./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--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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--ethernet--icplus--ipg.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 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 05:13:15,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 05:13:15,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 05:13:15,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 05:13:15,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 05:13:15,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 05:13:15,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 05:13:15,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 05:13:15,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 05:13:15,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 05:13:15,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 05:13:15,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 05:13:15,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 05:13:15,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 05:13:15,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 05:13:15,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 05:13:15,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 05:13:15,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 05:13:15,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 05:13:15,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 05:13:15,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 05:13:15,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 05:13:15,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 05:13:15,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 05:13:15,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 05:13:15,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 05:13:15,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 05:13:15,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 05:13:15,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 05:13:15,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 05:13:15,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 05:13:15,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 05:13:15,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 05:13:15,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 05:13:15,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 05:13:15,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 05:13:15,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 05:13:15,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 05:13:15,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 05:13:15,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 05:13:15,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 05:13:15,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 05:13:15,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 05:13:15,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 05:13:15,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 05:13:15,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 05:13:15,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 05:13:15,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 05:13:15,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 05:13:15,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 05:13:15,777 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 05:13:15,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 05:13:15,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 05:13:15,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 05:13:15,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 05:13:15,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 05:13:15,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 05:13:15,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 05:13:15,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 05:13:15,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 05:13:15,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 05:13:15,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 05:13:15,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 05:13:15,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 05:13:15,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 05:13:15,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 05:13:15,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 05:13:15,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 05:13:15,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 05:13:15,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 05:13:15,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 05:13:15,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 05:13:15,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 05:13:15,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-11-17 05:13:15,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 05:13:16,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 05:13:16,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 05:13:16,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 05:13:16,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 05:13:16,020 INFO L432 ainManager$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--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-17 05:13:16,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c34059f/f8729612ec8a44e5a3130fd5da6a58ea/FLAG6204db300 [2021-11-17 05:13:16,676 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 05:13:16,677 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--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-17 05:13:16,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c34059f/f8729612ec8a44e5a3130fd5da6a58ea/FLAG6204db300 [2021-11-17 05:13:16,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c34059f/f8729612ec8a44e5a3130fd5da6a58ea [2021-11-17 05:13:16,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 05:13:16,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 05:13:16,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 05:13:16,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 05:13:16,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 05:13:16,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:13:16" (1/1) ... [2021-11-17 05:13:16,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcfced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:16, skipping insertion in model container [2021-11-17 05:13:16,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:13:16" (1/1) ... [2021-11-17 05:13:16,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 05:13:16,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 05:13:18,169 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--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-17 05:13:18,217 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 05:13:18,279 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 05:13:18,571 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--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-17 05:13:18,583 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 05:13:18,710 INFO L208 MainTranslator]: Completed translation [2021-11-17 05:13:18,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18 WrapperNode [2021-11-17 05:13:18,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 05:13:18,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 05:13:18,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 05:13:18,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 05:13:18,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:18,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:18,917 INFO L137 Inliner]: procedures = 262, calls = 1347, calls flagged for inlining = 121, calls inlined = 116, statements flattened = 3297 [2021-11-17 05:13:18,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 05:13:18,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 05:13:18,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 05:13:18,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 05:13:18,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:18,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:18,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:18,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:19,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:19,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:19,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:19,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 05:13:19,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 05:13:19,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 05:13:19,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 05:13:19,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (1/1) ... [2021-11-17 05:13:19,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 05:13:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:13:19,221 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) [2021-11-17 05:13:19,232 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 [2021-11-17 05:13:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-11-17 05:13:19,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-11-17 05:13:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-17 05:13:19,264 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-17 05:13:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 05:13:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 05:13:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-17 05:13:19,264 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-17 05:13:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-11-17 05:13:19,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-11-17 05:13:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 05:13:19,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 05:13:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 05:13:19,265 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 05:13:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2021-11-17 05:13:19,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2021-11-17 05:13:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-17 05:13:19,266 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-17 05:13:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-17 05:13:19,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-17 05:13:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 05:13:19,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 05:13:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-17 05:13:19,267 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-17 05:13:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-11-17 05:13:19,267 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-11-17 05:13:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 05:13:19,267 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 05:13:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 05:13:19,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 05:13:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-17 05:13:19,268 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-17 05:13:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-17 05:13:19,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-17 05:13:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-11-17 05:13:19,268 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-11-17 05:13:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-17 05:13:19,269 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-17 05:13:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-17 05:13:19,269 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-17 05:13:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-11-17 05:13:19,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-11-17 05:13:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-17 05:13:19,270 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-17 05:13:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 05:13:19,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 05:13:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-17 05:13:19,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-17 05:13:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 05:13:19,271 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 05:13:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-17 05:13:19,271 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-17 05:13:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-11-17 05:13:19,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-11-17 05:13:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-11-17 05:13:19,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-11-17 05:13:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-17 05:13:19,273 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-17 05:13:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 05:13:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-17 05:13:19,274 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-17 05:13:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-17 05:13:19,274 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-17 05:13:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-17 05:13:19,274 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-17 05:13:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 05:13:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-17 05:13:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-17 05:13:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-17 05:13:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-17 05:13:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-17 05:13:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-17 05:13:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-17 05:13:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-17 05:13:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-11-17 05:13:19,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-11-17 05:13:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-17 05:13:19,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-17 05:13:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-11-17 05:13:19,277 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-11-17 05:13:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 05:13:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 05:13:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-11-17 05:13:19,278 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-11-17 05:13:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 05:13:19,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 05:13:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 05:13:19,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 05:13:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 05:13:19,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 05:13:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 05:13:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-17 05:13:19,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-17 05:13:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-17 05:13:19,280 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-17 05:13:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-11-17 05:13:19,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-11-17 05:13:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-11-17 05:13:19,281 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-11-17 05:13:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-11-17 05:13:19,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-11-17 05:13:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 05:13:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2021-11-17 05:13:19,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2021-11-17 05:13:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-17 05:13:19,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-17 05:13:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 05:13:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-17 05:13:19,282 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-17 05:13:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-17 05:13:19,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-17 05:13:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 05:13:19,283 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 05:13:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-17 05:13:19,283 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-17 05:13:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-17 05:13:19,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-17 05:13:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-17 05:13:19,285 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-17 05:13:19,286 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-17 05:13:19,287 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-17 05:13:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 05:13:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-17 05:13:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-17 05:13:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-17 05:13:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-17 05:13:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-17 05:13:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-17 05:13:19,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 05:13:19,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 05:13:19,294 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-11-17 05:13:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-11-17 05:13:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 05:13:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 05:13:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-11-17 05:13:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-11-17 05:13:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 05:13:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-11-17 05:13:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-11-17 05:13:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 05:13:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 05:13:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-11-17 05:13:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-11-17 05:13:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 05:13:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-17 05:13:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-17 05:13:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 05:13:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-17 05:13:19,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-17 05:13:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-17 05:13:19,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-17 05:13:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-11-17 05:13:19,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-11-17 05:13:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-17 05:13:19,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-17 05:13:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-11-17 05:13:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-11-17 05:13:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-17 05:13:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-17 05:13:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-17 05:13:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-17 05:13:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-11-17 05:13:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-11-17 05:13:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-17 05:13:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-17 05:13:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-11-17 05:13:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-11-17 05:13:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-17 05:13:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-17 05:13:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2021-11-17 05:13:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2021-11-17 05:13:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-17 05:13:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-17 05:13:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 05:13:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-11-17 05:13:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-11-17 05:13:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-11-17 05:13:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-11-17 05:13:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-17 05:13:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-17 05:13:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 05:13:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 05:13:19,912 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 05:13:19,914 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 05:13:20,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 05:13:22,604 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 05:13:22,623 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 05:13:22,623 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-17 05:13:22,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 05:13:22 BoogieIcfgContainer [2021-11-17 05:13:22,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 05:13:22,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 05:13:22,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 05:13:22,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 05:13:22,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 05:13:16" (1/3) ... [2021-11-17 05:13:22,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fbcbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:13:22, skipping insertion in model container [2021-11-17 05:13:22,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:13:18" (2/3) ... [2021-11-17 05:13:22,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fbcbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:13:22, skipping insertion in model container [2021-11-17 05:13:22,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 05:13:22" (3/3) ... [2021-11-17 05:13:22,635 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-17 05:13:22,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 05:13:22,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 05:13:22,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 05:13:22,710 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 [2021-11-17 05:13:22,710 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 05:13:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2021-11-17 05:13:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-17 05:13:22,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:13:22,779 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-17 05:13:22,780 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:13:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:13:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1357410998, now seen corresponding path program 1 times [2021-11-17 05:13:22,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:13:22,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765390639] [2021-11-17 05:13:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:13:22,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:13:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:13:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:13:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:13:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:13:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:13:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:13:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 05:13:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 05:13:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 05:13:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:13:23,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:13:23,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765390639] [2021-11-17 05:13:23,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765390639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:13:23,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 05:13:23,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 05:13:23,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086776690] [2021-11-17 05:13:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:13:23,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 05:13:23,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:13:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 05:13:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 05:13:23,538 INFO L87 Difference]: Start difference. First operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-17 05:13:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:13:28,550 INFO L93 Difference]: Finished difference Result 2992 states and 4288 transitions. [2021-11-17 05:13:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 05:13:28,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2021-11-17 05:13:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:13:28,577 INFO L225 Difference]: With dead ends: 2992 [2021-11-17 05:13:28,577 INFO L226 Difference]: Without dead ends: 1590 [2021-11-17 05:13:28,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-17 05:13:28,592 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1036 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 1084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-17 05:13:28,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 3224 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-17 05:13:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-17 05:13:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1359. [2021-11-17 05:13:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 923 states have (on average 1.2838569880823403) internal successors, (1185), 945 states have internal predecessors, (1185), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2021-11-17 05:13:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1892 transitions. [2021-11-17 05:13:28,721 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1892 transitions. Word has length 121 [2021-11-17 05:13:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:13:28,721 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1892 transitions. [2021-11-17 05:13:28,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-17 05:13:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1892 transitions. [2021-11-17 05:13:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-17 05:13:28,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:13:28,728 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-17 05:13:28,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 05:13:28,729 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:13:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:13:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash -874608722, now seen corresponding path program 1 times [2021-11-17 05:13:28,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:13:28,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95404467] [2021-11-17 05:13:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:13:28,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:13:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:13:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:13:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:13:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:13:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:13:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:13:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 05:13:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 05:13:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 05:13:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:13:29,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:13:29,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95404467] [2021-11-17 05:13:29,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95404467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:13:29,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 05:13:29,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 05:13:29,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395309993] [2021-11-17 05:13:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:13:29,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 05:13:29,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:13:29,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 05:13:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 05:13:29,103 INFO L87 Difference]: Start difference. First operand 1359 states and 1892 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:13:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:13:39,611 INFO L93 Difference]: Finished difference Result 4502 states and 6412 transitions. [2021-11-17 05:13:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 05:13:39,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2021-11-17 05:13:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:13:39,637 INFO L225 Difference]: With dead ends: 4502 [2021-11-17 05:13:39,638 INFO L226 Difference]: Without dead ends: 3164 [2021-11-17 05:13:39,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-17 05:13:39,650 INFO L933 BasicCegarLoop]: 2043 mSDtfsCounter, 3668 mSDsluCounter, 6503 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 2424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 8546 SdHoareTripleChecker+Invalid, 6223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2424 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-17 05:13:39,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3884 Valid, 8546 Invalid, 6223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2424 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2021-11-17 05:13:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-11-17 05:13:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2724. [2021-11-17 05:13:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1851 states have (on average 1.283090221501891) internal successors, (2375), 1897 states have internal predecessors, (2375), 706 states have call successors, (706), 163 states have call predecessors, (706), 166 states have return successors, (727), 707 states have call predecessors, (727), 705 states have call successors, (727) [2021-11-17 05:13:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3808 transitions. [2021-11-17 05:13:39,794 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3808 transitions. Word has length 121 [2021-11-17 05:13:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:13:39,796 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3808 transitions. [2021-11-17 05:13:39,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:13:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3808 transitions. [2021-11-17 05:13:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-17 05:13:39,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:13:39,806 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-17 05:13:39,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 05:13:39,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:13:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:13:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash -967648419, now seen corresponding path program 1 times [2021-11-17 05:13:39,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:13:39,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16511104] [2021-11-17 05:13:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:13:39,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:13:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:13:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:13:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:13:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:13:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:13:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:13:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 05:13:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 05:13:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 05:13:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:13:40,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:13:40,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16511104] [2021-11-17 05:13:40,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16511104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:13:40,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 05:13:40,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 05:13:40,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939633473] [2021-11-17 05:13:40,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:13:40,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 05:13:40,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:13:40,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 05:13:40,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 05:13:40,132 INFO L87 Difference]: Start difference. First operand 2724 states and 3808 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:13:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:13:47,743 INFO L93 Difference]: Finished difference Result 9009 states and 12892 transitions. [2021-11-17 05:13:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 05:13:47,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2021-11-17 05:13:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:13:47,784 INFO L225 Difference]: With dead ends: 9009 [2021-11-17 05:13:47,785 INFO L226 Difference]: Without dead ends: 6306 [2021-11-17 05:13:47,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-17 05:13:47,798 INFO L933 BasicCegarLoop]: 1971 mSDtfsCounter, 4797 mSDsluCounter, 5631 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 3532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 7602 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3532 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-17 05:13:47,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5014 Valid, 7602 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3532 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-17 05:13:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-11-17 05:13:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5487. [2021-11-17 05:13:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 3730 states have (on average 1.2823056300268096) internal successors, (4783), 3826 states have internal predecessors, (4783), 1415 states have call successors, (1415), 326 states have call predecessors, (1415), 341 states have return successors, (1524), 1422 states have call predecessors, (1524), 1414 states have call successors, (1524) [2021-11-17 05:13:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 7722 transitions. [2021-11-17 05:13:48,032 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 7722 transitions. Word has length 122 [2021-11-17 05:13:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:13:48,034 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 7722 transitions. [2021-11-17 05:13:48,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:13:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 7722 transitions. [2021-11-17 05:13:48,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-17 05:13:48,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:13:48,037 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-17 05:13:48,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 05:13:48,037 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:13:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:13:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1203194411, now seen corresponding path program 1 times [2021-11-17 05:13:48,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:13:48,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220070126] [2021-11-17 05:13:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:13:48,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:13:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:13:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:13:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:13:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:13:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:13:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:13:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 05:13:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 05:13:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 05:13:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:13:48,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:13:48,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220070126] [2021-11-17 05:13:48,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220070126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:13:48,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 05:13:48,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 05:13:48,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328145112] [2021-11-17 05:13:48,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:13:48,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 05:13:48,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:13:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 05:13:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 05:13:48,434 INFO L87 Difference]: Start difference. First operand 5487 states and 7722 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:13:57,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:13:57,129 INFO L93 Difference]: Finished difference Result 18067 states and 25992 transitions. [2021-11-17 05:13:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 05:13:57,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2021-11-17 05:13:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:13:57,213 INFO L225 Difference]: With dead ends: 18067 [2021-11-17 05:13:57,213 INFO L226 Difference]: Without dead ends: 12601 [2021-11-17 05:13:57,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-17 05:13:57,242 INFO L933 BasicCegarLoop]: 1965 mSDtfsCounter, 3794 mSDsluCounter, 6308 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 2483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4010 SdHoareTripleChecker+Valid, 8273 SdHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2483 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-17 05:13:57,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4010 Valid, 8273 Invalid, 6201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2483 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-17 05:13:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-11-17 05:13:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 10970. [2021-11-17 05:13:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 7461 states have (on average 1.2814636107760353) internal successors, (9561), 7653 states have internal predecessors, (9561), 2823 states have call successors, (2823), 654 states have call predecessors, (2823), 685 states have return successors, (3130), 2838 states have call predecessors, (3130), 2822 states have call successors, (3130) [2021-11-17 05:13:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 15514 transitions. [2021-11-17 05:13:57,794 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 15514 transitions. Word has length 123 [2021-11-17 05:13:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:13:57,795 INFO L470 AbstractCegarLoop]: Abstraction has 10970 states and 15514 transitions. [2021-11-17 05:13:57,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:13:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 15514 transitions. [2021-11-17 05:13:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-17 05:13:57,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:13:57,798 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-17 05:13:57,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 05:13:57,799 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:13:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:13:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -292898560, now seen corresponding path program 1 times [2021-11-17 05:13:57,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:13:57,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065401] [2021-11-17 05:13:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:13:57,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:13:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:13:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:13:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:13:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:13:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:13:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:13:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:13:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:13:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-17 05:13:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 05:13:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-17 05:13:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:13:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:13:58,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:13:58,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065401] [2021-11-17 05:13:58,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:13:58,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 05:13:58,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 05:13:58,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194109003] [2021-11-17 05:13:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:13:58,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 05:13:58,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:13:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 05:13:58,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-17 05:13:58,084 INFO L87 Difference]: Start difference. First operand 10970 states and 15514 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:14:07,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 05:14:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:14:11,337 INFO L93 Difference]: Finished difference Result 35652 states and 51556 transitions. [2021-11-17 05:14:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 05:14:11,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2021-11-17 05:14:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:14:11,467 INFO L225 Difference]: With dead ends: 35652 [2021-11-17 05:14:11,467 INFO L226 Difference]: Without dead ends: 24703 [2021-11-17 05:14:11,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-17 05:14:11,517 INFO L933 BasicCegarLoop]: 2689 mSDtfsCounter, 3171 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 4510 mSolverCounterSat, 1983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 10843 SdHoareTripleChecker+Invalid, 6493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1983 IncrementalHoareTripleChecker+Valid, 4510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-17 05:14:11,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3387 Valid, 10843 Invalid, 6493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1983 Valid, 4510 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-11-17 05:14:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2021-11-17 05:14:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 21519. [2021-11-17 05:14:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21519 states, 14619 states have (on average 1.2803201313359327) internal successors, (18717), 15011 states have internal predecessors, (18717), 5545 states have call successors, (5545), 1291 states have call predecessors, (5545), 1354 states have return successors, (6350), 5556 states have call predecessors, (6350), 5544 states have call successors, (6350) [2021-11-17 05:14:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21519 states to 21519 states and 30612 transitions. [2021-11-17 05:14:12,516 INFO L78 Accepts]: Start accepts. Automaton has 21519 states and 30612 transitions. Word has length 120 [2021-11-17 05:14:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:14:12,517 INFO L470 AbstractCegarLoop]: Abstraction has 21519 states and 30612 transitions. [2021-11-17 05:14:12,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-17 05:14:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 21519 states and 30612 transitions. [2021-11-17 05:14:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-17 05:14:12,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:14:12,521 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-17 05:14:12,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 05:14:12,522 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:14:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:14:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 55159783, now seen corresponding path program 1 times [2021-11-17 05:14:12,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:14:12,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988049642] [2021-11-17 05:14:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:12,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:14:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:14:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:14:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:14:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:14:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:14:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:14:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 05:14:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 05:14:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 05:14:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 05:14:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-17 05:14:12,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:14:12,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988049642] [2021-11-17 05:14:12,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988049642] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 05:14:12,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848677321] [2021-11-17 05:14:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:12,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:14:12,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:14:12,888 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) [2021-11-17 05:14:12,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 05:14:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:13,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 05:14:13,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 05:14:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:14:13,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 05:14:13,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848677321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:14:13,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 05:14:13,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-11-17 05:14:13,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887951781] [2021-11-17 05:14:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:14:13,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 05:14:13,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:14:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 05:14:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-17 05:14:13,817 INFO L87 Difference]: Start difference. First operand 21519 states and 30612 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:14:14,856 INFO L93 Difference]: Finished difference Result 53797 states and 76670 transitions. [2021-11-17 05:14:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 05:14:14,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 133 [2021-11-17 05:14:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:14:15,027 INFO L225 Difference]: With dead ends: 53797 [2021-11-17 05:14:15,027 INFO L226 Difference]: Without dead ends: 32299 [2021-11-17 05:14:15,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-11-17 05:14:15,122 INFO L933 BasicCegarLoop]: 2926 mSDtfsCounter, 1918 mSDsluCounter, 13568 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16494 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 [2021-11-17 05:14:15,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16494 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 05:14:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32299 states. [2021-11-17 05:14:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32299 to 32150. [2021-11-17 05:14:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 21851 states have (on average 1.2807651823715163) internal successors, (27986), 22443 states have internal predecessors, (27986), 8267 states have call successors, (8267), 1928 states have call predecessors, (8267), 2031 states have return successors, (9658), 8282 states have call predecessors, (9658), 8266 states have call successors, (9658) [2021-11-17 05:14:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 45911 transitions. [2021-11-17 05:14:16,503 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 45911 transitions. Word has length 133 [2021-11-17 05:14:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:14:16,504 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 45911 transitions. [2021-11-17 05:14:16,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 45911 transitions. [2021-11-17 05:14:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-17 05:14:16,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:14:16,514 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 05:14:16,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-17 05:14:16,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-17 05:14:16,719 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:14:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:14:16,720 INFO L85 PathProgramCache]: Analyzing trace with hash 484807700, now seen corresponding path program 1 times [2021-11-17 05:14:16,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:14:16,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553245317] [2021-11-17 05:14:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:16,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:14:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:14:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:14:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:14:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:14:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:14:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:14:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 05:14:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-17 05:14:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 05:14:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 05:14:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:14:17,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:14:17,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553245317] [2021-11-17 05:14:17,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553245317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 05:14:17,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138353903] [2021-11-17 05:14:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:17,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:14:17,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:14:17,040 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) [2021-11-17 05:14:17,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 05:14:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:17,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 05:14:17,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 05:14:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:14:18,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 05:14:18,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138353903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:14:18,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 05:14:18,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-17 05:14:18,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903464037] [2021-11-17 05:14:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:14:18,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 05:14:18,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:14:18,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 05:14:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-17 05:14:18,011 INFO L87 Difference]: Start difference. First operand 32150 states and 45911 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:14:19,209 INFO L93 Difference]: Finished difference Result 75112 states and 107314 transitions. [2021-11-17 05:14:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 05:14:19,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 134 [2021-11-17 05:14:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:14:19,420 INFO L225 Difference]: With dead ends: 75112 [2021-11-17 05:14:19,420 INFO L226 Difference]: Without dead ends: 42983 [2021-11-17 05:14:19,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-17 05:14:19,536 INFO L933 BasicCegarLoop]: 3048 mSDtfsCounter, 1918 mSDsluCounter, 14044 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17092 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 [2021-11-17 05:14:19,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 17092 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 05:14:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42983 states. [2021-11-17 05:14:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42983 to 42813. [2021-11-17 05:14:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42813 states, 29103 states have (on average 1.2807957942480157) internal successors, (37275), 29911 states have internal predecessors, (37275), 10989 states have call successors, (10989), 2565 states have call predecessors, (10989), 2720 states have return successors, (12978), 11004 states have call predecessors, (12978), 10988 states have call successors, (12978) [2021-11-17 05:14:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42813 states to 42813 states and 61242 transitions. [2021-11-17 05:14:21,682 INFO L78 Accepts]: Start accepts. Automaton has 42813 states and 61242 transitions. Word has length 134 [2021-11-17 05:14:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:14:21,696 INFO L470 AbstractCegarLoop]: Abstraction has 42813 states and 61242 transitions. [2021-11-17 05:14:21,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 42813 states and 61242 transitions. [2021-11-17 05:14:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-17 05:14:21,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:14:21,707 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 05:14:21,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 05:14:21,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-17 05:14:21,931 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:14:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:14:21,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1996562208, now seen corresponding path program 1 times [2021-11-17 05:14:21,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:14:21,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403131902] [2021-11-17 05:14:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:21,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:14:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:14:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:14:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:14:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:14:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:14:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:14:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 05:14:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 05:14:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 05:14:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 05:14:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:14:22,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:14:22,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403131902] [2021-11-17 05:14:22,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403131902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 05:14:22,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521413743] [2021-11-17 05:14:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:22,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:14:22,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:14:22,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 05:14:22,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 05:14:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:23,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 05:14:23,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 05:14:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:14:23,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 05:14:23,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521413743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:14:23,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 05:14:23,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-17 05:14:23,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197579296] [2021-11-17 05:14:23,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:14:23,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 05:14:23,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:14:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 05:14:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-17 05:14:23,516 INFO L87 Difference]: Start difference. First operand 42813 states and 61242 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:14:25,477 INFO L93 Difference]: Finished difference Result 96427 states and 137958 transitions. [2021-11-17 05:14:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 05:14:25,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2021-11-17 05:14:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:14:25,747 INFO L225 Difference]: With dead ends: 96427 [2021-11-17 05:14:25,747 INFO L226 Difference]: Without dead ends: 53635 [2021-11-17 05:14:25,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-17 05:14:25,904 INFO L933 BasicCegarLoop]: 3053 mSDtfsCounter, 1918 mSDsluCounter, 14064 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17117 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 05:14:25,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 17117 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 05:14:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53635 states. [2021-11-17 05:14:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53635 to 42835. [2021-11-17 05:14:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42835 states, 29119 states have (on average 1.280641505546207) internal successors, (37291), 29929 states have internal predecessors, (37291), 10989 states have call successors, (10989), 2565 states have call predecessors, (10989), 2726 states have return successors, (12987), 11008 states have call predecessors, (12987), 10988 states have call successors, (12987) [2021-11-17 05:14:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42835 states to 42835 states and 61267 transitions. [2021-11-17 05:14:27,592 INFO L78 Accepts]: Start accepts. Automaton has 42835 states and 61267 transitions. Word has length 135 [2021-11-17 05:14:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:14:27,593 INFO L470 AbstractCegarLoop]: Abstraction has 42835 states and 61267 transitions. [2021-11-17 05:14:27,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 42835 states and 61267 transitions. [2021-11-17 05:14:27,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-17 05:14:27,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:14:27,602 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 05:14:27,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 05:14:27,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:14:27,815 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:14:27,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:14:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -230204179, now seen corresponding path program 1 times [2021-11-17 05:14:27,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:14:27,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556333164] [2021-11-17 05:14:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:27,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:14:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:14:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:14:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:14:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:14:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:14:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:14:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-17 05:14:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 05:14:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 05:14:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 05:14:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:14:28,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:14:28,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556333164] [2021-11-17 05:14:28,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556333164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 05:14:28,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516212833] [2021-11-17 05:14:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:28,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:14:28,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:14:28,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 05:14:28,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 05:14:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:28,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 05:14:28,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 05:14:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-17 05:14:29,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 05:14:29,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516212833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:14:29,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 05:14:29,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-17 05:14:29,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114751664] [2021-11-17 05:14:29,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:14:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 05:14:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:14:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 05:14:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-17 05:14:29,242 INFO L87 Difference]: Start difference. First operand 42835 states and 61267 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:14:30,703 INFO L93 Difference]: Finished difference Result 96457 states and 137991 transitions. [2021-11-17 05:14:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 05:14:30,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 136 [2021-11-17 05:14:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:14:30,932 INFO L225 Difference]: With dead ends: 96457 [2021-11-17 05:14:30,932 INFO L226 Difference]: Without dead ends: 53643 [2021-11-17 05:14:31,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-17 05:14:31,066 INFO L933 BasicCegarLoop]: 3048 mSDtfsCounter, 1918 mSDsluCounter, 14044 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17092 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 [2021-11-17 05:14:31,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 17092 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 05:14:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53643 states. [2021-11-17 05:14:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53643 to 42848. [2021-11-17 05:14:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42848 states, 29129 states have (on average 1.2805451611795804) internal successors, (37301), 29938 states have internal predecessors, (37301), 10989 states have call successors, (10989), 2565 states have call predecessors, (10989), 2729 states have return successors, (12990), 11012 states have call predecessors, (12990), 10988 states have call successors, (12990) [2021-11-17 05:14:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42848 states to 42848 states and 61280 transitions. [2021-11-17 05:14:32,554 INFO L78 Accepts]: Start accepts. Automaton has 42848 states and 61280 transitions. Word has length 136 [2021-11-17 05:14:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:14:32,555 INFO L470 AbstractCegarLoop]: Abstraction has 42848 states and 61280 transitions. [2021-11-17 05:14:32,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 05:14:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 42848 states and 61280 transitions. [2021-11-17 05:14:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-17 05:14:32,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:14:32,566 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 05:14:32,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 05:14:32,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:14:32,779 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:14:32,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:14:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1071196633, now seen corresponding path program 1 times [2021-11-17 05:14:32,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:14:32,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391972164] [2021-11-17 05:14:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:32,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:14:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:14:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:14:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:14:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:14:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:14:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:14:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 05:14:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 05:14:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 05:14:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 05:14:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-17 05:14:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-17 05:14:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 05:14:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 05:14:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-17 05:14:33,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:14:33,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391972164] [2021-11-17 05:14:33,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391972164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 05:14:33,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 05:14:33,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 05:14:33,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253882931] [2021-11-17 05:14:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 05:14:33,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 05:14:33,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:14:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 05:14:33,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 05:14:33,058 INFO L87 Difference]: Start difference. First operand 42848 states and 61280 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 05:14:39,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:14:39,095 INFO L93 Difference]: Finished difference Result 59568 states and 84848 transitions. [2021-11-17 05:14:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 05:14:39,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2021-11-17 05:14:39,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:14:39,402 INFO L225 Difference]: With dead ends: 59568 [2021-11-17 05:14:39,402 INFO L226 Difference]: Without dead ends: 59565 [2021-11-17 05:14:39,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 05:14:39,423 INFO L933 BasicCegarLoop]: 1885 mSDtfsCounter, 2382 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 1479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1479 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-17 05:14:39,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 4032 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1479 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-17 05:14:39,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59565 states. [2021-11-17 05:14:40,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59565 to 53178. [2021-11-17 05:14:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53178 states, 35623 states have (on average 1.2636218173651854) internal successors, (45014), 36461 states have internal predecessors, (45014), 13768 states have call successors, (13768), 3622 states have call predecessors, (13768), 3786 states have return successors, (15769), 13791 states have call predecessors, (15769), 13767 states have call successors, (15769) [2021-11-17 05:14:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53178 states to 53178 states and 74551 transitions. [2021-11-17 05:14:41,114 INFO L78 Accepts]: Start accepts. Automaton has 53178 states and 74551 transitions. Word has length 159 [2021-11-17 05:14:41,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:14:41,114 INFO L470 AbstractCegarLoop]: Abstraction has 53178 states and 74551 transitions. [2021-11-17 05:14:41,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 05:14:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 53178 states and 74551 transitions. [2021-11-17 05:14:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-17 05:14:41,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:14:41,135 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 05:14:41,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 05:14:41,135 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:14:41,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:14:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1871562796, now seen corresponding path program 1 times [2021-11-17 05:14:41,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:14:41,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028057118] [2021-11-17 05:14:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:41,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:14:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:14:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:14:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:14:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:14:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:14:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:14:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:14:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 05:14:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 05:14:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 05:14:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 05:14:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-17 05:14:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 05:14:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:14:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-17 05:14:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 05:14:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-17 05:14:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-17 05:14:41,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:14:41,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028057118] [2021-11-17 05:14:41,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028057118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 05:14:41,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856434120] [2021-11-17 05:14:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:14:41,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:14:41,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:14:41,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 05:14:41,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 05:14:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:14:42,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-17 05:14:42,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 05:14:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-17 05:14:42,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 05:14:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-17 05:14:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856434120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 05:14:43,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 05:14:43,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-17 05:14:43,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191754362] [2021-11-17 05:14:43,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 05:14:43,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-17 05:14:43,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:14:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-17 05:14:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-17 05:14:43,163 INFO L87 Difference]: Start difference. First operand 53178 states and 74551 transitions. Second operand has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-17 05:15:26,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 05:15:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:15:51,692 INFO L93 Difference]: Finished difference Result 157238 states and 223224 transitions. [2021-11-17 05:15:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-17 05:15:51,693 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) Word has length 182 [2021-11-17 05:15:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:15:52,173 INFO L225 Difference]: With dead ends: 157238 [2021-11-17 05:15:52,174 INFO L226 Difference]: Without dead ends: 103885 [2021-11-17 05:15:52,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7603 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3129, Invalid=17177, Unknown=0, NotChecked=0, Total=20306 [2021-11-17 05:15:52,343 INFO L933 BasicCegarLoop]: 3576 mSDtfsCounter, 15014 mSDsluCounter, 26489 mSDsCounter, 0 mSdLazyCounter, 49688 mSolverCounterSat, 12492 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15500 SdHoareTripleChecker+Valid, 30065 SdHoareTripleChecker+Invalid, 62181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 12492 IncrementalHoareTripleChecker+Valid, 49688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.2s IncrementalHoareTripleChecker+Time [2021-11-17 05:15:52,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15500 Valid, 30065 Invalid, 62181 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [12492 Valid, 49688 Invalid, 1 Unknown, 0 Unchecked, 59.2s Time] [2021-11-17 05:15:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103885 states. [2021-11-17 05:15:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103885 to 91676. [2021-11-17 05:15:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91676 states, 61377 states have (on average 1.262834612314059) internal successors, (77509), 62805 states have internal predecessors, (77509), 23793 states have call successors, (23793), 6255 states have call predecessors, (23793), 6505 states have return successors, (27018), 23799 states have call predecessors, (27018), 23792 states have call successors, (27018) [2021-11-17 05:15:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91676 states to 91676 states and 128320 transitions. [2021-11-17 05:15:56,551 INFO L78 Accepts]: Start accepts. Automaton has 91676 states and 128320 transitions. Word has length 182 [2021-11-17 05:15:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:15:56,552 INFO L470 AbstractCegarLoop]: Abstraction has 91676 states and 128320 transitions. [2021-11-17 05:15:56,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-17 05:15:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 91676 states and 128320 transitions. [2021-11-17 05:15:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-17 05:15:56,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:15:56,579 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 05:15:56,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 05:15:56,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-17 05:15:56,796 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:15:56,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:15:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1627770104, now seen corresponding path program 1 times [2021-11-17 05:15:56,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:15:56,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145941323] [2021-11-17 05:15:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:15:56,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:15:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:15:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:15:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:15:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:15:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:15:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:15:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:15:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:15:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:15:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:15:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:15:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:15:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:15:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:15:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 05:15:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 05:15:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 05:15:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-17 05:15:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 05:15:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 05:15:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:15:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-17 05:15:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 05:15:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 05:15:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-17 05:15:57,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:15:57,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145941323] [2021-11-17 05:15:57,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145941323] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 05:15:57,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017016064] [2021-11-17 05:15:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:15:57,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:15:57,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:15:57,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 05:15:57,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 05:15:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:15:57,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-17 05:15:57,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 05:15:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-17 05:15:58,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 05:15:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-17 05:15:58,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017016064] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 05:15:58,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 05:15:58,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-17 05:15:58,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107939085] [2021-11-17 05:15:58,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 05:15:58,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-17 05:15:58,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:15:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-17 05:15:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-17 05:15:58,487 INFO L87 Difference]: Start difference. First operand 91676 states and 128320 transitions. Second operand has 24 states, 24 states have (on average 6.541666666666667) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-17 05:16:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:16:55,184 INFO L93 Difference]: Finished difference Result 265150 states and 375079 transitions. [2021-11-17 05:16:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-17 05:16:55,184 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.541666666666667) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) Word has length 183 [2021-11-17 05:16:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:16:56,124 INFO L225 Difference]: With dead ends: 265150 [2021-11-17 05:16:56,125 INFO L226 Difference]: Without dead ends: 173173 [2021-11-17 05:16:56,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7763 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3129, Invalid=17177, Unknown=0, NotChecked=0, Total=20306 [2021-11-17 05:16:56,436 INFO L933 BasicCegarLoop]: 3169 mSDtfsCounter, 18829 mSDsluCounter, 22217 mSDsCounter, 0 mSdLazyCounter, 42052 mSolverCounterSat, 16191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19312 SdHoareTripleChecker+Valid, 25386 SdHoareTripleChecker+Invalid, 58243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16191 IncrementalHoareTripleChecker+Valid, 42052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.9s IncrementalHoareTripleChecker+Time [2021-11-17 05:16:56,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19312 Valid, 25386 Invalid, 58243 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16191 Valid, 42052 Invalid, 0 Unknown, 0 Unchecked, 43.9s Time] [2021-11-17 05:16:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173173 states. [2021-11-17 05:17:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173173 to 150479. [2021-11-17 05:17:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150479 states, 100684 states have (on average 1.261948273807159) internal successors, (127058), 102983 states have internal predecessors, (127058), 39104 states have call successors, (39104), 10322 states have call predecessors, (39104), 10690 states have return successors, (43920), 39088 states have call predecessors, (43920), 39103 states have call successors, (43920) [2021-11-17 05:17:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150479 states to 150479 states and 210082 transitions. [2021-11-17 05:17:04,050 INFO L78 Accepts]: Start accepts. Automaton has 150479 states and 210082 transitions. Word has length 183 [2021-11-17 05:17:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 05:17:04,051 INFO L470 AbstractCegarLoop]: Abstraction has 150479 states and 210082 transitions. [2021-11-17 05:17:04,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.541666666666667) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-17 05:17:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 150479 states and 210082 transitions. [2021-11-17 05:17:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-17 05:17:04,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 05:17:04,082 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 05:17:04,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-17 05:17:04,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:17:04,303 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 05:17:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 05:17:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1159521531, now seen corresponding path program 1 times [2021-11-17 05:17:04,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 05:17:04,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918488429] [2021-11-17 05:17:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:17:04,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 05:17:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 05:17:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:17:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:17:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 05:17:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:17:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:17:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 05:17:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:17:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:17:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 05:17:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:17:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 05:17:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 05:17:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 05:17:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-17 05:17:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 05:17:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 05:17:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 05:17:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 05:17:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 05:17:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 05:17:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-17 05:17:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-17 05:17:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 05:17:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-17 05:17:05,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 05:17:05,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918488429] [2021-11-17 05:17:05,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918488429] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 05:17:05,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731805720] [2021-11-17 05:17:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 05:17:05,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 05:17:05,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 05:17:05,028 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 05:17:05,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 05:17:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 05:17:05,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-17 05:17:05,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 05:17:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-17 05:17:06,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 05:17:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-17 05:17:06,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731805720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 05:17:06,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 05:17:06,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-17 05:17:06,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158655388] [2021-11-17 05:17:06,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 05:17:06,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-17 05:17:06,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 05:17:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-17 05:17:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-17 05:17:06,476 INFO L87 Difference]: Start difference. First operand 150479 states and 210082 transitions. Second operand has 24 states, 24 states have (on average 6.625) internal successors, (159), 15 states have internal predecessors, (159), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-17 05:18:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 05:18:00,256 INFO L93 Difference]: Finished difference Result 381168 states and 536699 transitions. [2021-11-17 05:18:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-17 05:18:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.625) internal successors, (159), 15 states have internal predecessors, (159), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) Word has length 184 [2021-11-17 05:18:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 05:18:01,529 INFO L225 Difference]: With dead ends: 381168 [2021-11-17 05:18:01,530 INFO L226 Difference]: Without dead ends: 230255 [2021-11-17 05:18:02,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 422 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7775 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3129, Invalid=17177, Unknown=0, NotChecked=0, Total=20306 [2021-11-17 05:18:02,326 INFO L933 BasicCegarLoop]: 3096 mSDtfsCounter, 20074 mSDsluCounter, 22970 mSDsCounter, 0 mSdLazyCounter, 45646 mSolverCounterSat, 18251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20555 SdHoareTripleChecker+Valid, 26066 SdHoareTripleChecker+Invalid, 63897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18251 IncrementalHoareTripleChecker+Valid, 45646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2021-11-17 05:18:02,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20555 Valid, 26066 Invalid, 63897 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18251 Valid, 45646 Invalid, 0 Unknown, 0 Unchecked, 38.4s Time] [2021-11-17 05:18:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230255 states.