20,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:20,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592735930] [2021-12-18 07:26:20,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:20,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:20,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:20,502 INFO L87 Difference]: Start difference. First operand 7444 states and 10275 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:23,235 INFO L93 Difference]: Finished difference Result 8124 states and 11496 transitions. [2021-12-18 07:26:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 07:26:23,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2021-12-18 07:26:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:23,260 INFO L225 Difference]: With dead ends: 8124 [2021-12-18 07:26:23,260 INFO L226 Difference]: Without dead ends: 8120 [2021-12-18 07:26:23,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:26:23,264 INFO L933 BasicCegarLoop]: 2518 mSDtfsCounter, 3897 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 2072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2072 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:23,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4224 Valid, 3611 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2072 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-18 07:26:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2021-12-18 07:26:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 7454. [2021-12-18 07:26:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7454 states, 5176 states have (on average 1.2872874806800618) internal successors, (6663), 5256 states have internal predecessors, (6663), 1811 states have call successors, (1811), 467 states have call predecessors, (1811), 466 states have return successors, (1802), 1794 states have call predecessors, (1802), 1802 states have call successors, (1802) [2021-12-18 07:26:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 10276 transitions. [2021-12-18 07:26:23,473 INFO L78 Accepts]: Start accepts. Automaton has 7454 states and 10276 transitions. Word has length 74 [2021-12-18 07:26:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:23,473 INFO L470 AbstractCegarLoop]: Abstraction has 7454 states and 10276 transitions. [2021-12-18 07:26:23,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 7454 states and 10276 transitions. [2021-12-18 07:26:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-18 07:26:23,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:23,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:23,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 07:26:23,475 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1318120676, now seen corresponding path program 1 times [2021-12-18 07:26:23,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:23,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407452217] [2021-12-18 07:26:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:23,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:26:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:23,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407452217] [2021-12-18 07:26:23,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407452217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:23,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:23,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:23,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486118003] [2021-12-18 07:26:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:23,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:23,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:23,823 INFO L87 Difference]: Start difference. First operand 7454 states and 10276 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:28,752 INFO L93 Difference]: Finished difference Result 23624 states and 33459 transitions. [2021-12-18 07:26:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 07:26:28,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2021-12-18 07:26:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:28,826 INFO L225 Difference]: With dead ends: 23624 [2021-12-18 07:26:28,826 INFO L226 Difference]: Without dead ends: 16180 [2021-12-18 07:26:28,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:26:28,865 INFO L933 BasicCegarLoop]: 3132 mSDtfsCounter, 5452 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 3739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5770 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3739 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:28,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5770 Valid, 6463 Invalid, 5833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3739 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-18 07:26:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16180 states. [2021-12-18 07:26:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16180 to 14954. [2021-12-18 07:26:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 10387 states have (on average 1.286415711947627) internal successors, (13362), 10574 states have internal predecessors, (13362), 3608 states have call successors, (3608), 928 states have call predecessors, (3608), 958 states have return successors, (3806), 3579 states have call predecessors, (3806), 3598 states have call successors, (3806) [2021-12-18 07:26:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 20776 transitions. [2021-12-18 07:26:29,484 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 20776 transitions. Word has length 75 [2021-12-18 07:26:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:29,485 INFO L470 AbstractCegarLoop]: Abstraction has 14954 states and 20776 transitions. [2021-12-18 07:26:29,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 20776 transitions. [2021-12-18 07:26:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-18 07:26:29,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:29,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:29,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 07:26:29,491 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2088777078, now seen corresponding path program 1 times [2021-12-18 07:26:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:29,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851881303] [2021-12-18 07:26:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:29,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:26:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:29,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:29,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851881303] [2021-12-18 07:26:29,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851881303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:29,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:29,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:29,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644054512] [2021-12-18 07:26:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:29,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:29,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:29,859 INFO L87 Difference]: Start difference. First operand 14954 states and 20776 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:33,703 INFO L93 Difference]: Finished difference Result 16164 states and 23022 transitions. [2021-12-18 07:26:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 07:26:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2021-12-18 07:26:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:33,768 INFO L225 Difference]: With dead ends: 16164 [2021-12-18 07:26:33,768 INFO L226 Difference]: Without dead ends: 16161 [2021-12-18 07:26:33,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:26:33,782 INFO L933 BasicCegarLoop]: 2525 mSDtfsCounter, 3363 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 1488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3682 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1488 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:33,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3682 Valid, 4518 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1488 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-18 07:26:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16161 states. [2021-12-18 07:26:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16161 to 14953. [2021-12-18 07:26:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14953 states, 10387 states have (on average 1.2863194377587368) internal successors, (13361), 10573 states have internal predecessors, (13361), 3607 states have call successors, (3607), 928 states have call predecessors, (3607), 958 states have return successors, (3806), 3579 states have call predecessors, (3806), 3598 states have call successors, (3806) [2021-12-18 07:26:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14953 states to 14953 states and 20774 transitions. [2021-12-18 07:26:34,243 INFO L78 Accepts]: Start accepts. Automaton has 14953 states and 20774 transitions. Word has length 76 [2021-12-18 07:26:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:34,243 INFO L470 AbstractCegarLoop]: Abstraction has 14953 states and 20774 transitions. [2021-12-18 07:26:34,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14953 states and 20774 transitions. [2021-12-18 07:26:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-18 07:26:34,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:34,245 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:34,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 07:26:34,246 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:34,246 INFO L85 PathProgramCache]: Analyzing trace with hash -328420185, now seen corresponding path program 1 times [2021-12-18 07:26:34,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:34,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358886383] [2021-12-18 07:26:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:34,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:26:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:34,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:34,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358886383] [2021-12-18 07:26:34,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358886383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:34,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:34,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:34,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804143387] [2021-12-18 07:26:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:34,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:34,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:34,680 INFO L87 Difference]: Start difference. First operand 14953 states and 20774 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:41,041 INFO L93 Difference]: Finished difference Result 47213 states and 66747 transitions. [2021-12-18 07:26:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 07:26:41,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2021-12-18 07:26:41,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:41,182 INFO L225 Difference]: With dead ends: 47213 [2021-12-18 07:26:41,183 INFO L226 Difference]: Without dead ends: 32270 [2021-12-18 07:26:41,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:26:41,255 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 4431 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 3051 mSolverCounterSat, 2682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4764 SdHoareTripleChecker+Valid, 7222 SdHoareTripleChecker+Invalid, 5733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2682 IncrementalHoareTripleChecker+Valid, 3051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:41,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4764 Valid, 7222 Invalid, 5733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2682 Valid, 3051 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-18 07:26:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32270 states. [2021-12-18 07:26:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32270 to 29831. [2021-12-18 07:26:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29831 states, 20728 states have (on average 1.2863276727132382) internal successors, (26663), 21097 states have internal predecessors, (26663), 7192 states have call successors, (7192), 1849 states have call predecessors, (7192), 1910 states have return successors, (7606), 7140 states have call predecessors, (7606), 7182 states have call successors, (7606) [2021-12-18 07:26:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29831 states to 29831 states and 41461 transitions. [2021-12-18 07:26:42,402 INFO L78 Accepts]: Start accepts. Automaton has 29831 states and 41461 transitions. Word has length 77 [2021-12-18 07:26:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:42,402 INFO L470 AbstractCegarLoop]: Abstraction has 29831 states and 41461 transitions. [2021-12-18 07:26:42,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 29831 states and 41461 transitions. [2021-12-18 07:26:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-18 07:26:42,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:42,404 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:26:42,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 07:26:42,405 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:42,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1591926483, now seen corresponding path program 1 times [2021-12-18 07:26:42,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:42,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821191914] [2021-12-18 07:26:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:42,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:26:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:26:42,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:42,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821191914] [2021-12-18 07:26:42,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821191914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:42,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:42,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:26:42,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516634263] [2021-12-18 07:26:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:42,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:26:42,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:26:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:26:42,710 INFO L87 Difference]: Start difference. First operand 29831 states and 41461 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:48,038 INFO L93 Difference]: Finished difference Result 32249 states and 45951 transitions. [2021-12-18 07:26:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 07:26:48,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2021-12-18 07:26:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:48,170 INFO L225 Difference]: With dead ends: 32249 [2021-12-18 07:26:48,170 INFO L226 Difference]: Without dead ends: 32235 [2021-12-18 07:26:48,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:26:48,198 INFO L933 BasicCegarLoop]: 2505 mSDtfsCounter, 3326 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3656 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 3685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:48,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3656 Valid, 5482 Invalid, 3685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-18 07:26:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32235 states. [2021-12-18 07:26:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32235 to 29819. [2021-12-18 07:26:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29819 states, 20717 states have (on average 1.2861900854370807) internal successors, (26646), 21085 states have internal predecessors, (26646), 7191 states have call successors, (7191), 1849 states have call predecessors, (7191), 1910 states have return successors, (7606), 7140 states have call predecessors, (7606), 7182 states have call successors, (7606) [2021-12-18 07:26:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29819 states to 29819 states and 41443 transitions. [2021-12-18 07:26:49,282 INFO L78 Accepts]: Start accepts. Automaton has 29819 states and 41443 transitions. Word has length 78 [2021-12-18 07:26:49,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:26:49,282 INFO L470 AbstractCegarLoop]: Abstraction has 29819 states and 41443 transitions. [2021-12-18 07:26:49,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:26:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 29819 states and 41443 transitions. [2021-12-18 07:26:49,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-18 07:26:49,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:26:49,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:26:49,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 07:26:49,289 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:26:49,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:26:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash 293652181, now seen corresponding path program 1 times [2021-12-18 07:26:49,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:26:49,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257181359] [2021-12-18 07:26:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:26:49,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:26:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:26:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:26:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:26:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:26:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 07:26:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 07:26:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 07:26:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 07:26:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:26:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:26:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:26:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 07:26:49,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:26:49,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257181359] [2021-12-18 07:26:49,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257181359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:26:49,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:26:49,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 07:26:49,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926564842] [2021-12-18 07:26:49,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:26:49,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 07:26:49,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:26:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 07:26:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 07:26:49,627 INFO L87 Difference]: Start difference. First operand 29819 states and 41443 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 07:26:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:26:59,152 INFO L93 Difference]: Finished difference Result 85084 states and 119649 transitions. [2021-12-18 07:26:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 07:26:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-18 07:26:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:26:59,371 INFO L225 Difference]: With dead ends: 85084 [2021-12-18 07:26:59,371 INFO L226 Difference]: Without dead ends: 55275 [2021-12-18 07:26:59,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-18 07:26:59,465 INFO L933 BasicCegarLoop]: 2455 mSDtfsCounter, 5348 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 5483 mSolverCounterSat, 3978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5652 SdHoareTripleChecker+Valid, 5347 SdHoareTripleChecker+Invalid, 9461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3978 IncrementalHoareTripleChecker+Valid, 5483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-18 07:26:59,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5652 Valid, 5347 Invalid, 9461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3978 Valid, 5483 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-12-18 07:26:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55275 states. [2021-12-18 07:27:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55275 to 51007. [2021-12-18 07:27:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51007 states, 35437 states have (on average 1.2867906425487485) internal successors, (45600), 36121 states have internal predecessors, (45600), 12187 states have call successors, (12187), 3273 states have call predecessors, (12187), 3382 states have return successors, (12914), 12092 states have call predecessors, (12914), 12178 states have call successors, (12914) [2021-12-18 07:27:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51007 states to 51007 states and 70701 transitions. [2021-12-18 07:27:01,481 INFO L78 Accepts]: Start accepts. Automaton has 51007 states and 70701 transitions. Word has length 113 [2021-12-18 07:27:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:27:01,482 INFO L470 AbstractCegarLoop]: Abstraction has 51007 states and 70701 transitions. [2021-12-18 07:27:01,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 07:27:01,482 INFO L276 IsEmpty]: Start isEmpty. Operand 51007 states and 70701 transitions. [2021-12-18 07:27:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-18 07:27:01,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:27:01,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 07:27:01,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 07:27:01,492 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:27:01,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:27:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash 378795284, now seen corresponding path program 1 times [2021-12-18 07:27:01,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:27:01,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441926361] [2021-12-18 07:27:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:27:01,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:27:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:27:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:27:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 07:27:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 07:27:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 07:27:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 07:27:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 07:27:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 07:27:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-18 07:27:02,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:27:02,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441926361] [2021-12-18 07:27:02,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441926361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:27:02,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:27:02,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 07:27:02,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629232838] [2021-12-18 07:27:02,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:27:02,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 07:27:02,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:27:02,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 07:27:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 07:27:02,327 INFO L87 Difference]: Start difference. First operand 51007 states and 70701 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 07:27:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:27:16,380 INFO L93 Difference]: Finished difference Result 106222 states and 148840 transitions. [2021-12-18 07:27:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 07:27:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-12-18 07:27:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:27:16,601 INFO L225 Difference]: With dead ends: 106222 [2021-12-18 07:27:16,601 INFO L226 Difference]: Without dead ends: 55225 [2021-12-18 07:27:16,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-12-18 07:27:16,875 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 4259 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 10441 mSolverCounterSat, 3200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 8897 SdHoareTripleChecker+Invalid, 13641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3200 IncrementalHoareTripleChecker+Valid, 10441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-12-18 07:27:16,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4675 Valid, 8897 Invalid, 13641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3200 Valid, 10441 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2021-12-18 07:27:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55225 states. [2021-12-18 07:27:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55225 to 50944. [2021-12-18 07:27:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50944 states, 35395 states have (on average 1.2866789094504874) internal successors, (45542), 36086 states have internal predecessors, (45542), 12173 states have call successors, (12173), 3259 states have call predecessors, (12173), 3375 states have return successors, (12891), 12078 states have call predecessors, (12891), 12163 states have call successors, (12891) [2021-12-18 07:27:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50944 states to 50944 states and 70606 transitions. [2021-12-18 07:27:18,858 INFO L78 Accepts]: Start accepts. Automaton has 50944 states and 70606 transitions. Word has length 135 [2021-12-18 07:27:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:27:18,859 INFO L470 AbstractCegarLoop]: Abstraction has 50944 states and 70606 transitions. [2021-12-18 07:27:18,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 07:27:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 50944 states and 70606 transitions. [2021-12-18 07:27:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-18 07:27:18,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:27:18,868 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 07:27:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 07:27:18,868 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:27:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:27:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash -865969197, now seen corresponding path program 1 times [2021-12-18 07:27:18,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:27:18,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844916387] [2021-12-18 07:27:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:27:18,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:27:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:27:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:27:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 07:27:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 07:27:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 07:27:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 07:27:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 07:27:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 07:27:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-18 07:27:19,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:27:19,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844916387] [2021-12-18 07:27:19,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844916387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:27:19,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:27:19,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 07:27:19,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234293288] [2021-12-18 07:27:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:27:19,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 07:27:19,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:27:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 07:27:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:27:19,352 INFO L87 Difference]: Start difference. First operand 50944 states and 70606 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 07:27:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:27:29,775 INFO L93 Difference]: Finished difference Result 60964 states and 87664 transitions. [2021-12-18 07:27:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 07:27:29,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-12-18 07:27:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:27:30,017 INFO L225 Difference]: With dead ends: 60964 [2021-12-18 07:27:30,017 INFO L226 Difference]: Without dead ends: 60869 [2021-12-18 07:27:30,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-12-18 07:27:30,058 INFO L933 BasicCegarLoop]: 3864 mSDtfsCounter, 3988 mSDsluCounter, 12151 mSDsCounter, 0 mSdLazyCounter, 8767 mSolverCounterSat, 2837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4403 SdHoareTripleChecker+Valid, 16015 SdHoareTripleChecker+Invalid, 11604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2837 IncrementalHoareTripleChecker+Valid, 8767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-18 07:27:30,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4403 Valid, 16015 Invalid, 11604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2837 Valid, 8767 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-12-18 07:27:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60869 states. [2021-12-18 07:27:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60869 to 50923. [2021-12-18 07:27:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50923 states, 35392 states have (on average 1.2864771699819169) internal successors, (45531), 36075 states have internal predecessors, (45531), 12155 states have call successors, (12155), 3258 states have call predecessors, (12155), 3375 states have return successors, (12875), 12069 states have call predecessors, (12875), 12147 states have call successors, (12875) [2021-12-18 07:27:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50923 states to 50923 states and 70561 transitions. [2021-12-18 07:27:32,556 INFO L78 Accepts]: Start accepts. Automaton has 50923 states and 70561 transitions. Word has length 135 [2021-12-18 07:27:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:27:32,556 INFO L470 AbstractCegarLoop]: Abstraction has 50923 states and 70561 transitions. [2021-12-18 07:27:32,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 07:27:32,557 INFO L276 IsEmpty]: Start isEmpty. Operand 50923 states and 70561 transitions. [2021-12-18 07:27:32,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-18 07:27:32,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:27:32,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:27:32,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 07:27:32,573 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:27:32,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:27:32,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1337326555, now seen corresponding path program 1 times [2021-12-18 07:27:32,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:27:32,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359715963] [2021-12-18 07:27:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:27:32,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:27:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:27:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:27:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 07:27:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 07:27:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 07:27:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 07:27:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 07:27:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 07:27:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 07:27:33,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:27:33,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359715963] [2021-12-18 07:27:33,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359715963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:27:33,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:27:33,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 07:27:33,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115042777] [2021-12-18 07:27:33,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:27:33,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 07:27:33,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:27:33,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 07:27:33,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 07:27:33,023 INFO L87 Difference]: Start difference. First operand 50923 states and 70561 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 07:27:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:27:43,496 INFO L93 Difference]: Finished difference Result 131415 states and 183906 transitions. [2021-12-18 07:27:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 07:27:43,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 149 [2021-12-18 07:27:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:27:43,878 INFO L225 Difference]: With dead ends: 131415 [2021-12-18 07:27:43,878 INFO L226 Difference]: Without dead ends: 80502 [2021-12-18 07:27:44,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-12-18 07:27:44,232 INFO L933 BasicCegarLoop]: 3753 mSDtfsCounter, 4994 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 4716 mSolverCounterSat, 3915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5378 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 8631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3915 IncrementalHoareTripleChecker+Valid, 4716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-18 07:27:44,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5378 Valid, 6168 Invalid, 8631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3915 Valid, 4716 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-18 07:27:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80502 states. [2021-12-18 07:27:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80502 to 74341. [2021-12-18 07:27:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74341 states, 51796 states have (on average 1.2843655880762994) internal successors, (66525), 52795 states have internal predecessors, (66525), 17471 states have call successors, (17471), 4904 states have call predecessors, (17471), 5073 states have return successors, (18499), 17345 states have call predecessors, (18499), 17463 states have call successors, (18499) [2021-12-18 07:27:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74341 states to 74341 states and 102495 transitions. [2021-12-18 07:27:47,328 INFO L78 Accepts]: Start accepts. Automaton has 74341 states and 102495 transitions. Word has length 149 [2021-12-18 07:27:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:27:47,329 INFO L470 AbstractCegarLoop]: Abstraction has 74341 states and 102495 transitions. [2021-12-18 07:27:47,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 07:27:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 74341 states and 102495 transitions. [2021-12-18 07:27:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-18 07:27:47,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:27:47,343 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 07:27:47,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 07:27:47,344 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:27:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:27:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1653528564, now seen corresponding path program 1 times [2021-12-18 07:27:47,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:27:47,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374063502] [2021-12-18 07:27:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:27:47,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:27:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:27:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:27:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 07:27:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 07:27:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 07:27:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 07:27:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 07:27:48,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:27:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374063502] [2021-12-18 07:27:48,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374063502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 07:27:48,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460161890] [2021-12-18 07:27:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:27:48,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 07:27:48,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 07:27:48,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 07:27:48,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 07:27:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:49,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 7883 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 07:27:49,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 07:27:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-18 07:27:49,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 07:27:49,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460161890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:27:49,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 07:27:49,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2021-12-18 07:27:49,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522029703] [2021-12-18 07:27:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:27:49,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 07:27:49,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:27:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 07:27:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 07:27:49,649 INFO L87 Difference]: Start difference. First operand 74341 states and 102495 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-18 07:27:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:27:52,445 INFO L93 Difference]: Finished difference Result 148696 states and 205026 transitions. [2021-12-18 07:27:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 07:27:52,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 148 [2021-12-18 07:27:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:27:53,007 INFO L225 Difference]: With dead ends: 148696 [2021-12-18 07:27:53,007 INFO L226 Difference]: Without dead ends: 74365 [2021-12-18 07:27:53,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 07:27:53,228 INFO L933 BasicCegarLoop]: 2626 mSDtfsCounter, 0 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5247 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 07:27:53,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5247 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 07:27:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74365 states. [2021-12-18 07:27:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74365 to 74365. [2021-12-18 07:27:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74365 states, 51820 states have (on average 1.2842338865302971) internal successors, (66549), 52819 states have internal predecessors, (66549), 17471 states have call successors, (17471), 4904 states have call predecessors, (17471), 5073 states have return successors, (18499), 17345 states have call predecessors, (18499), 17463 states have call successors, (18499) [2021-12-18 07:27:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74365 states to 74365 states and 102519 transitions. [2021-12-18 07:27:56,524 INFO L78 Accepts]: Start accepts. Automaton has 74365 states and 102519 transitions. Word has length 148 [2021-12-18 07:27:56,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:27:56,525 INFO L470 AbstractCegarLoop]: Abstraction has 74365 states and 102519 transitions. [2021-12-18 07:27:56,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-18 07:27:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 74365 states and 102519 transitions. [2021-12-18 07:27:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-18 07:27:56,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:27:56,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 07:27:56,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 07:27:56,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 07:27:56,768 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:27:56,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:27:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1255235338, now seen corresponding path program 1 times [2021-12-18 07:27:56,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:27:56,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107415974] [2021-12-18 07:27:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:27:56,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:27:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:27:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 07:27:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 07:27:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:27:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:27:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 07:27:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 07:27:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 07:27:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:27:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 07:27:57,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:27:57,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107415974] [2021-12-18 07:27:57,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107415974] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 07:27:57,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956245160] [2021-12-18 07:27:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:27:57,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 07:27:57,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 07:27:57,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 07:27:57,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 07:27:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:27:58,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 7886 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 07:27:58,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 07:27:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-18 07:27:59,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 07:27:59,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956245160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:27:59,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 07:27:59,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-12-18 07:27:59,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848132453] [2021-12-18 07:27:59,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:27:59,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:27:59,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:27:59,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:27:59,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-18 07:27:59,043 INFO L87 Difference]: Start difference. First operand 74365 states and 102519 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)