./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_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-?-6c24879 [2022-07-12 12:43:33,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:43:33,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:43:33,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:43:33,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:43:33,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:43:33,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:43:33,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:43:33,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:43:33,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:43:33,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:43:33,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:43:33,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:43:33,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:43:33,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:43:33,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:43:33,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:43:33,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:43:33,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:43:33,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:43:33,743 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:43:33,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:43:33,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:43:33,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:43:33,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:43:33,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:43:33,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:43:33,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:43:33,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:43:33,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:43:33,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:43:33,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:43:33,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:43:33,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:43:33,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:43:33,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:43:33,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:43:33,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:43:33,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:43:33,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:43:33,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:43:33,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:43:33,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:43:33,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:43:33,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:43:33,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:43:33,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:43:33,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:43:33,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:43:33,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:43:33,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:43:33,793 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:43:33,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:43:33,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:43:33,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:43:33,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:43:33,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:43:33,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:43:33,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:43:33,794 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:43:33,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:43:33,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:43:33,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:43:33,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:43:33,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:43:33,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:43:33,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:43:33,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:43:33,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:43:33,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:43:33,797 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:43:33,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:43:33,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:43:33,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 [2022-07-12 12:43:33,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:43:34,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:43:34,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:43:34,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:43:34,013 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:43:34,014 INFO L432 ainManager$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 [2022-07-12 12:43:34,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e844d6f/0693c8c1560c42fcad919df8cc4c8b3b/FLAG2383b24c7 [2022-07-12 12:43:34,738 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:43:34,739 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 [2022-07-12 12:43:34,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e844d6f/0693c8c1560c42fcad919df8cc4c8b3b/FLAG2383b24c7 [2022-07-12 12:43:35,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e844d6f/0693c8c1560c42fcad919df8cc4c8b3b [2022-07-12 12:43:35,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:43:35,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:43:35,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:43:35,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:43:35,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:43:35,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:43:35" (1/1) ... [2022-07-12 12:43:35,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d7faff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:35, skipping insertion in model container [2022-07-12 12:43:35,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:43:35" (1/1) ... [2022-07-12 12:43:35,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:43:35,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:43:35,582 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2022-07-12 12:43:35,583 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] [2022-07-12 12:43:35,923 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] [2022-07-12 12:43:36,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:43:36,966 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:43:37,095 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2022-07-12 12:43:37,095 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] [2022-07-12 12:43:37,113 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] [2022-07-12 12:43:37,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:43:37,428 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:43:37,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37 WrapperNode [2022-07-12 12:43:37,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:43:37,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:43:37,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:43:37,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:43:37,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,657 INFO L137 Inliner]: procedures = 350, calls = 2000, calls flagged for inlining = 171, calls inlined = 139, statements flattened = 4723 [2022-07-12 12:43:37,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:43:37,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:43:37,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:43:37,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:43:37,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:43:37,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:43:37,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:43:37,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:43:37,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (1/1) ... [2022-07-12 12:43:37,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:43:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:43:37,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:43:37,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:43:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:43:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-07-12 12:43:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-07-12 12:43:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:43:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-07-12 12:43:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-07-12 12:43:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:43:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:43:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-12 12:43:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-12 12:43:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-07-12 12:43:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-07-12 12:43:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_change_mtu [2022-07-12 12:43:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_change_mtu [2022-07-12 12:43:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-12 12:43:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-12 12:43:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-07-12 12:43:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-07-12 12:43:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-12 12:43:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-12 12:43:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-12 12:43:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-12 12:43:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:43:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:43:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-12 12:43:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-12 12:43:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-07-12 12:43:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-07-12 12:43:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-07-12 12:43:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-07-12 12:43:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-07-12 12:43:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-07-12 12:43:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_remove [2022-07-12 12:43:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_remove [2022-07-12 12:43:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:43:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:43:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-12 12:43:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-12 12:43:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-12 12:43:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-12 12:43:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-07-12 12:43:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-07-12 12:43:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-12 12:43:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-12 12:43:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 12:43:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 12:43:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-07-12 12:43:37,929 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-07-12 12:43:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:43:37,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:43:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure netif_set_real_num_tx_queues [2022-07-12 12:43:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_set_real_num_tx_queues [2022-07-12 12:43:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-07-12 12:43:37,931 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-07-12 12:43:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-07-12 12:43:37,933 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-07-12 12:43:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_stats64 [2022-07-12 12:43:37,933 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_stats64 [2022-07-12 12:43:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:43:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:43:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-07-12 12:43:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-07-12 12:43:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-12 12:43:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-12 12:43:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-07-12 12:43:37,935 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-07-12 12:43:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:43:37,935 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-07-12 12:43:37,936 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-07-12 12:43:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-07-12 12:43:37,936 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-07-12 12:43:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-07-12 12:43:37,936 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-07-12 12:43:37,936 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-12 12:43:37,937 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-12 12:43:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2022-07-12 12:43:37,937 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2022-07-12 12:43:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:43:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-12 12:43:37,937 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-12 12:43:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-12 12:43:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-12 12:43:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-12 12:43:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-12 12:43:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-12 12:43:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-07-12 12:43:37,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-07-12 12:43:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-07-12 12:43:37,939 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-07-12 12:43:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 12:43:37,940 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 12:43:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:43:37,940 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-12 12:43:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-12 12:43:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:43:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure write_queue_xenstore_keys [2022-07-12 12:43:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure write_queue_xenstore_keys [2022-07-12 12:43:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-07-12 12:43:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-07-12 12:43:37,941 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-12 12:43:37,941 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-12 12:43:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-07-12 12:43:37,942 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-07-12 12:43:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-07-12 12:43:37,942 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-07-12 12:43:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-07-12 12:43:37,943 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-07-12 12:43:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 12:43:37,943 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 12:43:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 12:43:37,943 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 12:43:37,943 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-12 12:43:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-12 12:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-07-12 12:43:37,945 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-07-12 12:43:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-07-12 12:43:37,946 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-07-12 12:43:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:43:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:43:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:43:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-12 12:43:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-12 12:43:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-07-12 12:43:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-07-12 12:43:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-07-12 12:43:37,954 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-07-12 12:43:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-12 12:43:37,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-12 12:43:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 12:43:37,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 12:43:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:43:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-07-12 12:43:37,955 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-07-12 12:43:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-07-12 12:43:37,955 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-07-12 12:43:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure netback_changed [2022-07-12 12:43:37,956 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_changed [2022-07-12 12:43:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2022-07-12 12:43:37,956 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2022-07-12 12:43:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-07-12 12:43:37,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-07-12 12:43:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:43:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-12 12:43:37,956 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-12 12:43:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-12 12:43:37,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-12 12:43:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-07-12 12:43:37,957 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-07-12 12:43:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:43:37,957 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:43:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_select_queue [2022-07-12 12:43:37,957 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_select_queue [2022-07-12 12:43:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-07-12 12:43:37,957 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-07-12 12:43:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2022-07-12 12:43:37,958 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2022-07-12 12:43:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 12:43:37,958 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 12:43:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-12 12:43:37,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-12 12:43:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-07-12 12:43:37,958 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-07-12 12:43:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:43:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:43:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-12 12:43:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-12 12:43:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-07-12 12:43:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-07-12 12:43:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:43:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-12 12:43:37,959 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-12 12:43:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-12 12:43:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-12 12:43:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:43:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:43:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2022-07-12 12:43:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2022-07-12 12:43:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-07-12 12:43:37,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-07-12 12:43:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_fix_features [2022-07-12 12:43:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_fix_features [2022-07-12 12:43:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:43:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-12 12:43:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-12 12:43:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:43:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-12 12:43:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-12 12:43:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-07-12 12:43:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-07-12 12:43:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:43:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-12 12:43:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-12 12:43:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-07-12 12:43:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-07-12 12:43:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-12 12:43:37,962 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-12 12:43:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-07-12 12:43:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-07-12 12:43:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-07-12 12:43:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-07-12 12:43:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-07-12 12:43:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-07-12 12:43:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-12 12:43:37,963 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-12 12:43:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-07-12 12:43:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-07-12 12:43:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-07-12 12:43:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-07-12 12:43:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 12:43:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 12:43:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_set_features [2022-07-12 12:43:37,964 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_set_features [2022-07-12 12:43:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-07-12 12:43:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-07-12 12:43:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-12 12:43:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-12 12:43:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:43:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-12 12:43:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-12 12:43:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-12 12:43:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-12 12:43:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-07-12 12:43:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-07-12 12:43:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-07-12 12:43:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-07-12 12:43:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:43:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:43:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-07-12 12:43:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-07-12 12:43:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-12 12:43:37,967 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-12 12:43:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 12:43:37,967 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 12:43:38,541 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:43:38,545 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:43:39,399 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:43:46,367 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:43:46,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:43:46,383 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:43:46,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:43:46 BoogieIcfgContainer [2022-07-12 12:43:46,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:43:46,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:43:46,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:43:46,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:43:46,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:43:35" (1/3) ... [2022-07-12 12:43:46,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b90ee10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:43:46, skipping insertion in model container [2022-07-12 12:43:46,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:43:37" (2/3) ... [2022-07-12 12:43:46,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b90ee10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:43:46, skipping insertion in model container [2022-07-12 12:43:46,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:43:46" (3/3) ... [2022-07-12 12:43:46,396 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 [2022-07-12 12:43:46,406 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:43:46,407 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:43:46,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:43:46,499 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@4e137c43, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a3cbd01 [2022-07-12 12:43:46,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:43:46,510 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) [2022-07-12 12:43:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 12:43:46,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:43:46,541 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] [2022-07-12 12:43:46,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:43:46,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:43:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1904983006, now seen corresponding path program 1 times [2022-07-12 12:43:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:43:46,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260702356] [2022-07-12 12:43:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:43:46,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:43:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:43:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:43:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:43:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:43:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:43:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:43:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:43:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:43:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:43:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:43:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:43:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:43:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:43:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:43:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 12:43:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 12:43:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 12:43:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:43:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 12:43:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:43:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 12:43:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:43:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 12:43:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 12:43:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-12 12:43:47,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:43:47,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260702356] [2022-07-12 12:43:47,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260702356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:43:47,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:43:47,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:43:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789142735] [2022-07-12 12:43:47,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:43:47,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:43:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:43:47,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:43:47,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:43:47,362 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) [2022-07-12 12:43:53,696 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 [] [2022-07-12 12:43:56,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:43:58,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:01,448 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 [] [2022-07-12 12:44:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:44:02,508 INFO L93 Difference]: Finished difference Result 4647 states and 6519 transitions. [2022-07-12 12:44:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:44:02,511 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 [2022-07-12 12:44:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:44:02,550 INFO L225 Difference]: With dead ends: 4647 [2022-07-12 12:44:02,551 INFO L226 Difference]: Without dead ends: 2980 [2022-07-12 12:44:02,563 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 [2022-07-12 12:44:02,566 INFO L413 NwaCegarLoop]: 2196 mSDtfsCounter, 4031 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 4045 mSolverCounterSat, 2804 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 6853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2804 IncrementalHoareTripleChecker+Valid, 4045 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:44:02,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 5406 Invalid, 6853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2804 Valid, 4045 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2022-07-12 12:44:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2022-07-12 12:44:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2610. [2022-07-12 12:44:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 1844 states have (on average 1.2787418655097613) internal successors, (2358), 1887 states have internal predecessors, (2358), 572 states have call successors, (572), 193 states have call predecessors, (572), 193 states have return successors, (576), 562 states have call predecessors, (576), 571 states have call successors, (576) [2022-07-12 12:44:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3506 transitions. [2022-07-12 12:44:02,761 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3506 transitions. Word has length 162 [2022-07-12 12:44:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:44:02,762 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3506 transitions. [2022-07-12 12:44:02,762 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) [2022-07-12 12:44:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3506 transitions. [2022-07-12 12:44:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 12:44:02,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:44:02,772 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] [2022-07-12 12:44:02,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:44:02,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:44:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:44:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1691301829, now seen corresponding path program 1 times [2022-07-12 12:44:02,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:44:02,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358048961] [2022-07-12 12:44:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:44:02,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:44:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:44:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:44:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:44:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:02,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:44:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:44:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:44:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:44:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:44:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:44:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:44:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:44:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:44:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 12:44:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:44:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 12:44:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 12:44:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 12:44:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:44:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:44:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-12 12:44:03,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:44:03,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358048961] [2022-07-12 12:44:03,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358048961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:44:03,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:44:03,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:44:03,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626582072] [2022-07-12 12:44:03,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:44:03,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:44:03,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:44:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:44:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:44:03,152 INFO L87 Difference]: Start difference. First operand 2610 states and 3506 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-07-12 12:44:08,715 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 [] [2022-07-12 12:44:11,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:13,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:15,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:18,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:21,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:23,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:44:24,098 INFO L93 Difference]: Finished difference Result 6910 states and 9409 transitions. [2022-07-12 12:44:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:44:24,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 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 154 [2022-07-12 12:44:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:44:24,120 INFO L225 Difference]: With dead ends: 6910 [2022-07-12 12:44:24,121 INFO L226 Difference]: Without dead ends: 4327 [2022-07-12 12:44:24,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:44:24,130 INFO L413 NwaCegarLoop]: 3023 mSDtfsCounter, 2944 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 1979 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3185 SdHoareTripleChecker+Valid, 6854 SdHoareTripleChecker+Invalid, 5255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1979 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:44:24,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3185 Valid, 6854 Invalid, 5255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1979 Valid, 3270 Invalid, 6 Unknown, 0 Unchecked, 20.6s Time] [2022-07-12 12:44:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-07-12 12:44:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 3826. [2022-07-12 12:44:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 2729 states have (on average 1.2836203737632832) internal successors, (3503), 2789 states have internal predecessors, (3503), 818 states have call successors, (818), 273 states have call predecessors, (818), 278 states have return successors, (844), 810 states have call predecessors, (844), 817 states have call successors, (844) [2022-07-12 12:44:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5165 transitions. [2022-07-12 12:44:24,275 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5165 transitions. Word has length 154 [2022-07-12 12:44:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:44:24,276 INFO L495 AbstractCegarLoop]: Abstraction has 3826 states and 5165 transitions. [2022-07-12 12:44:24,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-07-12 12:44:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5165 transitions. [2022-07-12 12:44:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-12 12:44:24,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:44:24,281 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] [2022-07-12 12:44:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:44:24,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:44:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:44:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash -372963628, now seen corresponding path program 1 times [2022-07-12 12:44:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:44:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15652465] [2022-07-12 12:44:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:44:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:44:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:44:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:44:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:44:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:44:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:44:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:44:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:44:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:44:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:44:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:44:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:44:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:44:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 12:44:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:44:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 12:44:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:44:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 12:44:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 12:44:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 12:44:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:44:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 12:44:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-07-12 12:44:24,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:44:24,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15652465] [2022-07-12 12:44:24,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15652465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:44:24,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:44:24,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:44:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372015291] [2022-07-12 12:44:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:44:24,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:44:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:44:24,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:44:24,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:44:24,617 INFO L87 Difference]: Start difference. First operand 3826 states and 5165 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 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) [2022-07-12 12:44:29,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:31,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:44:33,370 INFO L93 Difference]: Finished difference Result 8097 states and 11035 transitions. [2022-07-12 12:44:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:44:33,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 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 180 [2022-07-12 12:44:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:44:33,388 INFO L225 Difference]: With dead ends: 8097 [2022-07-12 12:44:33,388 INFO L226 Difference]: Without dead ends: 4315 [2022-07-12 12:44:33,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:44:33,400 INFO L413 NwaCegarLoop]: 2035 mSDtfsCounter, 1040 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 3842 mSolverCounterSat, 947 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 7244 SdHoareTripleChecker+Invalid, 4791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 947 IncrementalHoareTripleChecker+Valid, 3842 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:44:33,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 7244 Invalid, 4791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [947 Valid, 3842 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-07-12 12:44:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2022-07-12 12:44:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 3826. [2022-07-12 12:44:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 2729 states have (on average 1.2806888970318797) internal successors, (3495), 2789 states have internal predecessors, (3495), 818 states have call successors, (818), 273 states have call predecessors, (818), 278 states have return successors, (844), 810 states have call predecessors, (844), 817 states have call successors, (844) [2022-07-12 12:44:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5157 transitions. [2022-07-12 12:44:33,521 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5157 transitions. Word has length 180 [2022-07-12 12:44:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:44:33,522 INFO L495 AbstractCegarLoop]: Abstraction has 3826 states and 5157 transitions. [2022-07-12 12:44:33,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 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) [2022-07-12 12:44:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5157 transitions. [2022-07-12 12:44:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-12 12:44:33,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:44:33,526 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] [2022-07-12 12:44:33,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:44:33,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:44:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:44:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1252714224, now seen corresponding path program 1 times [2022-07-12 12:44:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:44:33,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71351999] [2022-07-12 12:44:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:44:33,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:44:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:44:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:44:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:44:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:44:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:44:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:44:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:44:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:44:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:44:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:44:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:44:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:44:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:44:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 12:44:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 12:44:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:44:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 12:44:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 12:44:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 12:44:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:44:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 12:44:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-12 12:44:33,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:44:33,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71351999] [2022-07-12 12:44:33,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71351999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:44:33,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:44:33,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:44:33,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481223688] [2022-07-12 12:44:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:44:33,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:44:33,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:44:33,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:44:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:44:33,925 INFO L87 Difference]: Start difference. First operand 3826 states and 5157 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) [2022-07-12 12:44:38,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:41,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:43,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:46,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:48,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:50,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:52,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:55,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:57,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:44:58,145 INFO L93 Difference]: Finished difference Result 7452 states and 10225 transitions. [2022-07-12 12:44:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:44:58,146 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 [2022-07-12 12:44:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:44:58,172 INFO L225 Difference]: With dead ends: 7452 [2022-07-12 12:44:58,173 INFO L226 Difference]: Without dead ends: 7449 [2022-07-12 12:44:58,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:44:58,176 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 3893 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 2625 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2625 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:44:58,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 5570 Invalid, 5665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2625 Valid, 3031 Invalid, 9 Unknown, 0 Unchecked, 23.8s Time] [2022-07-12 12:44:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2022-07-12 12:44:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 6547. [2022-07-12 12:44:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 4732 states have (on average 1.2922654268808116) internal successors, (6115), 4842 states have internal predecessors, (6115), 1325 states have call successors, (1325), 480 states have call predecessors, (1325), 489 states have return successors, (1400), 1302 states have call predecessors, (1400), 1324 states have call successors, (1400) [2022-07-12 12:44:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8840 transitions. [2022-07-12 12:44:58,391 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8840 transitions. Word has length 187 [2022-07-12 12:44:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:44:58,392 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 8840 transitions. [2022-07-12 12:44:58,393 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) [2022-07-12 12:44:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8840 transitions. [2022-07-12 12:44:58,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 12:44:58,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:44:58,402 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] [2022-07-12 12:44:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:44:58,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:44:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:44:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash -898207309, now seen corresponding path program 1 times [2022-07-12 12:44:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:44:58,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105253548] [2022-07-12 12:44:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:44:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:44:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:44:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:44:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:44:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:44:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:44:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:44:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:44:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:44:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:44:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:44:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:44:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:44:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:44:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 12:44:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 12:44:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:44:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 12:44:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:44:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:44:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 12:44:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 12:44:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-12 12:44:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 12:44:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 12:44:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 12:44:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 12:44:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:44:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 12:44:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:44:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-12 12:44:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:44:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-12 12:44:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-12 12:44:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-12 12:44:58,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:44:58,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105253548] [2022-07-12 12:44:58,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105253548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:44:58,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:44:58,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:44:58,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591397709] [2022-07-12 12:44:58,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:44:58,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:44:58,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:44:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:44:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:44:58,816 INFO L87 Difference]: Start difference. First operand 6547 states and 8840 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) [2022-07-12 12:45:05,668 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 [] [2022-07-12 12:45:08,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:10,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:13,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:15,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:17,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:20,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:22,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:24,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:45:25,400 INFO L93 Difference]: Finished difference Result 17303 states and 23641 transitions. [2022-07-12 12:45:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 12:45:25,401 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 [2022-07-12 12:45:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:45:25,443 INFO L225 Difference]: With dead ends: 17303 [2022-07-12 12:45:25,443 INFO L226 Difference]: Without dead ends: 10808 [2022-07-12 12:45:25,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-07-12 12:45:25,463 INFO L413 NwaCegarLoop]: 2896 mSDtfsCounter, 3649 mSDsluCounter, 5157 mSDsCounter, 0 mSdLazyCounter, 5619 mSolverCounterSat, 2722 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3851 SdHoareTripleChecker+Valid, 8053 SdHoareTripleChecker+Invalid, 8350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2722 IncrementalHoareTripleChecker+Valid, 5619 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:45:25,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3851 Valid, 8053 Invalid, 8350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2722 Valid, 5619 Invalid, 9 Unknown, 0 Unchecked, 26.0s Time] [2022-07-12 12:45:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10808 states. [2022-07-12 12:45:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10808 to 9369. [2022-07-12 12:45:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9369 states, 6868 states have (on average 1.2912055911473501) internal successors, (8868), 7021 states have internal predecessors, (8868), 1789 states have call successors, (1789), 694 states have call predecessors, (1789), 711 states have return successors, (1904), 1757 states have call predecessors, (1904), 1788 states have call successors, (1904) [2022-07-12 12:45:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9369 states to 9369 states and 12561 transitions. [2022-07-12 12:45:25,827 INFO L78 Accepts]: Start accepts. Automaton has 9369 states and 12561 transitions. Word has length 254 [2022-07-12 12:45:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:45:25,827 INFO L495 AbstractCegarLoop]: Abstraction has 9369 states and 12561 transitions. [2022-07-12 12:45:25,828 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) [2022-07-12 12:45:25,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9369 states and 12561 transitions. [2022-07-12 12:45:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-12 12:45:25,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:45:25,843 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] [2022-07-12 12:45:25,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:45:25,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:45:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:45:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2121719809, now seen corresponding path program 1 times [2022-07-12 12:45:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:45:25,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123993512] [2022-07-12 12:45:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:45:25,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:45:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:45:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:45:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:45:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:45:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:45:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:45:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:45:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:45:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:45:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:45:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:45:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:45:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:45:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 12:45:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 12:45:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:45:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 12:45:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:45:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 12:45:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 12:45:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 12:45:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 12:45:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 12:45:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 12:45:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 12:45:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-12 12:45:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-12 12:45:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 12:45:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-12 12:45:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-12 12:45:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:45:26,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123993512] [2022-07-12 12:45:26,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123993512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:45:26,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:45:26,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:45:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119385335] [2022-07-12 12:45:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:45:26,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:45:26,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:45:26,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:45:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:45:26,222 INFO L87 Difference]: Start difference. First operand 9369 states and 12561 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) [2022-07-12 12:45:31,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:33,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:45:35,353 INFO L93 Difference]: Finished difference Result 20044 states and 27146 transitions. [2022-07-12 12:45:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:45:35,353 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 [2022-07-12 12:45:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:45:35,394 INFO L225 Difference]: With dead ends: 20044 [2022-07-12 12:45:35,395 INFO L226 Difference]: Without dead ends: 10727 [2022-07-12 12:45:35,421 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 [2022-07-12 12:45:35,422 INFO L413 NwaCegarLoop]: 1912 mSDtfsCounter, 1948 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 3831 mSolverCounterSat, 1627 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 5897 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1627 IncrementalHoareTripleChecker+Valid, 3831 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:45:35,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 5897 Invalid, 5460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1627 Valid, 3831 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-07-12 12:45:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10727 states. [2022-07-12 12:45:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10727 to 9371. [2022-07-12 12:45:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9371 states, 6870 states have (on average 1.2911208151382825) internal successors, (8870), 7023 states have internal predecessors, (8870), 1789 states have call successors, (1789), 694 states have call predecessors, (1789), 711 states have return successors, (1904), 1757 states have call predecessors, (1904), 1788 states have call successors, (1904) [2022-07-12 12:45:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9371 states to 9371 states and 12563 transitions. [2022-07-12 12:45:35,748 INFO L78 Accepts]: Start accepts. Automaton has 9371 states and 12563 transitions. Word has length 273 [2022-07-12 12:45:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:45:35,749 INFO L495 AbstractCegarLoop]: Abstraction has 9371 states and 12563 transitions. [2022-07-12 12:45:35,749 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) [2022-07-12 12:45:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9371 states and 12563 transitions. [2022-07-12 12:45:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-12 12:45:35,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:45:35,763 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] [2022-07-12 12:45:35,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:45:35,763 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:45:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:45:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash -782873689, now seen corresponding path program 1 times [2022-07-12 12:45:35,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:45:35,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443617854] [2022-07-12 12:45:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:45:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:45:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:45:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:45:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:45:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:45:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:45:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:45:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:45:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:45:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:45:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:45:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:45:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:45:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:45:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 12:45:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 12:45:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:45:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 12:45:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:45:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 12:45:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 12:45:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 12:45:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 12:45:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 12:45:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 12:45:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-12 12:45:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-12 12:45:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 12:45:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-12 12:45:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 12:45:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-12 12:45:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:45:36,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443617854] [2022-07-12 12:45:36,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443617854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:45:36,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910053453] [2022-07-12 12:45:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:45:36,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:45:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:45:36,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:45:36,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:45:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:37,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:45:37,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:45:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-12 12:45:37,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:45:37,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910053453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:45:37,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:45:37,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-12 12:45:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956127278] [2022-07-12 12:45:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:45:37,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:45:37,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:45:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:45:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:45:37,112 INFO L87 Difference]: Start difference. First operand 9371 states and 12563 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) [2022-07-12 12:45:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:45:37,328 INFO L93 Difference]: Finished difference Result 18720 states and 25162 transitions. [2022-07-12 12:45:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:45:37,329 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 [2022-07-12 12:45:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:45:37,359 INFO L225 Difference]: With dead ends: 18720 [2022-07-12 12:45:37,359 INFO L226 Difference]: Without dead ends: 9378 [2022-07-12 12:45:37,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:45:37,387 INFO L413 NwaCegarLoop]: 2166 mSDtfsCounter, 2 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:45:37,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6492 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:45:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2022-07-12 12:45:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 9378. [2022-07-12 12:45:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9378 states, 6877 states have (on average 1.2908244874218409) internal successors, (8877), 7030 states have internal predecessors, (8877), 1789 states have call successors, (1789), 694 states have call predecessors, (1789), 711 states have return successors, (1904), 1757 states have call predecessors, (1904), 1788 states have call successors, (1904) [2022-07-12 12:45:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9378 states to 9378 states and 12570 transitions. [2022-07-12 12:45:37,687 INFO L78 Accepts]: Start accepts. Automaton has 9378 states and 12570 transitions. Word has length 277 [2022-07-12 12:45:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:45:37,687 INFO L495 AbstractCegarLoop]: Abstraction has 9378 states and 12570 transitions. [2022-07-12 12:45:37,687 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) [2022-07-12 12:45:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 9378 states and 12570 transitions. [2022-07-12 12:45:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-12 12:45:37,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:45:37,700 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] [2022-07-12 12:45:37,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 12:45:37,909 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 [2022-07-12 12:45:37,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:45:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:45:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1420546353, now seen corresponding path program 1 times [2022-07-12 12:45:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:45:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859470960] [2022-07-12 12:45:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:45:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:45:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:45:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:45:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:45:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:45:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:45:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:45:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:45:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:45:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:45:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:45:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:45:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 12:45:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 12:45:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 12:45:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 12:45:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 12:45:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 12:45:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 12:45:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 12:45:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 12:45:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 12:45:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 12:45:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 12:45:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-12 12:45:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-12 12:45:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 12:45:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-12 12:45:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:45:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-12 12:45:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-12 12:45:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-12 12:45:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:45:38,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859470960] [2022-07-12 12:45:38,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859470960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:45:38,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779248925] [2022-07-12 12:45:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:45:38,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:45:38,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:45:38,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:45:38,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:45:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:39,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 12:45:39,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:45:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-12 12:45:39,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:45:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-07-12 12:45:39,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779248925] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:45:39,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:45:39,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-07-12 12:45:39,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896483858] [2022-07-12 12:45:39,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:45:39,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 12:45:39,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:45:39,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 12:45:39,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-12 12:45:39,533 INFO L87 Difference]: Start difference. First operand 9378 states and 12570 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) [2022-07-12 12:45:48,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:50,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:52,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:54,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:56,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:59,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:01,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:03,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:05,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:08,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:10,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:12,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:46:13,752 INFO L93 Difference]: Finished difference Result 20124 states and 27308 transitions. [2022-07-12 12:46:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 12:46:13,754 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 [2022-07-12 12:46:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:46:13,793 INFO L225 Difference]: With dead ends: 20124 [2022-07-12 12:46:13,793 INFO L226 Difference]: Without dead ends: 10775 [2022-07-12 12:46:13,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2022-07-12 12:46:13,821 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 2405 mSDsluCounter, 8787 mSDsCounter, 0 mSdLazyCounter, 9003 mSolverCounterSat, 2123 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 10691 SdHoareTripleChecker+Invalid, 11138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 9003 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:46:13,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2534 Valid, 10691 Invalid, 11138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2123 Valid, 9003 Invalid, 12 Unknown, 0 Unchecked, 33.4s Time] [2022-07-12 12:46:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2022-07-12 12:46:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 9401. [2022-07-12 12:46:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9401 states, 6899 states have (on average 1.290621829250616) internal successors, (8904), 7052 states have internal predecessors, (8904), 1789 states have call successors, (1789), 695 states have call predecessors, (1789), 712 states have return successors, (1904), 1757 states have call predecessors, (1904), 1788 states have call successors, (1904) [2022-07-12 12:46:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 12597 transitions. [2022-07-12 12:46:14,157 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 12597 transitions. Word has length 280 [2022-07-12 12:46:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:46:14,158 INFO L495 AbstractCegarLoop]: Abstraction has 9401 states and 12597 transitions. [2022-07-12 12:46:14,158 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) [2022-07-12 12:46:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 12597 transitions. [2022-07-12 12:46:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-12 12:46:14,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:46:14,172 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] [2022-07-12 12:46:14,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:46:14,393 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 [2022-07-12 12:46:14,394 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:46:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:46:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 295763262, now seen corresponding path program 1 times [2022-07-12 12:46:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:46:14,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151936314] [2022-07-12 12:46:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:46:14,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:46:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:46:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:46:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:46:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:46:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:46:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:46:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:46:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:46:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:46:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:46:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:46:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:46:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 12:46:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 12:46:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 12:46:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 12:46:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 12:46:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 12:46:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 12:46:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-12 12:46:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 12:46:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 12:46:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-12 12:46:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-12 12:46:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-12 12:46:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 12:46:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-12 12:46:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-12 12:46:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-12 12:46:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-07-12 12:46:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:46:15,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151936314] [2022-07-12 12:46:15,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151936314] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:46:15,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244130780] [2022-07-12 12:46:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:46:15,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:46:15,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:46:15,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:46:15,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 12:46:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:15,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 3142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:46:15,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:46:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-12 12:46:16,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:46:16,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244130780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:46:16,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:46:16,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-07-12 12:46:16,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360839243] [2022-07-12 12:46:16,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:46:16,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:46:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:46:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:46:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-07-12 12:46:16,032 INFO L87 Difference]: Start difference. First operand 9401 states and 12597 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) [2022-07-12 12:46:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:46:16,408 INFO L93 Difference]: Finished difference Result 19918 states and 26945 transitions. [2022-07-12 12:46:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:46:16,408 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 [2022-07-12 12:46:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:46:16,441 INFO L225 Difference]: With dead ends: 19918 [2022-07-12 12:46:16,441 INFO L226 Difference]: Without dead ends: 10579 [2022-07-12 12:46:16,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-07-12 12:46:16,469 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:46:16,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 9708 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:46:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10579 states. [2022-07-12 12:46:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10579 to 9405. [2022-07-12 12:46:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9405 states, 6903 states have (on average 1.2904534260466465) internal successors, (8908), 7056 states have internal predecessors, (8908), 1789 states have call successors, (1789), 695 states have call predecessors, (1789), 712 states have return successors, (1904), 1757 states have call predecessors, (1904), 1788 states have call successors, (1904) [2022-07-12 12:46:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 12601 transitions. [2022-07-12 12:46:16,816 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 12601 transitions. Word has length 288 [2022-07-12 12:46:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:46:16,817 INFO L495 AbstractCegarLoop]: Abstraction has 9405 states and 12601 transitions. [2022-07-12 12:46:16,817 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) [2022-07-12 12:46:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 12601 transitions. [2022-07-12 12:46:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-12 12:46:16,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:46:16,832 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] [2022-07-12 12:46:16,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 12:46:17,051 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 [2022-07-12 12:46:17,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:46:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:46:17,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1877006029, now seen corresponding path program 2 times [2022-07-12 12:46:17,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:46:17,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330106983] [2022-07-12 12:46:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:46:17,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:46:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:46:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:46:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:46:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:46:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:46:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:46:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:46:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:46:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:46:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:46:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:46:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:46:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 12:46:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 12:46:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 12:46:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 12:46:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 12:46:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 12:46:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 12:46:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-12 12:46:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 12:46:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-12 12:46:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-12 12:46:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-12 12:46:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 12:46:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-12 12:46:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-12 12:46:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-12 12:46:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-12 12:46:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-07-12 12:46:17,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:46:17,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330106983] [2022-07-12 12:46:17,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330106983] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:46:17,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104436720] [2022-07-12 12:46:17,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:46:17,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:46:17,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:46:17,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:46:17,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 12:46:18,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:46:18,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:46:18,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 12:46:18,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:46:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 127 proven. 50 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-12 12:46:18,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:46:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-12 12:46:18,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104436720] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:46:18,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:46:18,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 19 [2022-07-12 12:46:18,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689287422] [2022-07-12 12:46:18,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:46:18,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 12:46:18,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:46:18,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 12:46:18,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-07-12 12:46:18,937 INFO L87 Difference]: Start difference. First operand 9405 states and 12601 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) [2022-07-12 12:46:29,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:31,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:33,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:35,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:37,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:39,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:43,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:46,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:48,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:46:50,713 INFO L93 Difference]: Finished difference Result 20203 states and 27416 transitions. [2022-07-12 12:46:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 12:46:50,714 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 [2022-07-12 12:46:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:46:50,752 INFO L225 Difference]: With dead ends: 20203 [2022-07-12 12:46:50,753 INFO L226 Difference]: Without dead ends: 10840 [2022-07-12 12:46:50,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 12:46:50,779 INFO L413 NwaCegarLoop]: 1911 mSDtfsCounter, 2038 mSDsluCounter, 11735 mSDsCounter, 0 mSdLazyCounter, 12015 mSolverCounterSat, 1675 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 13646 SdHoareTripleChecker+Invalid, 13699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1675 IncrementalHoareTripleChecker+Valid, 12015 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:46:50,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 13646 Invalid, 13699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1675 Valid, 12015 Invalid, 9 Unknown, 0 Unchecked, 30.9s Time] [2022-07-12 12:46:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2022-07-12 12:46:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 9425. [2022-07-12 12:46:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9425 states, 6923 states have (on average 1.2894698829987) internal successors, (8927), 7076 states have internal predecessors, (8927), 1789 states have call successors, (1789), 695 states have call predecessors, (1789), 712 states have return successors, (1904), 1757 states have call predecessors, (1904), 1788 states have call successors, (1904) [2022-07-12 12:46:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 12620 transitions. [2022-07-12 12:46:51,227 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 12620 transitions. Word has length 291 [2022-07-12 12:46:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:46:51,230 INFO L495 AbstractCegarLoop]: Abstraction has 9425 states and 12620 transitions. [2022-07-12 12:46:51,230 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) [2022-07-12 12:46:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 12620 transitions. [2022-07-12 12:46:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-12 12:46:51,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:46:51,245 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] [2022-07-12 12:46:51,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 12:46:51,459 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 [2022-07-12 12:46:51,460 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:46:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:46:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2131457523, now seen corresponding path program 3 times [2022-07-12 12:46:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:46:51,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430592744] [2022-07-12 12:46:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:46:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:46:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:46:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:46:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:46:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:46:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:46:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:46:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:46:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:46:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:46:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:46:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:46:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:46:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:46:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 12:46:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 12:46:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 12:46:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 12:46:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 12:46:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 12:46:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 12:46:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 12:46:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-12 12:46:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-12 12:46:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-12 12:46:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-12 12:46:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 12:46:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-12 12:46:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-12 12:46:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-12 12:46:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-12 12:46:52,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:46:52,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430592744] [2022-07-12 12:46:52,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430592744] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:46:52,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528674767] [2022-07-12 12:46:52,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 12:46:52,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:46:52,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:46:52,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:46:52,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 12:46:53,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 12:46:53,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:46:53,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-12 12:46:53,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:46:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-07-12 12:46:53,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:46:53,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528674767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:46:53,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:46:53,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 20 [2022-07-12 12:46:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197338253] [2022-07-12 12:46:53,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:46:53,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 12:46:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:46:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 12:46:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-12 12:46:53,813 INFO L87 Difference]: Start difference. First operand 9425 states and 12620 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) [2022-07-12 12:46:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:46:55,473 INFO L93 Difference]: Finished difference Result 21144 states and 28838 transitions. [2022-07-12 12:46:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 12:46:55,474 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 [2022-07-12 12:46:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:46:55,509 INFO L225 Difference]: With dead ends: 21144 [2022-07-12 12:46:55,509 INFO L226 Difference]: Without dead ends: 11783 [2022-07-12 12:46:55,530 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 [2022-07-12 12:46:55,531 INFO L413 NwaCegarLoop]: 2849 mSDtfsCounter, 1475 mSDsluCounter, 26579 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 29428 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:46:55,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 29428 Invalid, 1177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 12:46:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11783 states. [2022-07-12 12:46:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11783 to 9449. [2022-07-12 12:46:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9449 states, 6941 states have (on average 1.2887192047255438) internal successors, (8945), 7094 states have internal predecessors, (8945), 1795 states have call successors, (1795), 695 states have call predecessors, (1795), 712 states have return successors, (1910), 1763 states have call predecessors, (1910), 1794 states have call successors, (1910) [2022-07-12 12:46:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9449 states to 9449 states and 12650 transitions. [2022-07-12 12:46:55,923 INFO L78 Accepts]: Start accepts. Automaton has 9449 states and 12650 transitions. Word has length 297 [2022-07-12 12:46:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:46:55,923 INFO L495 AbstractCegarLoop]: Abstraction has 9449 states and 12650 transitions. [2022-07-12 12:46:55,923 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) [2022-07-12 12:46:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9449 states and 12650 transitions. [2022-07-12 12:46:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-12 12:46:55,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:46:55,936 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:46:55,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 12:46:56,163 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 [2022-07-12 12:46:56,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:46:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:46:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 587039640, now seen corresponding path program 1 times [2022-07-12 12:46:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:46:56,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927682533] [2022-07-12 12:46:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:46:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:46:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:46:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:46:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:46:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:46:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:46:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:46:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:46:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:46:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:46:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:46:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:46:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:46:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:46:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 12:46:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 12:46:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:46:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 12:46:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:46:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 12:46:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 12:46:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 12:46:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 12:46:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:46:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:46:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 12:46:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-12 12:46:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-12 12:46:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 12:46:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-12 12:46:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 12:46:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:46:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-12 12:46:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-07-12 12:46:56,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:46:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927682533] [2022-07-12 12:46:56,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927682533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:46:56,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:46:56,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:46:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839835899] [2022-07-12 12:46:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:46:56,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:46:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:46:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:46:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:46:56,545 INFO L87 Difference]: Start difference. First operand 9449 states and 12650 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (38), 7 states have call predecessors, (38), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-12 12:47:02,148 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 [] [2022-07-12 12:47:04,292 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 [] [2022-07-12 12:47:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:47:06,460 INFO L93 Difference]: Finished difference Result 20242 states and 27461 transitions. [2022-07-12 12:47:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 12:47:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (38), 7 states have call predecessors, (38), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 316 [2022-07-12 12:47:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:47:06,489 INFO L225 Difference]: With dead ends: 20242 [2022-07-12 12:47:06,489 INFO L226 Difference]: Without dead ends: 10857 [2022-07-12 12:47:06,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-12 12:47:06,509 INFO L413 NwaCegarLoop]: 1927 mSDtfsCounter, 2008 mSDsluCounter, 4427 mSDsCounter, 0 mSdLazyCounter, 4448 mSolverCounterSat, 1603 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 6354 SdHoareTripleChecker+Invalid, 6053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 4448 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:47:06,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 6354 Invalid, 6053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1603 Valid, 4448 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2022-07-12 12:47:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10857 states. [2022-07-12 12:47:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10857 to 9467. [2022-07-12 12:47:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9467 states, 6959 states have (on average 1.2875413134070988) internal successors, (8960), 7112 states have internal predecessors, (8960), 1795 states have call successors, (1795), 695 states have call predecessors, (1795), 712 states have return successors, (1910), 1763 states have call predecessors, (1910), 1794 states have call successors, (1910) [2022-07-12 12:47:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9467 states to 9467 states and 12665 transitions. [2022-07-12 12:47:06,948 INFO L78 Accepts]: Start accepts. Automaton has 9467 states and 12665 transitions. Word has length 316 [2022-07-12 12:47:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:47:06,948 INFO L495 AbstractCegarLoop]: Abstraction has 9467 states and 12665 transitions. [2022-07-12 12:47:06,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (38), 7 states have call predecessors, (38), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-12 12:47:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 9467 states and 12665 transitions. [2022-07-12 12:47:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-12 12:47:06,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:47:06,961 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] [2022-07-12 12:47:06,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 12:47:06,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:47:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:47:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash 288649879, now seen corresponding path program 1 times [2022-07-12 12:47:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:47:06,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623621577] [2022-07-12 12:47:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:47:06,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:47:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:47:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:47:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:47:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:47:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:47:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:47:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:47:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:47:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:47:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:47:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:47:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:47:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:47:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 12:47:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 12:47:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 12:47:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 12:47:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 12:47:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 12:47:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 12:47:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 12:47:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 12:47:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 12:47:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 12:47:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-12 12:47:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-12 12:47:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 12:47:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 12:47:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:47:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 12:47:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:47:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 12:47:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-12 12:47:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-07-12 12:47:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-12 12:47:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:47:07,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623621577] [2022-07-12 12:47:07,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623621577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:47:07,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:47:07,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:47:07,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480596110] [2022-07-12 12:47:07,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:47:07,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:47:07,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:47:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:47:07,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:47:07,315 INFO L87 Difference]: Start difference. First operand 9467 states and 12665 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 3 states have internal predecessors, (174), 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) [2022-07-12 12:47:14,836 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 [] [2022-07-12 12:47:18,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:47:20,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:47:22,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:47:25,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:47:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:47:27,427 INFO L93 Difference]: Finished difference Result 27634 states and 37391 transitions. [2022-07-12 12:47:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 12:47:27,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 3 states have internal predecessors, (174), 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 322 [2022-07-12 12:47:27,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:47:27,486 INFO L225 Difference]: With dead ends: 27634 [2022-07-12 12:47:27,486 INFO L226 Difference]: Without dead ends: 18231 [2022-07-12 12:47:27,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-07-12 12:47:27,508 INFO L413 NwaCegarLoop]: 2778 mSDtfsCounter, 4744 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 5694 mSolverCounterSat, 3241 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 7942 SdHoareTripleChecker+Invalid, 8940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3241 IncrementalHoareTripleChecker+Valid, 5694 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:47:27,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5054 Valid, 7942 Invalid, 8940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3241 Valid, 5694 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2022-07-12 12:47:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18231 states. [2022-07-12 12:47:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18231 to 15606. [2022-07-12 12:47:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15606 states, 11449 states have (on average 1.2843043060529304) internal successors, (14704), 11693 states have internal predecessors, (14704), 2949 states have call successors, (2949), 1179 states have call predecessors, (2949), 1207 states have return successors, (3081), 2912 states have call predecessors, (3081), 2948 states have call successors, (3081) [2022-07-12 12:47:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15606 states to 15606 states and 20734 transitions. [2022-07-12 12:47:28,190 INFO L78 Accepts]: Start accepts. Automaton has 15606 states and 20734 transitions. Word has length 322 [2022-07-12 12:47:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:47:28,190 INFO L495 AbstractCegarLoop]: Abstraction has 15606 states and 20734 transitions. [2022-07-12 12:47:28,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 3 states have internal predecessors, (174), 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) [2022-07-12 12:47:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 15606 states and 20734 transitions. [2022-07-12 12:47:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-12 12:47:28,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:47:28,206 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] [2022-07-12 12:47:28,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 12:47:28,207 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:47:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:47:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1786146388, now seen corresponding path program 1 times [2022-07-12 12:47:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:47:28,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912193685] [2022-07-12 12:47:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:47:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:47:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:47:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:47:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:47:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:47:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:47:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:47:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:47:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:47:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:47:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:47:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:47:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:47:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:47:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 12:47:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 12:47:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 12:47:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:47:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 12:47:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 12:47:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 12:47:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 12:47:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 12:47:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 12:47:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-12 12:47:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-12 12:47:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-12 12:47:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-12 12:47:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 12:47:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-12 12:47:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-12 12:47:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:47:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-07-12 12:47:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-12 12:47:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-12 12:47:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:47:28,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912193685] [2022-07-12 12:47:28,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912193685] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:47:28,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825565309] [2022-07-12 12:47:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:47:28,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:47:28,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:47:28,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:47:28,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 12:47:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:47:29,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 12:47:29,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:47:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 56 proven. 14 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-07-12 12:47:29,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:47:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-12 12:47:29,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825565309] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:47:29,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:47:29,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 15 [2022-07-12 12:47:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938563386] [2022-07-12 12:47:29,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:47:29,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 12:47:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:47:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 12:47:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-12 12:47:29,960 INFO L87 Difference]: Start difference. First operand 15606 states and 20734 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)