./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.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 a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:59:10,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:59:10,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:59:10,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:59:10,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:59:10,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:59:10,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:59:10,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:59:10,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:59:10,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:59:10,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:59:10,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:59:10,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:59:10,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:59:10,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:59:10,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:59:10,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:59:10,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:59:10,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:59:10,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:59:10,720 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:59:10,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:59:10,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:59:10,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:59:10,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:59:10,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:59:10,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:59:10,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:59:10,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:59:10,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:59:10,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:59:10,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:59:10,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:59:10,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:59:10,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:59:10,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:59:10,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:59:10,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:59:10,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:59:10,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:59:10,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:59:10,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:59:10,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:59:10,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:59:10,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:59:10,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:59:10,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:59:10,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:59:10,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:59:10,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:59:10,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:59:10,787 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:59:10,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:59:10,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:59:10,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:59:10,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:59:10,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:59:10,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:59:10,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:59:10,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:59:10,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:59:10,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:59:10,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:59:10,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:59:10,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:59:10,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:59:10,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:59:10,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:59:10,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:59:10,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:59:10,791 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:59:10,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:59:10,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:59:10,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 [2022-07-22 23:59:11,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:59:11,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:59:11,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:59:11,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:59:11,025 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:59:11,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2022-07-22 23:59:11,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35acdff9/23616989a2d44e43b381b591efe622b5/FLAGb3e0a1200 [2022-07-22 23:59:11,862 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:59:11,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2022-07-22 23:59:11,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35acdff9/23616989a2d44e43b381b591efe622b5/FLAGb3e0a1200 [2022-07-22 23:59:12,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35acdff9/23616989a2d44e43b381b591efe622b5 [2022-07-22 23:59:12,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:59:12,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:59:12,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:59:12,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:59:12,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:59:12,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:59:12" (1/1) ... [2022-07-22 23:59:12,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626dbbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:12, skipping insertion in model container [2022-07-22 23:59:12,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:59:12" (1/1) ... [2022-07-22 23:59:12,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:59:12,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:59:12,644 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2022-07-22 23:59:12,647 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2022-07-22 23:59:13,037 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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2022-07-22 23:59:13,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:59:13,994 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:59:14,126 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2022-07-22 23:59:14,126 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2022-07-22 23:59:14,141 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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2022-07-22 23:59:14,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:59:14,536 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:59:14,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14 WrapperNode [2022-07-22 23:59:14,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:59:14,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:59:14,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:59:14,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:59:14,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:14,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:14,779 INFO L137 Inliner]: procedures = 350, calls = 2000, calls flagged for inlining = 171, calls inlined = 139, statements flattened = 4723 [2022-07-22 23:59:14,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:59:14,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:59:14,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:59:14,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:59:14,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:14,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:14,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:14,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:14,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:15,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:15,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:15,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:59:15,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:59:15,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:59:15,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:59:15,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (1/1) ... [2022-07-22 23:59:15,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:59:15,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:59:15,100 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) [2022-07-22 23:59:15,119 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 [2022-07-22 23:59:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:59:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-07-22 23:59:15,137 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-07-22 23:59:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:59:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-07-22 23:59:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-07-22 23:59:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:59:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:59:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-22 23:59:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-22 23:59:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-07-22 23:59:15,139 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-07-22 23:59:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_change_mtu [2022-07-22 23:59:15,139 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_change_mtu [2022-07-22 23:59:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-22 23:59:15,139 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-22 23:59:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-07-22 23:59:15,140 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-07-22 23:59:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-22 23:59:15,140 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-22 23:59:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-22 23:59:15,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-22 23:59:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:59:15,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:59:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-22 23:59:15,141 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-22 23:59:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-07-22 23:59:15,142 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-07-22 23:59:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-07-22 23:59:15,142 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-07-22 23:59:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-07-22 23:59:15,142 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-07-22 23:59:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_remove [2022-07-22 23:59:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_remove [2022-07-22 23:59:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:59:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:59:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-22 23:59:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-22 23:59:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:59:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:59:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-07-22 23:59:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-07-22 23:59:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-22 23:59:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-22 23:59:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:59:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:59:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-07-22 23:59:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-07-22 23:59:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:59:15,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:59:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure netif_set_real_num_tx_queues [2022-07-22 23:59:15,146 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_set_real_num_tx_queues [2022-07-22 23:59:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-07-22 23:59:15,147 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-07-22 23:59:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-07-22 23:59:15,148 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-07-22 23:59:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_stats64 [2022-07-22 23:59:15,148 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_stats64 [2022-07-22 23:59:15,148 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:59:15,149 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:59:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-07-22 23:59:15,149 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-07-22 23:59:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-22 23:59:15,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-22 23:59:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-07-22 23:59:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-07-22 23:59:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:59:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-07-22 23:59:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-07-22 23:59:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-07-22 23:59:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-07-22 23:59:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-07-22 23:59:15,151 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-07-22 23:59:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-22 23:59:15,151 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-22 23:59:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2022-07-22 23:59:15,151 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2022-07-22 23:59:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:59:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-22 23:59:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-22 23:59:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-22 23:59:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-22 23:59:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-22 23:59:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-22 23:59:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-22 23:59:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-07-22 23:59:15,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-07-22 23:59:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-07-22 23:59:15,153 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-07-22 23:59:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:59:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:59:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:59:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-22 23:59:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-22 23:59:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:59:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure write_queue_xenstore_keys [2022-07-22 23:59:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure write_queue_xenstore_keys [2022-07-22 23:59:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-07-22 23:59:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-07-22 23:59:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-22 23:59:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-22 23:59:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-07-22 23:59:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-07-22 23:59:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-07-22 23:59:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-07-22 23:59:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-07-22 23:59:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-07-22 23:59:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-22 23:59:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-22 23:59:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-22 23:59:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-22 23:59:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-22 23:59:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-22 23:59:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-07-22 23:59:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-07-22 23:59:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-07-22 23:59:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-07-22 23:59:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:59:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:59:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:59:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-22 23:59:15,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-22 23:59:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-07-22 23:59:15,164 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-07-22 23:59:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-07-22 23:59:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-07-22 23:59:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:59:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:59:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:59:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:59:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:59:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-07-22 23:59:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-07-22 23:59:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-07-22 23:59:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-07-22 23:59:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure netback_changed [2022-07-22 23:59:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_changed [2022-07-22 23:59:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2022-07-22 23:59:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2022-07-22 23:59:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-07-22 23:59:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-07-22 23:59:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:59:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-22 23:59:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-22 23:59:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-22 23:59:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-22 23:59:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-07-22 23:59:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-07-22 23:59:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:59:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:59:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_select_queue [2022-07-22 23:59:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_select_queue [2022-07-22 23:59:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-07-22 23:59:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-07-22 23:59:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2022-07-22 23:59:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2022-07-22 23:59:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:59:15,175 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:59:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-22 23:59:15,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-22 23:59:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-07-22 23:59:15,175 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-07-22 23:59:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:59:15,175 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:59:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-22 23:59:15,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-22 23:59:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-07-22 23:59:15,176 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-07-22 23:59:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:59:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-22 23:59:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-22 23:59:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-22 23:59:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-22 23:59:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:59:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:59:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2022-07-22 23:59:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2022-07-22 23:59:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-07-22 23:59:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-07-22 23:59:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_fix_features [2022-07-22 23:59:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_fix_features [2022-07-22 23:59:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:59:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-22 23:59:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-22 23:59:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:59:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-22 23:59:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-22 23:59:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-07-22 23:59:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-07-22 23:59:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:59:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-22 23:59:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-22 23:59:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-07-22 23:59:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-07-22 23:59:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-22 23:59:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-22 23:59:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-07-22 23:59:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-07-22 23:59:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-07-22 23:59:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-07-22 23:59:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-07-22 23:59:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-07-22 23:59:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-22 23:59:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-22 23:59:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-07-22 23:59:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-07-22 23:59:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-07-22 23:59:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-07-22 23:59:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-22 23:59:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-22 23:59:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_set_features [2022-07-22 23:59:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_set_features [2022-07-22 23:59:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-07-22 23:59:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-07-22 23:59:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:59:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:59:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:59:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-22 23:59:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-22 23:59:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-22 23:59:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-22 23:59:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-07-22 23:59:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-07-22 23:59:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-07-22 23:59:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-07-22 23:59:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:59:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:59:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-07-22 23:59:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-07-22 23:59:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-22 23:59:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-22 23:59:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:59:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:59:15,837 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:59:15,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:59:16,671 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:59:21,783 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:59:21,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:59:21,797 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:59:21,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:59:21 BoogieIcfgContainer [2022-07-22 23:59:21,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:59:21,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:59:21,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:59:21,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:59:21,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:59:12" (1/3) ... [2022-07-22 23:59:21,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7530c06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:59:21, skipping insertion in model container [2022-07-22 23:59:21,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:59:14" (2/3) ... [2022-07-22 23:59:21,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7530c06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:59:21, skipping insertion in model container [2022-07-22 23:59:21,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:59:21" (3/3) ... [2022-07-22 23:59:21,810 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2022-07-22 23:59:21,821 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:59:21,823 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:59:21,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:59:21,930 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@53eb1e05, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3fab8ba7 [2022-07-22 23:59:21,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:59:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 1624 states, 1148 states have (on average 1.318815331010453) internal successors, (1514), 1178 states have internal predecessors, (1514), 367 states have call successors, (367), 108 states have call predecessors, (367), 107 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2022-07-22 23:59:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 23:59:21,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:59:21,974 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2022-07-22 23:59:21,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:59:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:59:21,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1904983006, now seen corresponding path program 1 times [2022-07-22 23:59:21,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:59:21,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368323763] [2022-07-22 23:59:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:59:21,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:59:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:59:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:59:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:59:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:59:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:59:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:59:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:59:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:59:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:59:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:59:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:59:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:59:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:59:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:59:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 23:59:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:59:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:59:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:59:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 23:59:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:59:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:59:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:59:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 23:59:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 23:59:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-22 23:59:22,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:59:22,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368323763] [2022-07-22 23:59:22,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368323763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:59:22,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:59:22,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:59:22,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567947605] [2022-07-22 23:59:22,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:59:22,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:59:22,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:59:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:59:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:59:22,902 INFO L87 Difference]: Start difference. First operand has 1624 states, 1148 states have (on average 1.318815331010453) internal successors, (1514), 1178 states have internal predecessors, (1514), 367 states have call successors, (367), 108 states have call predecessors, (367), 107 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:59:29,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:59:31,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:59:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:59:34,768 INFO L93 Difference]: Finished difference Result 4638 states and 6504 transitions. [2022-07-22 23:59:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:59:34,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 162 [2022-07-22 23:59:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:59:34,805 INFO L225 Difference]: With dead ends: 4638 [2022-07-22 23:59:34,805 INFO L226 Difference]: Without dead ends: 2971 [2022-07-22 23:59:34,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:59:34,827 INFO L413 NwaCegarLoop]: 2202 mSDtfsCounter, 3985 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 2792 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4210 SdHoareTripleChecker+Valid, 5418 SdHoareTripleChecker+Invalid, 6836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2792 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:59:34,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4210 Valid, 5418 Invalid, 6836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2792 Valid, 4042 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-07-22 23:59:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-07-22 23:59:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2587. [2022-07-22 23:59:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2587 states, 1825 states have (on average 1.2772602739726027) internal successors, (2331), 1867 states have internal predecessors, (2331), 569 states have call successors, (569), 193 states have call predecessors, (569), 192 states have return successors, (571), 559 states have call predecessors, (571), 568 states have call successors, (571) [2022-07-22 23:59:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3471 transitions. [2022-07-22 23:59:35,061 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3471 transitions. Word has length 162 [2022-07-22 23:59:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:59:35,062 INFO L495 AbstractCegarLoop]: Abstraction has 2587 states and 3471 transitions. [2022-07-22 23:59:35,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:59:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3471 transitions. [2022-07-22 23:59:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 23:59:35,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:59:35,073 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:59:35,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:59:35,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:59:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:59:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash 841610551, now seen corresponding path program 1 times [2022-07-22 23:59:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:59:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021449836] [2022-07-22 23:59:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:59:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:59:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:59:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:59:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:59:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:59:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:59:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:59:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:59:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:59:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:59:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:59:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:59:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:59:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:59:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:59:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 23:59:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 23:59:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:59:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:59:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 23:59:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-22 23:59:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:59:35,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021449836] [2022-07-22 23:59:35,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021449836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:59:35,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:59:35,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:59:35,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055685292] [2022-07-22 23:59:35,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:59:35,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:59:35,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:59:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:59:35,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:59:35,500 INFO L87 Difference]: Start difference. First operand 2587 states and 3471 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:59:42,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:59:46,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:59:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:59:48,212 INFO L93 Difference]: Finished difference Result 6886 states and 9375 transitions. [2022-07-22 23:59:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:59:48,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2022-07-22 23:59:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:59:48,246 INFO L225 Difference]: With dead ends: 6886 [2022-07-22 23:59:48,246 INFO L226 Difference]: Without dead ends: 4326 [2022-07-22 23:59:48,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:59:48,262 INFO L413 NwaCegarLoop]: 3027 mSDtfsCounter, 2485 mSDsluCounter, 4958 mSDsCounter, 0 mSdLazyCounter, 3978 mSolverCounterSat, 1443 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2727 SdHoareTripleChecker+Valid, 7985 SdHoareTripleChecker+Invalid, 5423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1443 IncrementalHoareTripleChecker+Valid, 3978 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:59:48,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2727 Valid, 7985 Invalid, 5423 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1443 Valid, 3978 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-07-22 23:59:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2022-07-22 23:59:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3847. [2022-07-22 23:59:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 2740 states have (on average 1.2824817518248175) internal successors, (3514), 2803 states have internal predecessors, (3514), 827 states have call successors, (827), 273 states have call predecessors, (827), 279 states have return successors, (865), 818 states have call predecessors, (865), 826 states have call successors, (865) [2022-07-22 23:59:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 5206 transitions. [2022-07-22 23:59:48,514 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 5206 transitions. Word has length 156 [2022-07-22 23:59:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:59:48,515 INFO L495 AbstractCegarLoop]: Abstraction has 3847 states and 5206 transitions. [2022-07-22 23:59:48,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:59:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 5206 transitions. [2022-07-22 23:59:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-22 23:59:48,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:59:48,522 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:59:48,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:59:48,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:59:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:59:48,523 INFO L85 PathProgramCache]: Analyzing trace with hash 749269392, now seen corresponding path program 1 times [2022-07-22 23:59:48,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:59:48,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410240913] [2022-07-22 23:59:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:59:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:59:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:59:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:59:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:59:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:59:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:59:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:59:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:59:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:59:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:59:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:59:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:59:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:59:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:59:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:59:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 23:59:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 23:59:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 23:59:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 23:59:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 23:59:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:59:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 23:59:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:59:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-07-22 23:59:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:59:49,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410240913] [2022-07-22 23:59:49,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410240913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:59:49,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:59:49,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:59:49,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768588275] [2022-07-22 23:59:49,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:59:49,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:59:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:59:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:59:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:59:49,022 INFO L87 Difference]: Start difference. First operand 3847 states and 5206 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:59:54,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:59:56,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:59:58,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:00,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:03,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:05,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:07,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:00:08,910 INFO L93 Difference]: Finished difference Result 8152 states and 11129 transitions. [2022-07-23 00:00:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 00:00:08,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2022-07-23 00:00:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:00:08,947 INFO L225 Difference]: With dead ends: 8152 [2022-07-23 00:00:08,947 INFO L226 Difference]: Without dead ends: 4349 [2022-07-23 00:00:09,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:00:09,013 INFO L413 NwaCegarLoop]: 2009 mSDtfsCounter, 1449 mSDsluCounter, 4360 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 1431 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 6369 SdHoareTripleChecker+Invalid, 4798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1431 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-07-23 00:00:09,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 6369 Invalid, 4798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1431 Valid, 3360 Invalid, 7 Unknown, 0 Unchecked, 19.6s Time] [2022-07-23 00:00:09,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2022-07-23 00:00:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 3851. [2022-07-23 00:00:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 2743 states have (on average 1.2796208530805686) internal successors, (3510), 2806 states have internal predecessors, (3510), 828 states have call successors, (828), 273 states have call predecessors, (828), 279 states have return successors, (866), 819 states have call predecessors, (866), 827 states have call successors, (866) [2022-07-23 00:00:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5204 transitions. [2022-07-23 00:00:09,446 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5204 transitions. Word has length 182 [2022-07-23 00:00:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:00:09,446 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5204 transitions. [2022-07-23 00:00:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-23 00:00:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5204 transitions. [2022-07-23 00:00:09,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-23 00:00:09,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:00:09,452 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:00:09,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 00:00:09,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:00:09,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:00:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1252714224, now seen corresponding path program 1 times [2022-07-23 00:00:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:00:09,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955510420] [2022-07-23 00:00:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:00:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:00:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:00:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:00:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:00:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:00:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:00:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:00:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:00:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:00:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:00:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:00:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-23 00:00:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-23 00:00:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-23 00:00:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-23 00:00:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-23 00:00:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 00:00:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-23 00:00:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-23 00:00:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-23 00:00:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:00:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-23 00:00:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-23 00:00:10,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:00:10,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955510420] [2022-07-23 00:00:10,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955510420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:00:10,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:00:10,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:00:10,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851818221] [2022-07-23 00:00:10,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:00:10,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:00:10,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:00:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:00:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:00:10,560 INFO L87 Difference]: Start difference. First operand 3851 states and 5204 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-23 00:00:16,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:20,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:22,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:24,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:00:26,432 INFO L93 Difference]: Finished difference Result 7448 states and 10225 transitions. [2022-07-23 00:00:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 00:00:26,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 187 [2022-07-23 00:00:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:00:26,512 INFO L225 Difference]: With dead ends: 7448 [2022-07-23 00:00:26,512 INFO L226 Difference]: Without dead ends: 7445 [2022-07-23 00:00:26,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-23 00:00:26,517 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 3206 mSDsluCounter, 4047 mSDsCounter, 0 mSdLazyCounter, 3703 mSolverCounterSat, 1903 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 6400 SdHoareTripleChecker+Invalid, 5610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1903 IncrementalHoareTripleChecker+Valid, 3703 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-07-23 00:00:26,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3443 Valid, 6400 Invalid, 5610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1903 Valid, 3703 Invalid, 4 Unknown, 0 Unchecked, 15.4s Time] [2022-07-23 00:00:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states. [2022-07-23 00:00:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 6607. [2022-07-23 00:00:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6607 states, 4767 states have (on average 1.2905391231382422) internal successors, (6152), 4880 states have internal predecessors, (6152), 1347 states have call successors, (1347), 480 states have call predecessors, (1347), 492 states have return successors, (1441), 1325 states have call predecessors, (1441), 1346 states have call successors, (1441) [2022-07-23 00:00:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 8940 transitions. [2022-07-23 00:00:27,045 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 8940 transitions. Word has length 187 [2022-07-23 00:00:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:00:27,045 INFO L495 AbstractCegarLoop]: Abstraction has 6607 states and 8940 transitions. [2022-07-23 00:00:27,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-23 00:00:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 8940 transitions. [2022-07-23 00:00:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-23 00:00:27,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:00:27,061 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:00:27,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 00:00:27,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:00:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:00:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash -898207309, now seen corresponding path program 1 times [2022-07-23 00:00:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:00:27,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070822941] [2022-07-23 00:00:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:00:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:00:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:00:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:00:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:00:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:00:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:00:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:00:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:00:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:00:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:00:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:00:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-23 00:00:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-23 00:00:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-23 00:00:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-23 00:00:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-23 00:00:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 00:00:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-23 00:00:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:00:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-23 00:00:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-23 00:00:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-23 00:00:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-23 00:00:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-23 00:00:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-23 00:00:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-23 00:00:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-23 00:00:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:00:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-23 00:00:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:00:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-23 00:00:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:00:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-23 00:00:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-23 00:00:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:00:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-23 00:00:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:00:27,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070822941] [2022-07-23 00:00:27,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070822941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:00:27,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:00:27,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:00:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105631267] [2022-07-23 00:00:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:00:27,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:00:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:00:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:00:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:00:27,861 INFO L87 Difference]: Start difference. First operand 6607 states and 8940 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 00:00:35,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:37,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:41,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:43,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:45,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:48,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:50,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:53,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:55,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:57,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:00:59,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:01:01,141 INFO L93 Difference]: Finished difference Result 17378 states and 23777 transitions. [2022-07-23 00:01:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:01:01,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 254 [2022-07-23 00:01:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:01:01,363 INFO L225 Difference]: With dead ends: 17378 [2022-07-23 00:01:01,364 INFO L226 Difference]: Without dead ends: 10823 [2022-07-23 00:01:01,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-07-23 00:01:01,385 INFO L413 NwaCegarLoop]: 2893 mSDtfsCounter, 3662 mSDsluCounter, 5157 mSDsCounter, 0 mSdLazyCounter, 5617 mSolverCounterSat, 2728 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3863 SdHoareTripleChecker+Valid, 8050 SdHoareTripleChecker+Invalid, 8356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2728 IncrementalHoareTripleChecker+Valid, 5617 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2022-07-23 00:01:01,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3863 Valid, 8050 Invalid, 8356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2728 Valid, 5617 Invalid, 11 Unknown, 0 Unchecked, 32.6s Time] [2022-07-23 00:01:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10823 states. [2022-07-23 00:01:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10823 to 9429. [2022-07-23 00:01:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9429 states, 6903 states have (on average 1.2900188323917137) internal successors, (8905), 7059 states have internal predecessors, (8905), 1811 states have call successors, (1811), 694 states have call predecessors, (1811), 714 states have return successors, (1945), 1780 states have call predecessors, (1945), 1810 states have call successors, (1945) [2022-07-23 00:01:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9429 states to 9429 states and 12661 transitions. [2022-07-23 00:01:02,102 INFO L78 Accepts]: Start accepts. Automaton has 9429 states and 12661 transitions. Word has length 254 [2022-07-23 00:01:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:01:02,103 INFO L495 AbstractCegarLoop]: Abstraction has 9429 states and 12661 transitions. [2022-07-23 00:01:02,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 00:01:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9429 states and 12661 transitions. [2022-07-23 00:01:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-23 00:01:02,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:01:02,126 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:01:02,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 00:01:02,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:01:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:01:02,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2121719809, now seen corresponding path program 1 times [2022-07-23 00:01:02,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:01:02,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470724914] [2022-07-23 00:01:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:02,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:01:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:01:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:01:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:01:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:01:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:01:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:01:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:01:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:01:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:01:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:01:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-23 00:01:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-23 00:01:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-23 00:01:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-23 00:01:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-23 00:01:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 00:01:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-23 00:01:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-23 00:01:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-23 00:01:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-23 00:01:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-23 00:01:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-23 00:01:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-23 00:01:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-23 00:01:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-23 00:01:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-23 00:01:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-23 00:01:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-23 00:01:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-23 00:01:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-23 00:01:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:01:02,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470724914] [2022-07-23 00:01:02,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470724914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:01:02,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:01:02,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:01:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670636043] [2022-07-23 00:01:02,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:01:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:01:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:01:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:01:02,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:01:02,736 INFO L87 Difference]: Start difference. First operand 9429 states and 12661 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 00:01:08,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:11,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:13,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:15,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:18,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:01:19,195 INFO L93 Difference]: Finished difference Result 20140 states and 27314 transitions. [2022-07-23 00:01:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 00:01:19,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 273 [2022-07-23 00:01:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:01:19,234 INFO L225 Difference]: With dead ends: 20140 [2022-07-23 00:01:19,234 INFO L226 Difference]: Without dead ends: 10763 [2022-07-23 00:01:19,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-23 00:01:19,266 INFO L413 NwaCegarLoop]: 1910 mSDtfsCounter, 2380 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 3287 mSolverCounterSat, 2094 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 5172 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2094 IncrementalHoareTripleChecker+Valid, 3287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:01:19,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2511 Valid, 5172 Invalid, 5386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2094 Valid, 3287 Invalid, 5 Unknown, 0 Unchecked, 15.9s Time] [2022-07-23 00:01:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2022-07-23 00:01:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 9431. [2022-07-23 00:01:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9431 states, 6905 states have (on average 1.289934829833454) internal successors, (8907), 7061 states have internal predecessors, (8907), 1811 states have call successors, (1811), 694 states have call predecessors, (1811), 714 states have return successors, (1945), 1780 states have call predecessors, (1945), 1810 states have call successors, (1945) [2022-07-23 00:01:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9431 states to 9431 states and 12663 transitions. [2022-07-23 00:01:19,676 INFO L78 Accepts]: Start accepts. Automaton has 9431 states and 12663 transitions. Word has length 273 [2022-07-23 00:01:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:01:19,676 INFO L495 AbstractCegarLoop]: Abstraction has 9431 states and 12663 transitions. [2022-07-23 00:01:19,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 00:01:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 9431 states and 12663 transitions. [2022-07-23 00:01:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-23 00:01:19,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:01:19,694 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:01:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 00:01:19,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:01:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:01:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash -782873689, now seen corresponding path program 1 times [2022-07-23 00:01:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:01:19,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109807243] [2022-07-23 00:01:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:01:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:01:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:01:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:01:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:01:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:01:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:01:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:01:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:01:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:01:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:01:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-23 00:01:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-23 00:01:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-23 00:01:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-23 00:01:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-23 00:01:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 00:01:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-23 00:01:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-23 00:01:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-23 00:01:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-23 00:01:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-23 00:01:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-23 00:01:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-23 00:01:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-23 00:01:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-23 00:01:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-23 00:01:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-23 00:01:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-23 00:01:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-23 00:01:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-23 00:01:20,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:01:20,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109807243] [2022-07-23 00:01:20,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109807243] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:01:20,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336394815] [2022-07-23 00:01:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:20,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:01:20,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:01:20,551 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) [2022-07-23 00:01:20,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 00:01:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:21,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 00:01:21,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:01:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-23 00:01:22,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:01:22,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336394815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:01:22,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:01:22,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-23 00:01:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954212855] [2022-07-23 00:01:22,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:01:22,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 00:01:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:01:22,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 00:01:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-23 00:01:22,037 INFO L87 Difference]: Start difference. First operand 9431 states and 12663 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 00:01:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:01:22,767 INFO L93 Difference]: Finished difference Result 18840 states and 25362 transitions. [2022-07-23 00:01:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 00:01:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 277 [2022-07-23 00:01:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:01:22,861 INFO L225 Difference]: With dead ends: 18840 [2022-07-23 00:01:22,861 INFO L226 Difference]: Without dead ends: 9438 [2022-07-23 00:01:22,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-23 00:01:22,929 INFO L413 NwaCegarLoop]: 2166 mSDtfsCounter, 2 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6492 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:01:22,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6492 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 00:01:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2022-07-23 00:01:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 9438. [2022-07-23 00:01:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9438 states, 6912 states have (on average 1.2896412037037037) internal successors, (8914), 7068 states have internal predecessors, (8914), 1811 states have call successors, (1811), 694 states have call predecessors, (1811), 714 states have return successors, (1945), 1780 states have call predecessors, (1945), 1810 states have call successors, (1945) [2022-07-23 00:01:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9438 states to 9438 states and 12670 transitions. [2022-07-23 00:01:23,872 INFO L78 Accepts]: Start accepts. Automaton has 9438 states and 12670 transitions. Word has length 277 [2022-07-23 00:01:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:01:23,872 INFO L495 AbstractCegarLoop]: Abstraction has 9438 states and 12670 transitions. [2022-07-23 00:01:23,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 00:01:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 9438 states and 12670 transitions. [2022-07-23 00:01:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-23 00:01:23,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:01:23,892 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:01:23,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 00:01:24,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:01:24,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:01:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:01:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1420546353, now seen corresponding path program 1 times [2022-07-23 00:01:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:01:24,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98953072] [2022-07-23 00:01:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:24,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:01:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:01:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:01:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:01:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:01:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:01:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:01:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:01:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:01:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:01:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:01:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-23 00:01:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-23 00:01:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-23 00:01:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 00:01:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-23 00:01:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-23 00:01:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-23 00:01:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-23 00:01:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-23 00:01:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-23 00:01:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-23 00:01:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-23 00:01:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-23 00:01:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-23 00:01:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-23 00:01:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-23 00:01:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-23 00:01:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-23 00:01:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-23 00:01:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-23 00:01:25,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:01:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98953072] [2022-07-23 00:01:25,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98953072] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:01:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310404138] [2022-07-23 00:01:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:25,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:01:25,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:01:25,179 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) [2022-07-23 00:01:25,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 00:01:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:26,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 00:01:26,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:01:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-23 00:01:26,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:01:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-07-23 00:01:27,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310404138] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 00:01:27,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 00:01:27,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-07-23 00:01:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269638134] [2022-07-23 00:01:27,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 00:01:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 00:01:27,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:01:27,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 00:01:27,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-23 00:01:27,031 INFO L87 Difference]: Start difference. First operand 9438 states and 12670 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 10 states have internal predecessors, (246), 2 states have call successors, (79), 6 states have call predecessors, (79), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-07-23 00:01:36,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:38,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:42,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:44,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:01:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:01:46,229 INFO L93 Difference]: Finished difference Result 20183 states and 27420 transitions. [2022-07-23 00:01:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 00:01:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 10 states have internal predecessors, (246), 2 states have call successors, (79), 6 states have call predecessors, (79), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 280 [2022-07-23 00:01:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:01:46,378 INFO L225 Difference]: With dead ends: 20183 [2022-07-23 00:01:46,378 INFO L226 Difference]: Without dead ends: 10774 [2022-07-23 00:01:46,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2022-07-23 00:01:46,414 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 2002 mSDsluCounter, 6190 mSDsCounter, 0 mSdLazyCounter, 6148 mSolverCounterSat, 1662 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1662 IncrementalHoareTripleChecker+Valid, 6148 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:01:46,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 8096 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1662 Valid, 6148 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2022-07-23 00:01:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2022-07-23 00:01:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 9461. [2022-07-23 00:01:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9461 states, 6934 states have (on average 1.2894433227574271) internal successors, (8941), 7090 states have internal predecessors, (8941), 1811 states have call successors, (1811), 695 states have call predecessors, (1811), 715 states have return successors, (1945), 1780 states have call predecessors, (1945), 1810 states have call successors, (1945) [2022-07-23 00:01:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9461 states to 9461 states and 12697 transitions. [2022-07-23 00:01:47,464 INFO L78 Accepts]: Start accepts. Automaton has 9461 states and 12697 transitions. Word has length 280 [2022-07-23 00:01:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:01:47,464 INFO L495 AbstractCegarLoop]: Abstraction has 9461 states and 12697 transitions. [2022-07-23 00:01:47,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 10 states have internal predecessors, (246), 2 states have call successors, (79), 6 states have call predecessors, (79), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-07-23 00:01:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 9461 states and 12697 transitions. [2022-07-23 00:01:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-23 00:01:47,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:01:47,511 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:01:47,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 00:01:47,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-23 00:01:47,732 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:01:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:01:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash 295763262, now seen corresponding path program 1 times [2022-07-23 00:01:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:01:47,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373234314] [2022-07-23 00:01:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:01:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:01:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:01:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:01:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:01:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:01:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:01:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:01:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:01:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:01:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:01:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 00:01:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:01:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 00:01:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-23 00:01:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-23 00:01:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 00:01:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-23 00:01:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-23 00:01:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-23 00:01:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-23 00:01:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-23 00:01:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-23 00:01:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-23 00:01:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-23 00:01:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-23 00:01:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-23 00:01:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-23 00:01:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-23 00:01:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-23 00:01:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-07-23 00:01:49,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:01:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373234314] [2022-07-23 00:01:49,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373234314] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:01:49,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785989601] [2022-07-23 00:01:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:49,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:01:49,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:01:49,041 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) [2022-07-23 00:01:49,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 00:01:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:50,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 3142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 00:01:50,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:01:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-23 00:01:50,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:01:50,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785989601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:01:50,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:01:50,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-07-23 00:01:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122829503] [2022-07-23 00:01:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:01:50,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 00:01:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:01:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 00:01:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-07-23 00:01:50,471 INFO L87 Difference]: Start difference. First operand 9461 states and 12697 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 00:01:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:01:51,193 INFO L93 Difference]: Finished difference Result 20038 states and 27147 transitions. [2022-07-23 00:01:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 00:01:51,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 288 [2022-07-23 00:01:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:01:51,308 INFO L225 Difference]: With dead ends: 20038 [2022-07-23 00:01:51,316 INFO L226 Difference]: Without dead ends: 10639 [2022-07-23 00:01:51,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-07-23 00:01:51,385 INFO L413 NwaCegarLoop]: 2590 mSDtfsCounter, 793 mSDsluCounter, 7118 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 9708 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:01:51,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 9708 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 00:01:51,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10639 states. [2022-07-23 00:01:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10639 to 9465. [2022-07-23 00:01:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9465 states, 6938 states have (on average 1.2892764485442492) internal successors, (8945), 7094 states have internal predecessors, (8945), 1811 states have call successors, (1811), 695 states have call predecessors, (1811), 715 states have return successors, (1945), 1780 states have call predecessors, (1945), 1810 states have call successors, (1945) [2022-07-23 00:01:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 12701 transitions. [2022-07-23 00:01:52,009 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 12701 transitions. Word has length 288 [2022-07-23 00:01:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:01:52,011 INFO L495 AbstractCegarLoop]: Abstraction has 9465 states and 12701 transitions. [2022-07-23 00:01:52,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 00:01:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 12701 transitions. [2022-07-23 00:01:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-23 00:01:52,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:01:52,044 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:01:52,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 00:01:52,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:01:52,249 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:01:52,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:01:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1877006029, now seen corresponding path program 2 times [2022-07-23 00:01:52,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:01:52,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450652081] [2022-07-23 00:01:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:01:52,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:01:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:01:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:01:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:01:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:01:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:01:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:01:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:01:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:01:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:01:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:01:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 00:01:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:01:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-23 00:01:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-23 00:01:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-23 00:01:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 00:01:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-23 00:01:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-23 00:01:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-23 00:01:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-23 00:01:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-23 00:01:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-23 00:01:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-23 00:01:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-23 00:01:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-23 00:01:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-23 00:01:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:53,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-23 00:01:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:01:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:53,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-23 00:01:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:53,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-23 00:01:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:01:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-07-23 00:01:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:01:53,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450652081] [2022-07-23 00:01:53,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450652081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:01:53,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241919648] [2022-07-23 00:01:53,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 00:01:53,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:01:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:01:53,065 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) [2022-07-23 00:01:53,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 00:01:54,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 00:01:54,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 00:01:54,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-23 00:01:54,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:01:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 127 proven. 50 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-23 00:01:55,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:01:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-23 00:01:55,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241919648] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 00:01:55,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 00:01:55,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 19 [2022-07-23 00:01:55,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857766054] [2022-07-23 00:01:55,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 00:01:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 00:01:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:01:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 00:01:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-07-23 00:01:55,641 INFO L87 Difference]: Start difference. First operand 9465 states and 12701 transitions. Second operand has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 15 states have internal predecessors, (249), 2 states have call successors, (77), 6 states have call predecessors, (77), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-07-23 00:02:07,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:02:11,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:02:14,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:02:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:02:16,074 INFO L93 Difference]: Finished difference Result 20262 states and 27528 transitions. [2022-07-23 00:02:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-23 00:02:16,076 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 15 states have internal predecessors, (249), 2 states have call successors, (77), 6 states have call predecessors, (77), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 291 [2022-07-23 00:02:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:02:16,121 INFO L225 Difference]: With dead ends: 20262 [2022-07-23 00:02:16,121 INFO L226 Difference]: Without dead ends: 10839 [2022-07-23 00:02:16,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2022-07-23 00:02:16,153 INFO L413 NwaCegarLoop]: 1909 mSDtfsCounter, 2455 mSDsluCounter, 9920 mSDsCounter, 0 mSdLazyCounter, 10266 mSolverCounterSat, 2146 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2590 SdHoareTripleChecker+Valid, 11829 SdHoareTripleChecker+Invalid, 12415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2146 IncrementalHoareTripleChecker+Valid, 10266 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:02:16,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2590 Valid, 11829 Invalid, 12415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2146 Valid, 10266 Invalid, 3 Unknown, 0 Unchecked, 19.3s Time] [2022-07-23 00:02:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2022-07-23 00:02:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 9485. [2022-07-23 00:02:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9485 states, 6958 states have (on average 1.2883012359873527) internal successors, (8964), 7114 states have internal predecessors, (8964), 1811 states have call successors, (1811), 695 states have call predecessors, (1811), 715 states have return successors, (1945), 1780 states have call predecessors, (1945), 1810 states have call successors, (1945) [2022-07-23 00:02:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9485 states to 9485 states and 12720 transitions. [2022-07-23 00:02:16,562 INFO L78 Accepts]: Start accepts. Automaton has 9485 states and 12720 transitions. Word has length 291 [2022-07-23 00:02:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:02:16,565 INFO L495 AbstractCegarLoop]: Abstraction has 9485 states and 12720 transitions. [2022-07-23 00:02:16,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 15 states have internal predecessors, (249), 2 states have call successors, (77), 6 states have call predecessors, (77), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-07-23 00:02:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 9485 states and 12720 transitions. [2022-07-23 00:02:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-23 00:02:16,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:02:16,580 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:02:16,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 00:02:16,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:02:16,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:02:16,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:02:16,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2131457523, now seen corresponding path program 3 times [2022-07-23 00:02:16,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:02:16,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776145996] [2022-07-23 00:02:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:02:16,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:02:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:02:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:02:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:02:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:02:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:02:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:02:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:02:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:02:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:02:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:02:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 00:02:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:02:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-23 00:02:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-23 00:02:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-23 00:02:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-23 00:02:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-23 00:02:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-23 00:02:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-23 00:02:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-23 00:02:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-23 00:02:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-23 00:02:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-23 00:02:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-23 00:02:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-23 00:02:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-23 00:02:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-23 00:02:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-23 00:02:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-23 00:02:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-23 00:02:17,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:02:17,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776145996] [2022-07-23 00:02:17,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776145996] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:02:17,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318436] [2022-07-23 00:02:17,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 00:02:17,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:02:17,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:02:17,561 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) [2022-07-23 00:02:17,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 00:02:19,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-23 00:02:19,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 00:02:19,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-23 00:02:19,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:02:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-07-23 00:02:19,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:02:19,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:02:19,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:02:19,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 20 [2022-07-23 00:02:19,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662672692] [2022-07-23 00:02:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:02:19,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 00:02:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:02:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 00:02:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-23 00:02:19,752 INFO L87 Difference]: Start difference. First operand 9485 states and 12720 transitions. Second operand has 12 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-23 00:02:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:02:21,681 INFO L93 Difference]: Finished difference Result 21264 states and 29039 transitions. [2022-07-23 00:02:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 00:02:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) Word has length 297 [2022-07-23 00:02:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:02:21,811 INFO L225 Difference]: With dead ends: 21264 [2022-07-23 00:02:21,811 INFO L226 Difference]: Without dead ends: 11843 [2022-07-23 00:02:21,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 351 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-07-23 00:02:21,880 INFO L413 NwaCegarLoop]: 2853 mSDtfsCounter, 1475 mSDsluCounter, 26610 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 29463 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-23 00:02:21,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 29463 Invalid, 1177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-23 00:02:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2022-07-23 00:02:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 9509. [2022-07-23 00:02:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 6976 states have (on average 1.2875573394495412) internal successors, (8982), 7132 states have internal predecessors, (8982), 1817 states have call successors, (1817), 695 states have call predecessors, (1817), 715 states have return successors, (1951), 1786 states have call predecessors, (1951), 1816 states have call successors, (1951) [2022-07-23 00:02:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 12750 transitions. [2022-07-23 00:02:22,927 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 12750 transitions. Word has length 297 [2022-07-23 00:02:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:02:22,928 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 12750 transitions. [2022-07-23 00:02:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-23 00:02:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 12750 transitions. [2022-07-23 00:02:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-07-23 00:02:22,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:02:22,959 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:02:22,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 00:02:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-23 00:02:23,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:02:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:02:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 635190731, now seen corresponding path program 1 times [2022-07-23 00:02:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:02:23,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596526989] [2022-07-23 00:02:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:02:23,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:02:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:02:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:02:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:02:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:02:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:02:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:02:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:02:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:02:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:02:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:02:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 00:02:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:02:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-23 00:02:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-23 00:02:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-23 00:02:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-23 00:02:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-23 00:02:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-23 00:02:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-23 00:02:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-23 00:02:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-23 00:02:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-23 00:02:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-23 00:02:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-23 00:02:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-07-23 00:02:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-23 00:02:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-23 00:02:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:02:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 00:02:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-23 00:02:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 00:02:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-23 00:02:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-23 00:02:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-07-23 00:02:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-23 00:02:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:02:24,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596526989] [2022-07-23 00:02:24,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596526989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:02:24,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:02:24,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:02:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538044027] [2022-07-23 00:02:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:02:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:02:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:02:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:02:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:02:24,161 INFO L87 Difference]: Start difference. First operand 9509 states and 12750 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-23 00:02:31,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:02:34,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:02:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:02:38,633 INFO L93 Difference]: Finished difference Result 27571 states and 37352 transitions. [2022-07-23 00:02:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:02:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 323 [2022-07-23 00:02:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:02:38,813 INFO L225 Difference]: With dead ends: 27571 [2022-07-23 00:02:38,827 INFO L226 Difference]: Without dead ends: 18126 [2022-07-23 00:02:38,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-07-23 00:02:38,888 INFO L413 NwaCegarLoop]: 2778 mSDtfsCounter, 5307 mSDsluCounter, 4146 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 3975 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5615 SdHoareTripleChecker+Valid, 6924 SdHoareTripleChecker+Invalid, 8755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3975 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:02:38,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5615 Valid, 6924 Invalid, 8755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3975 Valid, 4778 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2022-07-23 00:02:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18126 states. [2022-07-23 00:02:40,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18126 to 15906. [2022-07-23 00:02:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15906 states, 11640 states have (on average 1.284106529209622) internal successors, (14947), 11899 states have internal predecessors, (14947), 3043 states have call successors, (3043), 1179 states have call predecessors, (3043), 1222 states have return successors, (3251), 3011 states have call predecessors, (3251), 3042 states have call successors, (3251) [2022-07-23 00:02:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15906 states to 15906 states and 21241 transitions. [2022-07-23 00:02:40,529 INFO L78 Accepts]: Start accepts. Automaton has 15906 states and 21241 transitions. Word has length 323 [2022-07-23 00:02:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:02:40,530 INFO L495 AbstractCegarLoop]: Abstraction has 15906 states and 21241 transitions. [2022-07-23 00:02:40,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-23 00:02:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 15906 states and 21241 transitions. [2022-07-23 00:02:40,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-23 00:02:40,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:02:40,554 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:02:40,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-23 00:02:40,555 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:02:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:02:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1786146388, now seen corresponding path program 1 times [2022-07-23 00:02:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:02:40,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580329410] [2022-07-23 00:02:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:02:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:02:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:02:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:02:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:02:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:02:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:02:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:02:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:02:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:02:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:02:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:02:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 00:02:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:02:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-23 00:02:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-23 00:02:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-23 00:02:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-23 00:02:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-23 00:02:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-23 00:02:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-23 00:02:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-23 00:02:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-23 00:02:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-23 00:02:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-23 00:02:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-23 00:02:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-23 00:02:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-23 00:02:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-23 00:02:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-23 00:02:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-23 00:02:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-23 00:02:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:02:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-07-23 00:02:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-23 00:02:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-23 00:02:41,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:02:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580329410] [2022-07-23 00:02:41,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580329410] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:02:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956769186] [2022-07-23 00:02:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:02:41,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:02:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:02:41,435 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) [2022-07-23 00:02:41,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 00:02:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:02:43,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 00:02:43,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:02:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 56 proven. 14 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-07-23 00:02:43,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 00:02:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-23 00:02:44,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956769186] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 00:02:44,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 00:02:44,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 15 [2022-07-23 00:02:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616965937] [2022-07-23 00:02:44,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 00:02:44,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 00:02:44,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:02:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 00:02:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:02:44,030 INFO L87 Difference]: Start difference. First operand 15906 states and 21241 transitions. Second operand has 15 states, 15 states have (on average 13.666666666666666) internal successors, (205), 9 states have internal predecessors, (205), 2 states have call successors, (78), 6 states have call predecessors, (78), 4 states have return successors, (56), 4 states have call predecessors, (56), 2 states have call successors, (56) [2022-07-23 00:02:55,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:02:57,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:02:59,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:03:01,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:03:03,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:03:06,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:03:11,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:03:14,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:03:16,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:03:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:03:21,377 INFO L93 Difference]: Finished difference Result 40954 states and 56841 transitions. [2022-07-23 00:03:21,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 00:03:21,379 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.666666666666666) internal successors, (205), 9 states have internal predecessors, (205), 2 states have call successors, (78), 6 states have call predecessors, (78), 4 states have return successors, (56), 4 states have call predecessors, (56), 2 states have call successors, (56) Word has length 318 [2022-07-23 00:03:21,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:03:21,589 INFO L225 Difference]: With dead ends: 40954 [2022-07-23 00:03:21,589 INFO L226 Difference]: Without dead ends: 25112 [2022-07-23 00:03:21,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 703 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-07-23 00:03:21,679 INFO L413 NwaCegarLoop]: 2776 mSDtfsCounter, 3459 mSDsluCounter, 19580 mSDsCounter, 0 mSdLazyCounter, 15818 mSolverCounterSat, 1997 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 22356 SdHoareTripleChecker+Invalid, 17823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1997 IncrementalHoareTripleChecker+Valid, 15818 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2022-07-23 00:03:21,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 22356 Invalid, 17823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1997 Valid, 15818 Invalid, 8 Unknown, 0 Unchecked, 35.8s Time] [2022-07-23 00:03:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25112 states. [2022-07-23 00:03:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25112 to 15932. [2022-07-23 00:03:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15932 states, 11662 states have (on average 1.2835705710855771) internal successors, (14969), 11919 states have internal predecessors, (14969), 3043 states have call successors, (3043), 1179 states have call predecessors, (3043), 1226 states have return successors, (3283), 3017 states have call predecessors, (3283), 3042 states have call successors, (3283) [2022-07-23 00:03:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15932 states to 15932 states and 21295 transitions. [2022-07-23 00:03:23,094 INFO L78 Accepts]: Start accepts. Automaton has 15932 states and 21295 transitions. Word has length 318 [2022-07-23 00:03:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:03:23,105 INFO L495 AbstractCegarLoop]: Abstraction has 15932 states and 21295 transitions. [2022-07-23 00:03:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.666666666666666) internal successors, (205), 9 states have internal predecessors, (205), 2 states have call successors, (78), 6 states have call predecessors, (78), 4 states have return successors, (56), 4 states have call predecessors, (56), 2 states have call successors, (56) [2022-07-23 00:03:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 15932 states and 21295 transitions. [2022-07-23 00:03:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-23 00:03:23,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:03:23,122 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:03:23,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 00:03:23,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:03:23,336 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:03:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:03:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash -10081009, now seen corresponding path program 1 times [2022-07-23 00:03:23,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:03:23,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599194604] [2022-07-23 00:03:23,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:03:23,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:03:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:03:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 00:03:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 00:03:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 00:03:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-23 00:03:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 00:03:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-23 00:03:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-23 00:03:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-23 00:03:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:03:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 00:03:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:03:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-23 00:03:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-23 00:03:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-23 00:03:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-23 00:03:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-23 00:03:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-23 00:03:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-23 00:03:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:03:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-23 00:03:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-23 00:03:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-23 00:03:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-23 00:03:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:03:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-23 00:03:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:03:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-23 00:03:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-23 00:03:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-23 00:03:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:03:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:03:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:03:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 00:03:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-23 00:03:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 00:03:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-23 00:03:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:03:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-23 00:03:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-23 00:03:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:03:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-07-23 00:03:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:03:24,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599194604] [2022-07-23 00:03:24,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599194604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:03:24,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:03:24,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:03:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70186678] [2022-07-23 00:03:24,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:03:24,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:03:24,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:03:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:03:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:03:24,293 INFO L87 Difference]: Start difference. First operand 15932 states and 21295 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39)