./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.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 a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:29:52,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:29:52,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:29:52,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:29:52,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:29:52,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:29:52,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:29:52,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:29:52,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:29:52,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:29:52,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:29:52,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:29:52,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:29:52,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:29:52,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:29:52,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:29:52,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:29:52,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:29:52,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:29:52,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:29:52,840 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:29:52,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:29:52,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:29:52,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:29:52,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:29:52,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:29:52,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:29:52,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:29:52,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:29:52,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:29:52,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:29:52,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:29:52,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:29:52,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:29:52,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:29:52,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:29:52,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:29:52,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:29:52,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:29:52,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:29:52,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:29:52,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:29:52,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:29:52,892 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:29:52,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:29:52,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:29:52,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:29:52,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:29:52,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:29:52,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:29:52,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:29:52,896 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:29:52,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:29:52,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:29:52,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:29:52,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:29:52,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:29:52,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:29:52,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:29:52,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:29:52,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:29:52,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:29:52,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:29:52,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:29:52,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:29:52,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:29:52,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:29:52,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:29:52,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:29:52,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:29:52,902 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:29:52,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:29:52,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:29:52,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2022-07-12 12:29:53,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:29:53,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:29:53,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:29:53,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:29:53,170 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:29:53,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-07-12 12:29:53,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27db82196/063d0699f8d14c0aae6174bde14f537d/FLAG896652ce1 [2022-07-12 12:29:53,941 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:29:53,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-07-12 12:29:53,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27db82196/063d0699f8d14c0aae6174bde14f537d/FLAG896652ce1 [2022-07-12 12:29:54,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27db82196/063d0699f8d14c0aae6174bde14f537d [2022-07-12 12:29:54,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:29:54,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:29:54,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:29:54,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:29:54,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:29:54,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:29:54" (1/1) ... [2022-07-12 12:29:54,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6f40b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:54, skipping insertion in model container [2022-07-12 12:29:54,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:29:54" (1/1) ... [2022-07-12 12:29:54,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:29:54,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:29:54,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-07-12 12:29:55,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:29:55,461 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:29:55,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-07-12 12:29:55,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:29:55,849 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:29:55,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55 WrapperNode [2022-07-12 12:29:55,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:29:55,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:29:55,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:29:55,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:29:55,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:55,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,055 INFO L137 Inliner]: procedures = 199, calls = 723, calls flagged for inlining = 106, calls inlined = 103, statements flattened = 2466 [2022-07-12 12:29:56,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:29:56,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:29:56,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:29:56,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:29:56,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:29:56,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:29:56,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:29:56,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:29:56,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (1/1) ... [2022-07-12 12:29:56,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:29:56,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:56,277 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) [2022-07-12 12:29:56,298 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 [2022-07-12 12:29:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:29:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:29:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-12 12:29:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-12 12:29:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:29:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:29:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:29:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:29:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure setup_descriptors [2022-07-12 12:29:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_descriptors [2022-07-12 12:29:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-12 12:29:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-12 12:29:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure disable_all_interrupts [2022-07-12 12:29:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_all_interrupts [2022-07-12 12:29:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:29:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:29:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_interrupt [2022-07-12 12:29:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_interrupt [2022-07-12 12:29:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 12:29:56,317 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 12:29:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:29:56,317 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:29:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-07-12 12:29:56,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-07-12 12:29:56,317 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-12 12:29:56,318 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-12 12:29:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:29:56,318 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:29:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_write_descriptor [2022-07-12 12:29:56,318 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_write_descriptor [2022-07-12 12:29:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-12 12:29:56,318 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-12 12:29:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:29:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-12 12:29:56,319 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-12 12:29:56,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:29:56,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-12 12:29:56,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-12 12:29:56,320 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-07-12 12:29:56,320 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-07-12 12:29:56,320 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-12 12:29:56,320 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-12 12:29:56,320 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 12:29:56,321 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 12:29:56,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:29:56,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:29:56,321 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_read_descriptor [2022-07-12 12:29:56,321 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_read_descriptor [2022-07-12 12:29:56,322 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-12 12:29:56,322 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-12 12:29:56,322 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-12 12:29:56,322 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-12 12:29:56,322 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 12:29:56,322 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 12:29:56,323 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 12:29:56,323 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 12:29:56,323 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-12 12:29:56,324 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-12 12:29:56,324 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2022-07-12 12:29:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2022-07-12 12:29:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:29:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:29:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:29:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-07-12 12:29:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-07-12 12:29:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-12 12:29:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-12 12:29:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:29:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-12 12:29:56,326 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-12 12:29:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:29:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-12 12:29:56,327 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-12 12:29:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:29:56,327 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:29:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_poll_controller [2022-07-12 12:29:56,327 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_poll_controller [2022-07-12 12:29:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:29:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-12 12:29:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-12 12:29:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:29:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:29:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure receive_active [2022-07-12 12:29:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure receive_active [2022-07-12 12:29:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:29:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:29:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-12 12:29:56,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-12 12:29:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:29:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_active [2022-07-12 12:29:56,330 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_active [2022-07-12 12:29:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-12 12:29:56,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-12 12:29:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_receive [2022-07-12 12:29:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_receive [2022-07-12 12:29:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-07-12 12:29:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-07-12 12:29:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 12:29:56,332 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 12:29:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-12 12:29:56,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-12 12:29:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:29:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:29:56,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:29:56,866 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:29:56,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:29:57,066 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:29:58,413 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:29:58,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:29:58,433 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 12:29:58,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:29:58 BoogieIcfgContainer [2022-07-12 12:29:58,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:29:58,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:29:58,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:29:58,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:29:58,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:29:54" (1/3) ... [2022-07-12 12:29:58,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517e7a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:29:58, skipping insertion in model container [2022-07-12 12:29:58,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:29:55" (2/3) ... [2022-07-12 12:29:58,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517e7a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:29:58, skipping insertion in model container [2022-07-12 12:29:58,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:29:58" (3/3) ... [2022-07-12 12:29:58,450 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-07-12 12:29:58,464 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:29:58,464 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:29:58,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:29:58,568 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b020ff6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d917f16 [2022-07-12 12:29:58,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:29:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 888 states, 644 states have (on average 1.406832298136646) internal successors, (906), 659 states have internal predecessors, (906), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) [2022-07-12 12:29:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-12 12:29:58,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:58,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:58,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:58,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash -979232113, now seen corresponding path program 1 times [2022-07-12 12:29:58,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:58,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044937197] [2022-07-12 12:29:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:29:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:29:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:29:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:59,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044937197] [2022-07-12 12:29:59,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044937197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:59,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:29:59,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:29:59,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797199532] [2022-07-12 12:29:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:29:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:29:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:29:59,125 INFO L87 Difference]: Start difference. First operand has 888 states, 644 states have (on average 1.406832298136646) internal successors, (906), 659 states have internal predecessors, (906), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:30:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:01,674 INFO L93 Difference]: Finished difference Result 2727 states and 4064 transitions. [2022-07-12 12:30:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:30:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-07-12 12:30:01,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:01,717 INFO L225 Difference]: With dead ends: 2727 [2022-07-12 12:30:01,718 INFO L226 Difference]: Without dead ends: 1818 [2022-07-12 12:30:01,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:30:01,734 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 1491 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:01,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 2712 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 12:30:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-07-12 12:30:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1720. [2022-07-12 12:30:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1254 states have (on average 1.2854864433811801) internal successors, (1612), 1268 states have internal predecessors, (1612), 381 states have call successors, (381), 85 states have call predecessors, (381), 84 states have return successors, (380), 378 states have call predecessors, (380), 380 states have call successors, (380) [2022-07-12 12:30:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2373 transitions. [2022-07-12 12:30:01,927 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2373 transitions. Word has length 35 [2022-07-12 12:30:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:01,928 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2373 transitions. [2022-07-12 12:30:01,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:30:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2373 transitions. [2022-07-12 12:30:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 12:30:01,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:01,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:01,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:30:01,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:01,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2045075246, now seen corresponding path program 1 times [2022-07-12 12:30:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:01,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052079074] [2022-07-12 12:30:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:01,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 12:30:02,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:02,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052079074] [2022-07-12 12:30:02,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052079074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:02,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:30:02,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:30:02,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140243223] [2022-07-12 12:30:02,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:02,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:30:02,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:02,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:30:02,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:30:02,128 INFO L87 Difference]: Start difference. First operand 1720 states and 2373 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:30:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:05,097 INFO L93 Difference]: Finished difference Result 5329 states and 7448 transitions. [2022-07-12 12:30:05,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:30:05,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-07-12 12:30:05,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:05,119 INFO L225 Difference]: With dead ends: 5329 [2022-07-12 12:30:05,119 INFO L226 Difference]: Without dead ends: 3614 [2022-07-12 12:30:05,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:30:05,136 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1461 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 4347 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:05,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 4347 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 12:30:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-07-12 12:30:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3446. [2022-07-12 12:30:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2511 states have (on average 1.2855436081242533) internal successors, (3228), 2543 states have internal predecessors, (3228), 758 states have call successors, (758), 169 states have call predecessors, (758), 176 states have return successors, (802), 755 states have call predecessors, (802), 757 states have call successors, (802) [2022-07-12 12:30:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4788 transitions. [2022-07-12 12:30:05,306 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4788 transitions. Word has length 38 [2022-07-12 12:30:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:05,307 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 4788 transitions. [2022-07-12 12:30:05,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:30:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4788 transitions. [2022-07-12 12:30:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 12:30:05,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:05,319 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:05,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:30:05,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash -792223232, now seen corresponding path program 1 times [2022-07-12 12:30:05,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:05,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019725100] [2022-07-12 12:30:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:05,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:30:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:30:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 12:30:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:30:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 12:30:05,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:05,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019725100] [2022-07-12 12:30:05,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019725100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:05,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:30:05,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:30:05,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226034644] [2022-07-12 12:30:05,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:05,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:30:05,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:30:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:30:05,648 INFO L87 Difference]: Start difference. First operand 3446 states and 4788 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:07,966 INFO L93 Difference]: Finished difference Result 9226 states and 12829 transitions. [2022-07-12 12:30:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:30:07,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-12 12:30:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:07,999 INFO L225 Difference]: With dead ends: 9226 [2022-07-12 12:30:07,999 INFO L226 Difference]: Without dead ends: 5790 [2022-07-12 12:30:08,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:30:08,015 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 1465 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:08,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 3233 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 12:30:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2022-07-12 12:30:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5402. [2022-07-12 12:30:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 3965 states have (on average 1.2799495586380831) internal successors, (5075), 4033 states have internal predecessors, (5075), 1108 states have call successors, (1108), 309 states have call predecessors, (1108), 328 states have return successors, (1187), 1095 states have call predecessors, (1187), 1107 states have call successors, (1187) [2022-07-12 12:30:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 7370 transitions. [2022-07-12 12:30:08,283 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 7370 transitions. Word has length 143 [2022-07-12 12:30:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:08,285 INFO L495 AbstractCegarLoop]: Abstraction has 5402 states and 7370 transitions. [2022-07-12 12:30:08,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 7370 transitions. [2022-07-12 12:30:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 12:30:08,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:08,295 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:08,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:30:08,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash 146331670, now seen corresponding path program 1 times [2022-07-12 12:30:08,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:08,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663084558] [2022-07-12 12:30:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:08,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:30:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:30:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:30:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:30:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:30:08,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:08,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663084558] [2022-07-12 12:30:08,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663084558] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:30:08,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164010946] [2022-07-12 12:30:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:08,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:08,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:30:08,720 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) [2022-07-12 12:30:08,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:30:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:09,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:30:09,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:30:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:30:09,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:30:09,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164010946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:09,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:30:09,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-12 12:30:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230408699] [2022-07-12 12:30:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:09,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:30:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:30:09,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:30:09,511 INFO L87 Difference]: Start difference. First operand 5402 states and 7370 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:10,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:10,537 INFO L93 Difference]: Finished difference Result 16194 states and 22104 transitions. [2022-07-12 12:30:10,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:30:10,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2022-07-12 12:30:10,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:10,602 INFO L225 Difference]: With dead ends: 16194 [2022-07-12 12:30:10,603 INFO L226 Difference]: Without dead ends: 10802 [2022-07-12 12:30:10,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:30:10,626 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 1094 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 4777 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:10,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 4777 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 12:30:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10802 states. [2022-07-12 12:30:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10802 to 10762. [2022-07-12 12:30:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10762 states, 7889 states have (on average 1.2814044872607429) internal successors, (10109), 8061 states have internal predecessors, (10109), 2212 states have call successors, (2212), 617 states have call predecessors, (2212), 660 states have return successors, (2375), 2155 states have call predecessors, (2375), 2211 states have call successors, (2375) [2022-07-12 12:30:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 14696 transitions. [2022-07-12 12:30:11,106 INFO L78 Accepts]: Start accepts. Automaton has 10762 states and 14696 transitions. Word has length 136 [2022-07-12 12:30:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:11,107 INFO L495 AbstractCegarLoop]: Abstraction has 10762 states and 14696 transitions. [2022-07-12 12:30:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10762 states and 14696 transitions. [2022-07-12 12:30:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 12:30:11,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:11,115 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:11,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 12:30:11,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:11,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2041881488, now seen corresponding path program 1 times [2022-07-12 12:30:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:11,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122850495] [2022-07-12 12:30:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:30:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:30:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:30:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:30:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:30:11,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:11,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122850495] [2022-07-12 12:30:11,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122850495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:30:11,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319838549] [2022-07-12 12:30:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:11,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:11,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:30:11,757 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) [2022-07-12 12:30:11,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:30:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:12,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:30:12,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:30:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:30:12,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:30:12,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319838549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:12,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:30:12,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-12 12:30:12,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972743932] [2022-07-12 12:30:12,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:12,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:30:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:12,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:30:12,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:30:12,447 INFO L87 Difference]: Start difference. First operand 10762 states and 14696 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:13,760 INFO L93 Difference]: Finished difference Result 32274 states and 44082 transitions. [2022-07-12 12:30:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:30:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2022-07-12 12:30:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:13,862 INFO L225 Difference]: With dead ends: 32274 [2022-07-12 12:30:13,862 INFO L226 Difference]: Without dead ends: 21522 [2022-07-12 12:30:13,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:30:13,904 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 1097 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 5055 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:13,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 5055 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 12:30:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21522 states. [2022-07-12 12:30:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21522 to 21514. [2022-07-12 12:30:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21514 states, 15769 states have (on average 1.2815650960745768) internal successors, (20209), 16117 states have internal predecessors, (20209), 4420 states have call successors, (4420), 1233 states have call predecessors, (4420), 1324 states have return successors, (4739), 4307 states have call predecessors, (4739), 4419 states have call successors, (4739) [2022-07-12 12:30:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21514 states to 21514 states and 29368 transitions. [2022-07-12 12:30:14,836 INFO L78 Accepts]: Start accepts. Automaton has 21514 states and 29368 transitions. Word has length 137 [2022-07-12 12:30:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:14,837 INFO L495 AbstractCegarLoop]: Abstraction has 21514 states and 29368 transitions. [2022-07-12 12:30:14,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 21514 states and 29368 transitions. [2022-07-12 12:30:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 12:30:14,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:14,844 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:14,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:30:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:15,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash -756334801, now seen corresponding path program 1 times [2022-07-12 12:30:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:15,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743939118] [2022-07-12 12:30:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 12:30:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:30:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:30:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:30:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:30:15,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:15,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743939118] [2022-07-12 12:30:15,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743939118] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:30:15,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115759869] [2022-07-12 12:30:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:15,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:15,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:30:15,486 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:30:15,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 12:30:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:15,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:30:15,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:30:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:30:16,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:30:16,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115759869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:16,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:30:16,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-12 12:30:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432818977] [2022-07-12 12:30:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:16,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:30:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:30:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:30:16,084 INFO L87 Difference]: Start difference. First operand 21514 states and 29368 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:17,777 INFO L93 Difference]: Finished difference Result 64530 states and 88098 transitions. [2022-07-12 12:30:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:30:17,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2022-07-12 12:30:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:18,009 INFO L225 Difference]: With dead ends: 64530 [2022-07-12 12:30:18,009 INFO L226 Difference]: Without dead ends: 43026 [2022-07-12 12:30:18,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:30:18,093 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1106 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:18,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 4358 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 12:30:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43026 states. [2022-07-12 12:30:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43026 to 43018. [2022-07-12 12:30:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43018 states, 31529 states have (on average 1.2816454692505312) internal successors, (40409), 32229 states have internal predecessors, (40409), 8836 states have call successors, (8836), 2465 states have call predecessors, (8836), 2652 states have return successors, (9443), 8611 states have call predecessors, (9443), 8835 states have call successors, (9443) [2022-07-12 12:30:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43018 states to 43018 states and 58688 transitions. [2022-07-12 12:30:19,699 INFO L78 Accepts]: Start accepts. Automaton has 43018 states and 58688 transitions. Word has length 138 [2022-07-12 12:30:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:19,701 INFO L495 AbstractCegarLoop]: Abstraction has 43018 states and 58688 transitions. [2022-07-12 12:30:19,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 43018 states and 58688 transitions. [2022-07-12 12:30:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 12:30:19,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:19,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:19,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 12:30:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:19,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash 841584681, now seen corresponding path program 1 times [2022-07-12 12:30:19,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:19,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864317586] [2022-07-12 12:30:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:19,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:30:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:30:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:30:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:30:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:30:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:20,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864317586] [2022-07-12 12:30:20,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864317586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:30:20,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714177483] [2022-07-12 12:30:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:20,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:20,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:30:20,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:30:20,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 12:30:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:21,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:30:21,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:30:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:30:21,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:30:21,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714177483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:21,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:30:21,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-12 12:30:21,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826492669] [2022-07-12 12:30:21,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:21,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:30:21,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:21,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:30:21,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:30:21,307 INFO L87 Difference]: Start difference. First operand 43018 states and 58688 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:23,847 INFO L93 Difference]: Finished difference Result 129042 states and 176058 transitions. [2022-07-12 12:30:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:30:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2022-07-12 12:30:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:24,362 INFO L225 Difference]: With dead ends: 129042 [2022-07-12 12:30:24,363 INFO L226 Difference]: Without dead ends: 85470 [2022-07-12 12:30:24,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:30:24,601 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1105 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:24,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 4167 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:30:24,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85470 states. [2022-07-12 12:30:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85470 to 85460. [2022-07-12 12:30:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85460 states, 62615 states have (on average 1.2817535734248982) internal successors, (80257), 64003 states have internal predecessors, (80257), 17590 states have call successors, (17590), 4891 states have call predecessors, (17590), 5254 states have return successors, (18706), 17139 states have call predecessors, (18706), 17589 states have call successors, (18706) [2022-07-12 12:30:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85460 states to 85460 states and 116553 transitions. [2022-07-12 12:30:28,268 INFO L78 Accepts]: Start accepts. Automaton has 85460 states and 116553 transitions. Word has length 139 [2022-07-12 12:30:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:28,269 INFO L495 AbstractCegarLoop]: Abstraction has 85460 states and 116553 transitions. [2022-07-12 12:30:28,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 12:30:28,269 INFO L276 IsEmpty]: Start isEmpty. Operand 85460 states and 116553 transitions. [2022-07-12 12:30:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-12 12:30:28,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:28,275 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-07-12 12:30:28,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 12:30:28,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:28,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash 94199557, now seen corresponding path program 1 times [2022-07-12 12:30:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:28,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65918475] [2022-07-12 12:30:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:30:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:30:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:30:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:30:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:30:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 12:30:28,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:28,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65918475] [2022-07-12 12:30:28,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65918475] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:30:28,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078767349] [2022-07-12 12:30:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:28,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:30:28,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:30:28,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 12:30:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:29,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:30:29,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:30:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 12:30:29,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:30:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 12:30:29,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078767349] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:30:29,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:30:29,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2022-07-12 12:30:29,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142042548] [2022-07-12 12:30:29,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:30:29,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 12:30:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:29,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 12:30:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-07-12 12:30:29,771 INFO L87 Difference]: Start difference. First operand 85460 states and 116553 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-12 12:30:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:43,918 INFO L93 Difference]: Finished difference Result 252988 states and 355512 transitions. [2022-07-12 12:30:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 12:30:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) Word has length 148 [2022-07-12 12:30:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:45,006 INFO L225 Difference]: With dead ends: 252988 [2022-07-12 12:30:45,006 INFO L226 Difference]: Without dead ends: 166692 [2022-07-12 12:30:45,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 12:30:45,206 INFO L413 NwaCegarLoop]: 2410 mSDtfsCounter, 2733 mSDsluCounter, 17325 mSDsCounter, 0 mSdLazyCounter, 12857 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 19735 SdHoareTripleChecker+Invalid, 13830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 12857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:45,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 19735 Invalid, 13830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [973 Valid, 12857 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-07-12 12:30:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166692 states. [2022-07-12 12:30:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166692 to 132402. [2022-07-12 12:30:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132402 states, 96821 states have (on average 1.2711395255161586) internal successors, (123073), 99293 states have internal predecessors, (123073), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8348 states have return successors, (30817), 26659 states have call predecessors, (30817), 27231 states have call successors, (30817) [2022-07-12 12:30:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132402 states to 132402 states and 181122 transitions. [2022-07-12 12:30:50,714 INFO L78 Accepts]: Start accepts. Automaton has 132402 states and 181122 transitions. Word has length 148 [2022-07-12 12:30:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:50,714 INFO L495 AbstractCegarLoop]: Abstraction has 132402 states and 181122 transitions. [2022-07-12 12:30:50,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2022-07-12 12:30:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 132402 states and 181122 transitions. [2022-07-12 12:30:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-12 12:30:50,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:50,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 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] [2022-07-12 12:30:50,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 12:30:50,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:50,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash 286366410, now seen corresponding path program 1 times [2022-07-12 12:30:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219867154] [2022-07-12 12:30:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:50,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:30:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:30:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:30:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:30:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:30:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:30:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 12:30:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:30:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:30:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:30:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 12:30:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 12:30:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:51,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219867154] [2022-07-12 12:30:51,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219867154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:30:51,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849308340] [2022-07-12 12:30:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:51,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:51,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:30:51,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:30:51,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 12:30:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:52,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:30:52,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:30:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 12:30:52,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:30:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-12 12:30:52,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849308340] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:30:52,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:30:52,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2022-07-12 12:30:52,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407500892] [2022-07-12 12:30:52,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:30:52,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 12:30:52,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:52,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 12:30:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-07-12 12:30:52,857 INFO L87 Difference]: Start difference. First operand 132402 states and 181122 transitions. Second operand has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2022-07-12 12:31:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:13,964 INFO L93 Difference]: Finished difference Result 343762 states and 481113 transitions. [2022-07-12 12:31:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-12 12:31:13,965 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) Word has length 165 [2022-07-12 12:31:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:15,223 INFO L225 Difference]: With dead ends: 343762 [2022-07-12 12:31:15,224 INFO L226 Difference]: Without dead ends: 210588 [2022-07-12 12:31:15,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=770, Invalid=4930, Unknown=0, NotChecked=0, Total=5700 [2022-07-12 12:31:15,639 INFO L413 NwaCegarLoop]: 2648 mSDtfsCounter, 9246 mSDsluCounter, 21412 mSDsCounter, 0 mSdLazyCounter, 18950 mSolverCounterSat, 4501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9784 SdHoareTripleChecker+Valid, 24060 SdHoareTripleChecker+Invalid, 23451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4501 IncrementalHoareTripleChecker+Valid, 18950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:15,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9784 Valid, 24060 Invalid, 23451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4501 Valid, 18950 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-07-12 12:31:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210588 states. [2022-07-12 12:31:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210588 to 132250. [2022-07-12 12:31:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132250 states, 96577 states have (on average 1.2670200979529287) internal successors, (122365), 98985 states have internal predecessors, (122365), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8440 states have return successors, (31003), 26815 states have call predecessors, (31003), 27231 states have call successors, (31003) [2022-07-12 12:31:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132250 states to 132250 states and 180600 transitions. [2022-07-12 12:31:22,047 INFO L78 Accepts]: Start accepts. Automaton has 132250 states and 180600 transitions. Word has length 165 [2022-07-12 12:31:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:22,047 INFO L495 AbstractCegarLoop]: Abstraction has 132250 states and 180600 transitions. [2022-07-12 12:31:22,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2022-07-12 12:31:22,048 INFO L276 IsEmpty]: Start isEmpty. Operand 132250 states and 180600 transitions. [2022-07-12 12:31:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-12 12:31:22,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:22,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-07-12 12:31:22,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 12:31:22,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:31:22,272 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1625373719, now seen corresponding path program 1 times [2022-07-12 12:31:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:31:22,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922160891] [2022-07-12 12:31:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:22,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:31:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:31:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:31:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:31:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 12:31:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:31:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:31:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:31:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:31:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:31:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:31:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:31:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:31:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 12:31:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:31:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 12:31:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:31:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:31:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:31:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:23,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:31:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 12:31:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-12 12:31:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:31:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922160891] [2022-07-12 12:31:23,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922160891] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:31:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542804663] [2022-07-12 12:31:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:31:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:31:23,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:31:23,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 12:31:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:23,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:31:23,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:31:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 12:31:23,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:31:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-12 12:31:23,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542804663] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:31:23,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:31:23,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 21 [2022-07-12 12:31:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264583587] [2022-07-12 12:31:23,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:31:23,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 12:31:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:31:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 12:31:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-12 12:31:23,977 INFO L87 Difference]: Start difference. First operand 132250 states and 180600 transitions. Second operand has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 15 states have internal predecessors, (211), 8 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (38), 9 states have call predecessors, (38), 7 states have call successors, (38)