./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 08:48:15,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 08:48:15,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 08:48:15,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 08:48:15,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 08:48:15,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 08:48:15,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 08:48:15,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 08:48:15,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 08:48:15,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 08:48:15,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 08:48:15,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 08:48:15,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 08:48:15,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 08:48:15,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 08:48:15,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 08:48:15,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 08:48:15,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 08:48:15,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 08:48:15,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 08:48:15,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 08:48:15,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 08:48:15,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 08:48:15,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 08:48:15,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 08:48:15,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 08:48:15,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 08:48:15,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 08:48:15,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 08:48:15,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 08:48:15,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 08:48:15,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 08:48:15,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 08:48:15,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 08:48:15,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 08:48:15,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 08:48:15,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 08:48:15,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 08:48:15,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 08:48:15,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 08:48:15,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 08:48:15,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 08:48:15,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 08:48:15,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 08:48:15,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 08:48:15,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 08:48:15,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 08:48:15,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 08:48:15,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 08:48:15,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 08:48:15,131 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 08:48:15,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 08:48:15,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 08:48:15,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 08:48:15,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 08:48:15,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 08:48:15,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 08:48:15,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 08:48:15,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 08:48:15,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 08:48:15,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 08:48:15,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 08:48:15,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 08:48:15,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:48:15,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 08:48:15,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 08:48:15,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 08:48:15,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 08:48:15,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 08:48:15,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 08:48:15,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 08:48:15,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 08:48:15,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 08:48:15,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2021-12-18 08:48:15,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 08:48:15,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 08:48:15,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 08:48:15,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 08:48:15,386 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 08:48:15,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-12-18 08:48:15,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797d7da32/246cbbf712d1433296e247e83973a5ce/FLAGd7ac3747e [2021-12-18 08:48:16,055 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 08:48:16,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-12-18 08:48:16,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797d7da32/246cbbf712d1433296e247e83973a5ce/FLAGd7ac3747e [2021-12-18 08:48:16,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/797d7da32/246cbbf712d1433296e247e83973a5ce [2021-12-18 08:48:16,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 08:48:16,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 08:48:16,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 08:48:16,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 08:48:16,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 08:48:16,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:48:16" (1/1) ... [2021-12-18 08:48:16,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416234fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:16, skipping insertion in model container [2021-12-18 08:48:16,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:48:16" (1/1) ... [2021-12-18 08:48:16,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 08:48:16,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 08:48:17,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-12-18 08:48:17,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:48:17,862 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 08:48:18,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-12-18 08:48:18,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:48:18,367 INFO L208 MainTranslator]: Completed translation [2021-12-18 08:48:18,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18 WrapperNode [2021-12-18 08:48:18,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 08:48:18,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 08:48:18,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 08:48:18,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 08:48:18,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,564 INFO L137 Inliner]: procedures = 274, calls = 2121, calls flagged for inlining = 123, calls inlined = 120, statements flattened = 4342 [2021-12-18 08:48:18,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 08:48:18,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 08:48:18,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 08:48:18,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 08:48:18,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 08:48:18,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 08:48:18,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 08:48:18,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 08:48:18,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (1/1) ... [2021-12-18 08:48:18,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:48:18,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:48:18,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 08:48:18,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 08:48:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2021-12-18 08:48:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2021-12-18 08:48:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_open [2021-12-18 08:48:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_open [2021-12-18 08:48:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 08:48:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 08:48:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-18 08:48:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-18 08:48:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 08:48:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 08:48:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 08:48:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 08:48:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_dec_reset [2021-12-18 08:48:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_dec_reset [2021-12-18 08:48:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_get_link_status [2021-12-18 08:48:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_get_link_status [2021-12-18 08:48:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 08:48:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 08:48:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 08:48:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 08:48:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 08:48:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 08:48:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_set_circuit_type [2021-12-18 08:48:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_set_circuit_type [2021-12-18 08:48:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkinput [2021-12-18 08:48:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkinput [2021-12-18 08:48:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 08:48:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 08:48:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 08:48:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 08:48:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 08:48:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 08:48:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_100ft [2021-12-18 08:48:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_100ft [2021-12-18 08:48:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 08:48:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 08:48:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 08:48:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 08:48:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_scram [2021-12-18 08:48:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_scram [2021-12-18 08:48:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-12-18 08:48:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-12-18 08:48:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_close [2021-12-18 08:48:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_close [2021-12-18 08:48:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkoutput [2021-12-18 08:48:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkoutput [2021-12-18 08:48:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2021-12-18 08:48:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2021-12-18 08:48:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 08:48:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 08:48:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_get_stats [2021-12-18 08:48:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_get_stats [2021-12-18 08:48:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 08:48:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_sc [2021-12-18 08:48:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_sc [2021-12-18 08:48:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2021-12-18 08:48:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2021-12-18 08:48:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_netif [2021-12-18 08:48:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_netif [2021-12-18 08:48:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 08:48:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-18 08:48:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-18 08:48:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-18 08:48:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-18 08:48:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 08:48:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 08:48:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_trace [2021-12-18 08:48:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_trace [2021-12-18 08:48:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 08:48:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110 [2021-12-18 08:48:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110 [2021-12-18 08:48:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 08:48:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-12-18 08:48:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-12-18 08:48:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-18 08:48:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-18 08:48:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 08:48:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 08:48:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_type [2021-12-18 08:48:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_type [2021-12-18 08:48:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 08:48:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 08:48:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_remove_one [2021-12-18 08:48:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_remove_one [2021-12-18 08:48:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-18 08:48:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-18 08:48:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_write [2021-12-18 08:48:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_write [2021-12-18 08:48:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_close [2021-12-18 08:48:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_close [2021-12-18 08:48:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 08:48:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 08:48:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_off [2021-12-18 08:48:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_off [2021-12-18 08:48:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 08:48:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 08:48:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 08:48:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-12-18 08:48:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-12-18 08:48:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 08:48:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 08:48:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 08:48:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 08:48:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_softreset [2021-12-18 08:48:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_softreset [2021-12-18 08:48:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110_bit [2021-12-18 08:48:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110_bit [2021-12-18 08:48:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 08:48:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 08:48:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 08:48:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 08:48:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 08:48:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-18 08:48:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-18 08:48:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 08:48:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 08:48:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_writereg [2021-12-18 08:48:18,842 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_writereg [2021-12-18 08:48:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ioctl [2021-12-18 08:48:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ioctl [2021-12-18 08:48:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 08:48:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 08:48:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_attach [2021-12-18 08:48:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_attach [2021-12-18 08:48:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-12-18 08:48:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-12-18 08:48:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2021-12-18 08:48:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2021-12-18 08:48:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 08:48:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 08:48:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 08:48:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-18 08:48:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-18 08:48:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 08:48:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 08:48:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 08:48:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 08:48:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_readreg [2021-12-18 08:48:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_readreg [2021-12-18 08:48:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 08:48:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 08:48:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-18 08:48:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-18 08:48:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 08:48:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 08:48:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-18 08:48:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-18 08:48:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_open [2021-12-18 08:48:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_open [2021-12-18 08:48:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-18 08:48:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-18 08:48:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_on [2021-12-18 08:48:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_on [2021-12-18 08:48:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-12-18 08:48:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-12-18 08:48:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 08:48:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_set_protocol [2021-12-18 08:48:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_set_protocol [2021-12-18 08:48:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-18 08:48:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-18 08:48:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-12-18 08:48:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-12-18 08:48:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-18 08:48:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-18 08:48:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 08:48:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 08:48:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-12-18 08:48:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-12-18 08:48:19,387 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 08:48:19,389 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 08:48:20,107 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 08:48:22,383 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 08:48:22,401 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 08:48:22,402 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 08:48:22,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:48:22 BoogieIcfgContainer [2021-12-18 08:48:22,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 08:48:22,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 08:48:22,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 08:48:22,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 08:48:22,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:48:16" (1/3) ... [2021-12-18 08:48:22,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba01a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:48:22, skipping insertion in model container [2021-12-18 08:48:22,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:48:18" (2/3) ... [2021-12-18 08:48:22,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba01a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:48:22, skipping insertion in model container [2021-12-18 08:48:22,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:48:22" (3/3) ... [2021-12-18 08:48:22,412 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-12-18 08:48:22,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 08:48:22,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 08:48:22,463 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 08:48:22,468 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 08:48:22,469 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 08:48:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) [2021-12-18 08:48:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 08:48:22,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:48:22,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 08:48:22,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:48:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:48:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2114030879, now seen corresponding path program 1 times [2021-12-18 08:48:22,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:48:22,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824391318] [2021-12-18 08:48:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:48:22,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:48:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:48:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:22,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:48:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:48:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:23,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:48:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:48:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 08:48:23,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:48:23,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824391318] [2021-12-18 08:48:23,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824391318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:48:23,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:48:23,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 08:48:23,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513976683] [2021-12-18 08:48:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:48:23,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:48:23,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:48:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:48:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:48:23,126 INFO L87 Difference]: Start difference. First operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 08:48:26,318 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 [] [2021-12-18 08:48:28,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:48:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:48:34,079 INFO L93 Difference]: Finished difference Result 3793 states and 5763 transitions. [2021-12-18 08:48:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 08:48:34,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2021-12-18 08:48:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:48:34,115 INFO L225 Difference]: With dead ends: 3793 [2021-12-18 08:48:34,115 INFO L226 Difference]: Without dead ends: 1987 [2021-12-18 08:48:34,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:48:34,138 INFO L933 BasicCegarLoop]: 2366 mSDtfsCounter, 1193 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 1518 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 4638 SdHoareTripleChecker+Invalid, 4387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1518 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-18 08:48:34,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 4638 Invalid, 4387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1518 Valid, 2867 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-12-18 08:48:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-18 08:48:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1777. [2021-12-18 08:48:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1145 states have (on average 1.3161572052401747) internal successors, (1507), 1185 states have internal predecessors, (1507), 557 states have call successors, (557), 75 states have call predecessors, (557), 74 states have return successors, (556), 541 states have call predecessors, (556), 556 states have call successors, (556) [2021-12-18 08:48:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2620 transitions. [2021-12-18 08:48:34,303 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2620 transitions. Word has length 92 [2021-12-18 08:48:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:48:34,304 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2620 transitions. [2021-12-18 08:48:34,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 08:48:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2620 transitions. [2021-12-18 08:48:34,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 08:48:34,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:48:34,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 08:48:34,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 08:48:34,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:48:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:48:34,312 INFO L85 PathProgramCache]: Analyzing trace with hash -645505755, now seen corresponding path program 1 times [2021-12-18 08:48:34,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:48:34,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726839356] [2021-12-18 08:48:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:48:34,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:48:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:48:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:48:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:48:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:48:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:48:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 08:48:34,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:48:34,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726839356] [2021-12-18 08:48:34,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726839356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:48:34,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:48:34,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 08:48:34,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44799893] [2021-12-18 08:48:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:48:34,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:48:34,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:48:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:48:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:48:34,572 INFO L87 Difference]: Start difference. First operand 1777 states and 2620 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 08:48:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:48:43,326 INFO L93 Difference]: Finished difference Result 5629 states and 8535 transitions. [2021-12-18 08:48:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:48:43,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 92 [2021-12-18 08:48:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:48:43,353 INFO L225 Difference]: With dead ends: 5629 [2021-12-18 08:48:43,353 INFO L226 Difference]: Without dead ends: 3870 [2021-12-18 08:48:43,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:48:43,367 INFO L933 BasicCegarLoop]: 3061 mSDtfsCounter, 4266 mSDsluCounter, 4024 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 3208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 7085 SdHoareTripleChecker+Invalid, 7064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3208 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:48:43,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4593 Valid, 7085 Invalid, 7064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3208 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-12-18 08:48:43,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-12-18 08:48:43,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3449. [2021-12-18 08:48:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 2214 states have (on average 1.3175248419150858) internal successors, (2917), 2292 states have internal predecessors, (2917), 1087 states have call successors, (1087), 148 states have call predecessors, (1087), 147 states have return successors, (1086), 1056 states have call predecessors, (1086), 1086 states have call successors, (1086) [2021-12-18 08:48:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 5090 transitions. [2021-12-18 08:48:43,534 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 5090 transitions. Word has length 92 [2021-12-18 08:48:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:48:43,536 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 5090 transitions. [2021-12-18 08:48:43,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 08:48:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 5090 transitions. [2021-12-18 08:48:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-18 08:48:43,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:48:43,543 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:48:43,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 08:48:43,544 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:48:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:48:43,545 INFO L85 PathProgramCache]: Analyzing trace with hash -600008244, now seen corresponding path program 1 times [2021-12-18 08:48:43,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:48:43,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5975383] [2021-12-18 08:48:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:48:43,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:48:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:48:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:48:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:48:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:48:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:48:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 08:48:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-18 08:48:43,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:48:43,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5975383] [2021-12-18 08:48:43,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5975383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:48:43,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:48:43,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 08:48:43,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781635637] [2021-12-18 08:48:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:48:43,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:48:43,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:48:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:48:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:48:43,857 INFO L87 Difference]: Start difference. First operand 3449 states and 5090 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 08:48:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:48:50,095 INFO L93 Difference]: Finished difference Result 6414 states and 9853 transitions. [2021-12-18 08:48:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:48:50,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2021-12-18 08:48:50,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:48:50,148 INFO L225 Difference]: With dead ends: 6414 [2021-12-18 08:48:50,148 INFO L226 Difference]: Without dead ends: 6411 [2021-12-18 08:48:50,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:48:50,160 INFO L933 BasicCegarLoop]: 3463 mSDtfsCounter, 4112 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 3484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 6063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3484 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-18 08:48:50,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4351 Valid, 6252 Invalid, 6063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3484 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-12-18 08:48:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-12-18 08:48:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5756. [2021-12-18 08:48:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 3679 states have (on average 1.3101386246262572) internal successors, (4820), 3821 states have internal predecessors, (4820), 1815 states have call successors, (1815), 258 states have call predecessors, (1815), 261 states have return successors, (1901), 1758 states have call predecessors, (1901), 1814 states have call successors, (1901) [2021-12-18 08:48:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 8536 transitions. [2021-12-18 08:48:50,425 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 8536 transitions. Word has length 122 [2021-12-18 08:48:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:48:50,427 INFO L470 AbstractCegarLoop]: Abstraction has 5756 states and 8536 transitions. [2021-12-18 08:48:50,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 08:48:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 8536 transitions. [2021-12-18 08:48:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-18 08:48:50,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:48:50,441 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:48:50,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 08:48:50,442 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:48:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:48:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash -377035489, now seen corresponding path program 1 times [2021-12-18 08:48:50,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:48:50,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608834523] [2021-12-18 08:48:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:48:50,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:48:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:48:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:48:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:48:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:48:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:48:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:48:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 08:48:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 08:48:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 08:48:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 08:48:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 08:48:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 08:48:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:48:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 08:48:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 08:48:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:48:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:48:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:48:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 08:48:50,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:48:50,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608834523] [2021-12-18 08:48:50,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608834523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:48:50,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:48:50,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 08:48:50,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689847546] [2021-12-18 08:48:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:48:50,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 08:48:50,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:48:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 08:48:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:48:50,851 INFO L87 Difference]: Start difference. First operand 5756 states and 8536 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:48:54,482 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 [] [2021-12-18 08:49:04,327 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 [] [2021-12-18 08:49:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:49:07,554 INFO L93 Difference]: Finished difference Result 18798 states and 28686 transitions. [2021-12-18 08:49:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 08:49:07,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 178 [2021-12-18 08:49:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:49:07,643 INFO L225 Difference]: With dead ends: 18798 [2021-12-18 08:49:07,643 INFO L226 Difference]: Without dead ends: 13074 [2021-12-18 08:49:07,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-18 08:49:07,682 INFO L933 BasicCegarLoop]: 2305 mSDtfsCounter, 6175 mSDsluCounter, 7092 mSDsCounter, 0 mSdLazyCounter, 9439 mSolverCounterSat, 6098 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6631 SdHoareTripleChecker+Valid, 9397 SdHoareTripleChecker+Invalid, 15539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6098 IncrementalHoareTripleChecker+Valid, 9439 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-12-18 08:49:07,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6631 Valid, 9397 Invalid, 15539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6098 Valid, 9439 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2021-12-18 08:49:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2021-12-18 08:49:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 11991. [2021-12-18 08:49:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11991 states, 7661 states have (on average 1.3042683722751598) internal successors, (9992), 7945 states have internal predecessors, (9992), 3777 states have call successors, (3777), 513 states have call predecessors, (3777), 552 states have return successors, (4166), 3700 states have call predecessors, (4166), 3776 states have call successors, (4166) [2021-12-18 08:49:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 17935 transitions. [2021-12-18 08:49:08,247 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 17935 transitions. Word has length 178 [2021-12-18 08:49:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:49:08,248 INFO L470 AbstractCegarLoop]: Abstraction has 11991 states and 17935 transitions. [2021-12-18 08:49:08,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:49:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 17935 transitions. [2021-12-18 08:49:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-18 08:49:08,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:49:08,260 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:49:08,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 08:49:08,260 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:49:08,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:49:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash 706437634, now seen corresponding path program 1 times [2021-12-18 08:49:08,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:49:08,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399733373] [2021-12-18 08:49:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:49:08,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:49:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:49:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:49:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:49:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:49:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:49:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 08:49:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 08:49:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 08:49:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 08:49:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 08:49:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 08:49:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 08:49:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 08:49:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 08:49:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:49:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 08:49:08,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:49:08,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399733373] [2021-12-18 08:49:08,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399733373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:49:08,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:49:08,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 08:49:08,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849008267] [2021-12-18 08:49:08,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:49:08,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 08:49:08,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:49:08,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 08:49:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:49:08,540 INFO L87 Difference]: Start difference. First operand 11991 states and 17935 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:49:13,079 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 [] [2021-12-18 08:49:15,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:49:16,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:49:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:49:28,721 INFO L93 Difference]: Finished difference Result 38047 states and 58243 transitions. [2021-12-18 08:49:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 08:49:28,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 177 [2021-12-18 08:49:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:49:28,953 INFO L225 Difference]: With dead ends: 38047 [2021-12-18 08:49:28,954 INFO L226 Difference]: Without dead ends: 26088 [2021-12-18 08:49:29,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-18 08:49:29,045 INFO L933 BasicCegarLoop]: 2465 mSDtfsCounter, 6102 mSDsluCounter, 8100 mSDsCounter, 0 mSdLazyCounter, 11185 mSolverCounterSat, 5927 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6554 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 17114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5927 IncrementalHoareTripleChecker+Valid, 11185 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-12-18 08:49:29,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6554 Valid, 10565 Invalid, 17114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5927 Valid, 11185 Invalid, 2 Unknown, 0 Unchecked, 18.9s Time] [2021-12-18 08:49:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26088 states. [2021-12-18 08:49:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26088 to 23903. [2021-12-18 08:49:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23903 states, 15257 states have (on average 1.3030084551353478) internal successors, (19880), 15839 states have internal predecessors, (19880), 7543 states have call successors, (7543), 1023 states have call predecessors, (7543), 1102 states have return successors, (8388), 7376 states have call predecessors, (8388), 7542 states have call successors, (8388) [2021-12-18 08:49:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23903 states to 23903 states and 35811 transitions. [2021-12-18 08:49:30,285 INFO L78 Accepts]: Start accepts. Automaton has 23903 states and 35811 transitions. Word has length 177 [2021-12-18 08:49:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:49:30,286 INFO L470 AbstractCegarLoop]: Abstraction has 23903 states and 35811 transitions. [2021-12-18 08:49:30,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:49:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 23903 states and 35811 transitions. [2021-12-18 08:49:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-18 08:49:30,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:49:30,309 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:49:30,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 08:49:30,309 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:49:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:49:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1998761348, now seen corresponding path program 1 times [2021-12-18 08:49:30,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:49:30,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586372404] [2021-12-18 08:49:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:49:30,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:49:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:49:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:49:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:49:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:49:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:49:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 08:49:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 08:49:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 08:49:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 08:49:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 08:49:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 08:49:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 08:49:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 08:49:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 08:49:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:49:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 08:49:30,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:49:30,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586372404] [2021-12-18 08:49:30,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586372404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:49:30,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:49:30,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 08:49:30,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57235864] [2021-12-18 08:49:30,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:49:30,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 08:49:30,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:49:30,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 08:49:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:49:30,586 INFO L87 Difference]: Start difference. First operand 23903 states and 35811 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:49:34,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:49:36,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:49:40,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:49:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:49:49,948 INFO L93 Difference]: Finished difference Result 75987 states and 116351 transitions. [2021-12-18 08:49:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 08:49:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 180 [2021-12-18 08:49:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:49:50,397 INFO L225 Difference]: With dead ends: 75987 [2021-12-18 08:49:50,397 INFO L226 Difference]: Without dead ends: 52116 [2021-12-18 08:49:50,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-18 08:49:50,646 INFO L933 BasicCegarLoop]: 2272 mSDtfsCounter, 6217 mSDsluCounter, 7572 mSDsCounter, 0 mSdLazyCounter, 10845 mSolverCounterSat, 6149 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6674 SdHoareTripleChecker+Valid, 9844 SdHoareTripleChecker+Invalid, 16996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6149 IncrementalHoareTripleChecker+Valid, 10845 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:49:50,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6674 Valid, 9844 Invalid, 16996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6149 Valid, 10845 Invalid, 2 Unknown, 0 Unchecked, 17.3s Time] [2021-12-18 08:49:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52116 states. [2021-12-18 08:49:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52116 to 47787. [2021-12-18 08:49:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47787 states, 30509 states have (on average 1.3023042380936773) internal successors, (39732), 31669 states have internal predecessors, (39732), 15073 states have call successors, (15073), 2045 states have call predecessors, (15073), 2204 states have return successors, (16866), 14744 states have call predecessors, (16866), 15072 states have call successors, (16866) [2021-12-18 08:49:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47787 states to 47787 states and 71671 transitions. [2021-12-18 08:49:53,244 INFO L78 Accepts]: Start accepts. Automaton has 47787 states and 71671 transitions. Word has length 180 [2021-12-18 08:49:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:49:53,244 INFO L470 AbstractCegarLoop]: Abstraction has 47787 states and 71671 transitions. [2021-12-18 08:49:53,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:49:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 47787 states and 71671 transitions. [2021-12-18 08:49:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-18 08:49:53,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:49:53,275 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:49:53,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 08:49:53,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:49:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:49:53,276 INFO L85 PathProgramCache]: Analyzing trace with hash -272632065, now seen corresponding path program 1 times [2021-12-18 08:49:53,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:49:53,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540692352] [2021-12-18 08:49:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:49:53,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:49:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:49:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:49:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:49:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:49:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:49:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:49:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 08:49:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 08:49:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 08:49:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 08:49:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 08:49:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 08:49:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 08:49:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 08:49:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 08:49:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:49:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:49:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:49:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 08:49:53,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:49:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540692352] [2021-12-18 08:49:53,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540692352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:49:53,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:49:53,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 08:49:53,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395390132] [2021-12-18 08:49:53,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:49:53,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 08:49:53,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:49:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 08:49:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:49:53,563 INFO L87 Difference]: Start difference. First operand 47787 states and 71671 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:50:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:50:12,239 INFO L93 Difference]: Finished difference Result 151119 states and 231545 transitions. [2021-12-18 08:50:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 08:50:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 179 [2021-12-18 08:50:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:50:13,269 INFO L225 Difference]: With dead ends: 151119 [2021-12-18 08:50:13,269 INFO L226 Difference]: Without dead ends: 103364 [2021-12-18 08:50:13,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-18 08:50:13,568 INFO L933 BasicCegarLoop]: 2284 mSDtfsCounter, 6206 mSDsluCounter, 7615 mSDsCounter, 0 mSdLazyCounter, 10866 mSolverCounterSat, 6145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6660 SdHoareTripleChecker+Valid, 9899 SdHoareTripleChecker+Invalid, 17011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6145 IncrementalHoareTripleChecker+Valid, 10866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:50:13,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6660 Valid, 9899 Invalid, 17011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6145 Valid, 10866 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2021-12-18 08:50:13,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103364 states. [2021-12-18 08:50:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103364 to 94859. [2021-12-18 08:50:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94859 states, 60509 states have (on average 1.3008973871655456) internal successors, (78716), 62805 states have internal predecessors, (78716), 29961 states have call successors, (29961), 4069 states have call predecessors, (29961), 4388 states have return successors, (33712), 29314 states have call predecessors, (33712), 29960 states have call successors, (33712) [2021-12-18 08:50:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94859 states to 94859 states and 142389 transitions. [2021-12-18 08:50:18,521 INFO L78 Accepts]: Start accepts. Automaton has 94859 states and 142389 transitions. Word has length 179 [2021-12-18 08:50:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:50:18,522 INFO L470 AbstractCegarLoop]: Abstraction has 94859 states and 142389 transitions. [2021-12-18 08:50:18,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 08:50:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 94859 states and 142389 transitions. [2021-12-18 08:50:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-18 08:50:18,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:50:18,550 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:50:18,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 08:50:18,550 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:50:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:50:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1107819808, now seen corresponding path program 1 times [2021-12-18 08:50:18,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:50:18,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72147588] [2021-12-18 08:50:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:50:18,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:50:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:50:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:50:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:50:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:50:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:50:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:50:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:50:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:50:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 08:50:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 08:50:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 08:50:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 08:50:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 08:50:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:50:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 08:50:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 08:50:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 08:50:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 08:50:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:50:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 08:50:19,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:50:19,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72147588] [2021-12-18 08:50:19,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72147588] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:50:19,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996737760] [2021-12-18 08:50:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:50:19,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:50:19,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:50:19,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 08:50:19,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 08:50:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:19,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2351 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:50:19,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:50:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 08:50:20,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:50:20,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996737760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:50:20,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:50:20,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-18 08:50:20,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049106433] [2021-12-18 08:50:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:50:20,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:50:20,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:50:20,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:50:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-18 08:50:20,002 INFO L87 Difference]: Start difference. First operand 94859 states and 142389 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:50:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:50:25,783 INFO L93 Difference]: Finished difference Result 237149 states and 356253 transitions. [2021-12-18 08:50:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 08:50:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2021-12-18 08:50:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:50:27,261 INFO L225 Difference]: With dead ends: 237149 [2021-12-18 08:50:27,262 INFO L226 Difference]: Without dead ends: 142322 [2021-12-18 08:50:28,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-12-18 08:50:28,127 INFO L933 BasicCegarLoop]: 3641 mSDtfsCounter, 2645 mSDsluCounter, 17163 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 20804 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:50:28,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 20804 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:50:28,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142322 states. [2021-12-18 08:50:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142322 to 142027. [2021-12-18 08:50:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142027 states, 90605 states have (on average 1.3014072071077756) internal successors, (117914), 94061 states have internal predecessors, (117914), 44841 states have call successors, (44841), 6085 states have call predecessors, (44841), 6580 states have return successors, (50800), 43868 states have call predecessors, (50800), 44840 states have call successors, (50800) [2021-12-18 08:50:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142027 states to 142027 states and 213555 transitions. [2021-12-18 08:50:35,143 INFO L78 Accepts]: Start accepts. Automaton has 142027 states and 213555 transitions. Word has length 190 [2021-12-18 08:50:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:50:35,144 INFO L470 AbstractCegarLoop]: Abstraction has 142027 states and 213555 transitions. [2021-12-18 08:50:35,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:50:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 142027 states and 213555 transitions. [2021-12-18 08:50:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-18 08:50:35,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:50:35,173 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 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] [2021-12-18 08:50:35,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 08:50:35,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:50:35,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:50:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:50:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1156044162, now seen corresponding path program 1 times [2021-12-18 08:50:35,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:50:35,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850623115] [2021-12-18 08:50:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:50:35,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:50:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:50:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:50:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:50:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:50:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:50:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:50:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 08:50:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 08:50:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 08:50:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 08:50:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 08:50:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 08:50:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 08:50:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 08:50:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 08:50:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 08:50:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 08:50:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 08:50:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:50:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 08:50:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 08:50:35,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:50:35,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850623115] [2021-12-18 08:50:35,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850623115] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:50:35,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009533708] [2021-12-18 08:50:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:50:35,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:50:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:50:35,744 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 08:50:35,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 08:50:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:50:36,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:50:36,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:50:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 08:50:36,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:50:36,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009533708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:50:36,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:50:36,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-18 08:50:36,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570800024] [2021-12-18 08:50:36,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:50:36,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:50:36,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:50:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:50:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-18 08:50:36,679 INFO L87 Difference]: Start difference. First operand 142027 states and 213555 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:50:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:50:44,946 INFO L93 Difference]: Finished difference Result 331591 states and 498677 transitions. [2021-12-18 08:50:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 08:50:44,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2021-12-18 08:50:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:50:46,912 INFO L225 Difference]: With dead ends: 331591 [2021-12-18 08:50:46,912 INFO L226 Difference]: Without dead ends: 189596 [2021-12-18 08:50:48,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-18 08:50:48,099 INFO L933 BasicCegarLoop]: 3638 mSDtfsCounter, 2645 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 20777 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:50:48,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 20777 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:50:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189596 states.