./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.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 d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:24:58,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:24:58,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:24:58,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:24:58,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:24:58,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:24:58,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:24:58,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:24:58,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:24:58,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:24:58,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:24:58,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:24:58,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:24:58,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:24:58,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:24:58,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:24:58,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:24:58,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:24:58,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:24:58,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:24:58,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:24:58,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:24:58,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:24:58,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:24:58,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:24:58,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:24:58,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:24:58,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:24:58,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:24:58,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:24:58,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:24:58,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:24:58,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:24:58,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:24:58,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:24:58,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:24:58,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:24:58,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:24:58,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:24:58,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:24:58,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:24:58,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:24:58,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:24:58,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:24:58,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:24:58,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:24:58,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:24:58,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:24:58,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:24:58,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:24:58,823 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:24:58,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:24:58,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:24:58,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:24:58,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:24:58,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:24:58,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:24:58,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:24:58,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:24:58,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:24:58,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:24:58,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:24:58,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:24:58,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:24:58,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:24:58,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:24:58,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:24:58,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:24:58,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:24:58,827 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:24:58,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:24:58,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:24:58,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 [2021-12-28 03:24:59,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:24:59,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:24:59,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:24:59,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:24:59,090 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:24:59,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2021-12-28 03:24:59,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf411c3b/f51d5d8199f24b89a187807ae76886e1/FLAG1eb170eac [2021-12-28 03:24:59,728 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:24:59,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2021-12-28 03:24:59,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf411c3b/f51d5d8199f24b89a187807ae76886e1/FLAG1eb170eac [2021-12-28 03:25:00,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf411c3b/f51d5d8199f24b89a187807ae76886e1 [2021-12-28 03:25:00,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:25:00,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:25:00,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:25:00,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:25:00,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:25:00,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:25:00" (1/1) ... [2021-12-28 03:25:00,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6feee621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:00, skipping insertion in model container [2021-12-28 03:25:00,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:25:00" (1/1) ... [2021-12-28 03:25:00,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:25:00,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:25:00,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2021-12-28 03:25:00,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:25:00,992 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:25:01,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2021-12-28 03:25:01,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:25:01,220 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:25:01,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01 WrapperNode [2021-12-28 03:25:01,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:25:01,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:25:01,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:25:01,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:25:01,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,322 INFO L137 Inliner]: procedures = 81, calls = 494, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 1672 [2021-12-28 03:25:01,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:25:01,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:25:01,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:25:01,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:25:01,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:25:01,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:25:01,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:25:01,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:25:01,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (1/1) ... [2021-12-28 03:25:01,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:25:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:01,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:25:01,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:25:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:25:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2021-12-28 03:25:01,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2021-12-28 03:25:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:25:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2021-12-28 03:25:01,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2021-12-28 03:25:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:25:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:25:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 03:25:01,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 03:25:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 03:25:01,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 03:25:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:25:01,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:25:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-28 03:25:01,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-28 03:25:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:25:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:25:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:25:01,514 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:25:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:25:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-28 03:25:01,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-28 03:25:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-28 03:25:01,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-28 03:25:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:25:01,515 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:25:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2021-12-28 03:25:01,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2021-12-28 03:25:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-28 03:25:01,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-28 03:25:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-28 03:25:01,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-28 03:25:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:25:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:25:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:25:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:25:01,711 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:25:01,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:25:01,717 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-28 03:25:01,797 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-28 03:25:01,798 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-28 03:25:01,907 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-28 03:25:01,935 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-28 03:25:01,938 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-28 03:25:01,946 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-28 03:25:02,595 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume !false; [2021-12-28 03:25:02,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##73: assume false; [2021-12-28 03:25:02,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume false; [2021-12-28 03:25:02,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##259: assume !false; [2021-12-28 03:25:02,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-12-28 03:25:02,596 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-12-28 03:25:02,600 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:25:02,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:25:02,611 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-12-28 03:25:02,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:25:02 BoogieIcfgContainer [2021-12-28 03:25:02,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:25:02,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:25:02,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:25:02,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:25:02,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:25:00" (1/3) ... [2021-12-28 03:25:02,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4877adcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:25:02, skipping insertion in model container [2021-12-28 03:25:02,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:25:01" (2/3) ... [2021-12-28 03:25:02,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4877adcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:25:02, skipping insertion in model container [2021-12-28 03:25:02,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:25:02" (3/3) ... [2021-12-28 03:25:02,635 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2021-12-28 03:25:02,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:25:02,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:25:02,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:25:02,685 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:25:02,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:25:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 262 states have (on average 1.5076335877862594) internal successors, (395), 272 states have internal predecessors, (395), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-28 03:25:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:25:02,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:02,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:02,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:02,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:02,721 INFO L85 PathProgramCache]: Analyzing trace with hash -248243768, now seen corresponding path program 1 times [2021-12-28 03:25:02,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:02,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833291324] [2021-12-28 03:25:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:02,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:25:03,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:03,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833291324] [2021-12-28 03:25:03,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833291324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:03,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:03,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:25:03,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523976345] [2021-12-28 03:25:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:03,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:25:03,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:25:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:25:03,274 INFO L87 Difference]: Start difference. First operand has 301 states, 262 states have (on average 1.5076335877862594) internal successors, (395), 272 states have internal predecessors, (395), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:25:04,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:04,040 INFO L93 Difference]: Finished difference Result 845 states and 1261 transitions. [2021-12-28 03:25:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:25:04,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 03:25:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:04,053 INFO L225 Difference]: With dead ends: 845 [2021-12-28 03:25:04,053 INFO L226 Difference]: Without dead ends: 538 [2021-12-28 03:25:04,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:04,059 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 460 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:04,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1275 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:25:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-28 03:25:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 528. [2021-12-28 03:25:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 469 states have (on average 1.3411513859275053) internal successors, (629), 478 states have internal predecessors, (629), 38 states have call successors, (38), 21 states have call predecessors, (38), 20 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-28 03:25:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 702 transitions. [2021-12-28 03:25:04,116 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 702 transitions. Word has length 18 [2021-12-28 03:25:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:04,116 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 702 transitions. [2021-12-28 03:25:04,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:25:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 702 transitions. [2021-12-28 03:25:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:25:04,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:04,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:04,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:25:04,121 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash -835049782, now seen corresponding path program 1 times [2021-12-28 03:25:04,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:04,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031264972] [2021-12-28 03:25:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:04,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:25:04,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:04,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031264972] [2021-12-28 03:25:04,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031264972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:04,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:04,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:25:04,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835431793] [2021-12-28 03:25:04,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:04,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:25:04,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:25:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:25:04,280 INFO L87 Difference]: Start difference. First operand 528 states and 702 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:25:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:04,694 INFO L93 Difference]: Finished difference Result 1543 states and 2060 transitions. [2021-12-28 03:25:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:25:04,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 03:25:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:04,699 INFO L225 Difference]: With dead ends: 1543 [2021-12-28 03:25:04,699 INFO L226 Difference]: Without dead ends: 1033 [2021-12-28 03:25:04,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:25:04,702 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 470 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:04,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 908 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:25:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-12-28 03:25:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1020. [2021-12-28 03:25:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 913 states have (on average 1.343921139101862) internal successors, (1227), 926 states have internal predecessors, (1227), 69 states have call successors, (69), 38 states have call predecessors, (69), 37 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-28 03:25:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1362 transitions. [2021-12-28 03:25:04,758 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1362 transitions. Word has length 18 [2021-12-28 03:25:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:04,758 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1362 transitions. [2021-12-28 03:25:04,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:25:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1362 transitions. [2021-12-28 03:25:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:25:04,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:04,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:04,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:25:04,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:04,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash -116851219, now seen corresponding path program 1 times [2021-12-28 03:25:04,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:04,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111358280] [2021-12-28 03:25:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:04,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:25:04,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:04,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111358280] [2021-12-28 03:25:04,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111358280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:04,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:04,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:25:04,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527104165] [2021-12-28 03:25:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:04,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:25:04,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:25:04,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:25:04,867 INFO L87 Difference]: Start difference. First operand 1020 states and 1362 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:25:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:05,119 INFO L93 Difference]: Finished difference Result 1022 states and 1363 transitions. [2021-12-28 03:25:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:25:05,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-28 03:25:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:05,123 INFO L225 Difference]: With dead ends: 1022 [2021-12-28 03:25:05,123 INFO L226 Difference]: Without dead ends: 1001 [2021-12-28 03:25:05,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:25:05,124 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 421 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:05,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 595 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:25:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-12-28 03:25:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2021-12-28 03:25:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 902 states have (on average 1.3414634146341464) internal successors, (1210), 912 states have internal predecessors, (1210), 64 states have call successors, (64), 35 states have call predecessors, (64), 34 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-28 03:25:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1336 transitions. [2021-12-28 03:25:05,150 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1336 transitions. Word has length 19 [2021-12-28 03:25:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:05,150 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1336 transitions. [2021-12-28 03:25:05,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 03:25:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1336 transitions. [2021-12-28 03:25:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-28 03:25:05,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:05,154 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:05,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:25:05,155 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:05,155 INFO L85 PathProgramCache]: Analyzing trace with hash -470649452, now seen corresponding path program 1 times [2021-12-28 03:25:05,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:05,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193634295] [2021-12-28 03:25:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:05,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:25:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:25:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:05,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:05,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193634295] [2021-12-28 03:25:05,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193634295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:05,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:05,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:25:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208620299] [2021-12-28 03:25:05,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:05,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:05,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:25:05,373 INFO L87 Difference]: Start difference. First operand 1001 states and 1336 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-28 03:25:06,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:06,045 INFO L93 Difference]: Finished difference Result 2037 states and 2716 transitions. [2021-12-28 03:25:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:25:06,046 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), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 76 [2021-12-28 03:25:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:06,051 INFO L225 Difference]: With dead ends: 2037 [2021-12-28 03:25:06,052 INFO L226 Difference]: Without dead ends: 1057 [2021-12-28 03:25:06,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:25:06,055 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 573 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:06,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1446 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:25:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-12-28 03:25:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1001. [2021-12-28 03:25:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 902 states have (on average 1.3392461197339247) internal successors, (1208), 912 states have internal predecessors, (1208), 64 states have call successors, (64), 35 states have call predecessors, (64), 34 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-28 03:25:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1334 transitions. [2021-12-28 03:25:06,082 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1334 transitions. Word has length 76 [2021-12-28 03:25:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:06,083 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1334 transitions. [2021-12-28 03:25:06,083 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), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-28 03:25:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1334 transitions. [2021-12-28 03:25:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-28 03:25:06,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:06,085 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:06,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:25:06,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash -26748778, now seen corresponding path program 1 times [2021-12-28 03:25:06,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160112089] [2021-12-28 03:25:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:06,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:25:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:25:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:06,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:06,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160112089] [2021-12-28 03:25:06,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160112089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:06,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:06,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:25:06,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328042398] [2021-12-28 03:25:06,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:06,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:06,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:06,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:25:06,280 INFO L87 Difference]: Start difference. First operand 1001 states and 1334 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-28 03:25:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:06,943 INFO L93 Difference]: Finished difference Result 2033 states and 2706 transitions. [2021-12-28 03:25:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:25:06,944 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), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 76 [2021-12-28 03:25:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:06,947 INFO L225 Difference]: With dead ends: 2033 [2021-12-28 03:25:06,948 INFO L226 Difference]: Without dead ends: 1053 [2021-12-28 03:25:06,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:25:06,950 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 564 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:06,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1449 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:25:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-12-28 03:25:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 997. [2021-12-28 03:25:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 900 states have (on average 1.3377777777777777) internal successors, (1204), 910 states have internal predecessors, (1204), 62 states have call successors, (62), 35 states have call predecessors, (62), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-28 03:25:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1326 transitions. [2021-12-28 03:25:07,008 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1326 transitions. Word has length 76 [2021-12-28 03:25:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:07,008 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1326 transitions. [2021-12-28 03:25:07,008 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), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-28 03:25:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1326 transitions. [2021-12-28 03:25:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-28 03:25:07,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:07,010 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:07,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:25:07,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash -481270382, now seen corresponding path program 1 times [2021-12-28 03:25:07,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:07,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133323979] [2021-12-28 03:25:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:07,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:25:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:25:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:07,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:07,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133323979] [2021-12-28 03:25:07,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133323979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:07,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:07,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:25:07,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254993775] [2021-12-28 03:25:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:07,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:25:07,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:25:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:25:07,264 INFO L87 Difference]: Start difference. First operand 997 states and 1326 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:25:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:07,989 INFO L93 Difference]: Finished difference Result 2989 states and 4048 transitions. [2021-12-28 03:25:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:25:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 76 [2021-12-28 03:25:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:07,997 INFO L225 Difference]: With dead ends: 2989 [2021-12-28 03:25:07,998 INFO L226 Difference]: Without dead ends: 2013 [2021-12-28 03:25:08,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:08,001 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 654 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:08,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 2760 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:25:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-12-28 03:25:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 973. [2021-12-28 03:25:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 885 states have (on average 1.335593220338983) internal successors, (1182), 891 states have internal predecessors, (1182), 55 states have call successors, (55), 33 states have call predecessors, (55), 32 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-28 03:25:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1290 transitions. [2021-12-28 03:25:08,083 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1290 transitions. Word has length 76 [2021-12-28 03:25:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:08,083 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1290 transitions. [2021-12-28 03:25:08,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:25:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1290 transitions. [2021-12-28 03:25:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 03:25:08,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:08,095 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:08,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:25:08,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1149604904, now seen corresponding path program 1 times [2021-12-28 03:25:08,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:08,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604146373] [2021-12-28 03:25:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:08,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:25:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:25:08,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:08,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604146373] [2021-12-28 03:25:08,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604146373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:08,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:08,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:25:08,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108840466] [2021-12-28 03:25:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:08,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:25:08,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:25:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:25:08,349 INFO L87 Difference]: Start difference. First operand 973 states and 1290 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:25:09,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:09,075 INFO L93 Difference]: Finished difference Result 2228 states and 3006 transitions. [2021-12-28 03:25:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:25:09,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2021-12-28 03:25:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:09,082 INFO L225 Difference]: With dead ends: 2228 [2021-12-28 03:25:09,082 INFO L226 Difference]: Without dead ends: 1727 [2021-12-28 03:25:09,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:25:09,086 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 389 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 3974 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:09,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 3974 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:25:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-12-28 03:25:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1001. [2021-12-28 03:25:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 905 states have (on average 1.3281767955801105) internal successors, (1202), 911 states have internal predecessors, (1202), 55 states have call successors, (55), 33 states have call predecessors, (55), 40 states have return successors, (69), 60 states have call predecessors, (69), 53 states have call successors, (69) [2021-12-28 03:25:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1326 transitions. [2021-12-28 03:25:09,148 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1326 transitions. Word has length 73 [2021-12-28 03:25:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:09,148 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1326 transitions. [2021-12-28 03:25:09,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:25:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1326 transitions. [2021-12-28 03:25:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 03:25:09,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:09,150 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:09,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:25:09,151 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1404341449, now seen corresponding path program 1 times [2021-12-28 03:25:09,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:09,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494527804] [2021-12-28 03:25:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:09,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:09,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:25:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:25:09,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:09,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494527804] [2021-12-28 03:25:09,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494527804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:09,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:09,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:25:09,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804872375] [2021-12-28 03:25:09,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:09,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:25:09,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:09,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:25:09,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:25:09,381 INFO L87 Difference]: Start difference. First operand 1001 states and 1326 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:25:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:10,557 INFO L93 Difference]: Finished difference Result 2242 states and 3020 transitions. [2021-12-28 03:25:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 03:25:10,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2021-12-28 03:25:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:10,566 INFO L225 Difference]: With dead ends: 2242 [2021-12-28 03:25:10,567 INFO L226 Difference]: Without dead ends: 1727 [2021-12-28 03:25:10,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:25:10,569 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1004 mSDsluCounter, 4958 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 5697 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:10,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 5697 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:25:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-12-28 03:25:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1001. [2021-12-28 03:25:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 905 states have (on average 1.3259668508287292) internal successors, (1200), 911 states have internal predecessors, (1200), 55 states have call successors, (55), 33 states have call predecessors, (55), 40 states have return successors, (69), 60 states have call predecessors, (69), 53 states have call successors, (69) [2021-12-28 03:25:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1324 transitions. [2021-12-28 03:25:10,616 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1324 transitions. Word has length 73 [2021-12-28 03:25:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:10,616 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1324 transitions. [2021-12-28 03:25:10,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-28 03:25:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1324 transitions. [2021-12-28 03:25:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-28 03:25:10,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:10,618 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:10,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:25:10,618 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash -264483951, now seen corresponding path program 1 times [2021-12-28 03:25:10,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:10,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298930024] [2021-12-28 03:25:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:10,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:25:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:25:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:10,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:10,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298930024] [2021-12-28 03:25:10,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298930024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:10,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:10,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:25:10,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011946816] [2021-12-28 03:25:10,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:10,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:25:10,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:25:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:25:10,779 INFO L87 Difference]: Start difference. First operand 1001 states and 1324 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-28 03:25:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:11,408 INFO L93 Difference]: Finished difference Result 1540 states and 2037 transitions. [2021-12-28 03:25:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:25:11,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 76 [2021-12-28 03:25:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:11,414 INFO L225 Difference]: With dead ends: 1540 [2021-12-28 03:25:11,414 INFO L226 Difference]: Without dead ends: 1537 [2021-12-28 03:25:11,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:25:11,416 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 980 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:11,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 2275 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2021-12-28 03:25:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1499. [2021-12-28 03:25:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1356 states have (on average 1.3281710914454277) internal successors, (1801), 1366 states have internal predecessors, (1801), 83 states have call successors, (83), 48 states have call predecessors, (83), 59 states have return successors, (108), 91 states have call predecessors, (108), 81 states have call successors, (108) [2021-12-28 03:25:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1992 transitions. [2021-12-28 03:25:11,492 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1992 transitions. Word has length 76 [2021-12-28 03:25:11,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:11,492 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1992 transitions. [2021-12-28 03:25:11,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-28 03:25:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1992 transitions. [2021-12-28 03:25:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-28 03:25:11,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:11,494 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:11,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:25:11,495 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash 299119202, now seen corresponding path program 1 times [2021-12-28 03:25:11,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:11,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996554463] [2021-12-28 03:25:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:11,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:25:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:25:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:25:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:11,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:11,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996554463] [2021-12-28 03:25:11,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996554463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:11,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:11,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:11,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938754081] [2021-12-28 03:25:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:11,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:11,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:11,680 INFO L87 Difference]: Start difference. First operand 1499 states and 1992 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:12,384 INFO L93 Difference]: Finished difference Result 4547 states and 6038 transitions. [2021-12-28 03:25:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:12,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 93 [2021-12-28 03:25:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:12,393 INFO L225 Difference]: With dead ends: 4547 [2021-12-28 03:25:12,393 INFO L226 Difference]: Without dead ends: 3057 [2021-12-28 03:25:12,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:12,397 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 805 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:12,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 1942 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-12-28 03:25:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2928. [2021-12-28 03:25:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2646 states have (on average 1.3344671201814058) internal successors, (3531), 2671 states have internal predecessors, (3531), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3912 transitions. [2021-12-28 03:25:12,524 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3912 transitions. Word has length 93 [2021-12-28 03:25:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:12,524 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 3912 transitions. [2021-12-28 03:25:12,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3912 transitions. [2021-12-28 03:25:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-28 03:25:12,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:12,528 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:12,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:25:12,528 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1102442664, now seen corresponding path program 1 times [2021-12-28 03:25:12,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:12,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787251300] [2021-12-28 03:25:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:12,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:25:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:25:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:25:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:12,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787251300] [2021-12-28 03:25:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787251300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:12,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:12,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:12,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202588142] [2021-12-28 03:25:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:12,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:12,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:12,728 INFO L87 Difference]: Start difference. First operand 2928 states and 3912 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:13,498 INFO L93 Difference]: Finished difference Result 5994 states and 7973 transitions. [2021-12-28 03:25:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:13,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2021-12-28 03:25:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:13,508 INFO L225 Difference]: With dead ends: 5994 [2021-12-28 03:25:13,508 INFO L226 Difference]: Without dead ends: 3075 [2021-12-28 03:25:13,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:13,514 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 804 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:13,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1942 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-12-28 03:25:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2931. [2021-12-28 03:25:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2649 states have (on average 1.332955832389581) internal successors, (3531), 2674 states have internal predecessors, (3531), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3912 transitions. [2021-12-28 03:25:13,639 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3912 transitions. Word has length 94 [2021-12-28 03:25:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:13,639 INFO L470 AbstractCegarLoop]: Abstraction has 2931 states and 3912 transitions. [2021-12-28 03:25:13,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3912 transitions. [2021-12-28 03:25:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-28 03:25:13,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:13,643 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:13,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:25:13,644 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1030544549, now seen corresponding path program 1 times [2021-12-28 03:25:13,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:13,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425591407] [2021-12-28 03:25:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:13,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:25:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:25:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:25:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:25:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:13,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425591407] [2021-12-28 03:25:13,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425591407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:13,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:13,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:13,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692785571] [2021-12-28 03:25:13,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:13,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:13,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:13,837 INFO L87 Difference]: Start difference. First operand 2931 states and 3912 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:14,557 INFO L93 Difference]: Finished difference Result 5994 states and 7967 transitions. [2021-12-28 03:25:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 95 [2021-12-28 03:25:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:14,566 INFO L225 Difference]: With dead ends: 5994 [2021-12-28 03:25:14,567 INFO L226 Difference]: Without dead ends: 3072 [2021-12-28 03:25:14,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:14,572 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 798 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:14,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 1942 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-12-28 03:25:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2925. [2021-12-28 03:25:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2643 states have (on average 1.3325766174801361) internal successors, (3522), 2668 states have internal predecessors, (3522), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3903 transitions. [2021-12-28 03:25:14,682 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3903 transitions. Word has length 95 [2021-12-28 03:25:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:14,682 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 3903 transitions. [2021-12-28 03:25:14,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3903 transitions. [2021-12-28 03:25:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-28 03:25:14,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:14,685 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:14,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 03:25:14,685 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1961803849, now seen corresponding path program 1 times [2021-12-28 03:25:14,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:14,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156971615] [2021-12-28 03:25:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:14,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:25:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:25:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:25:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:25:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:14,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:14,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156971615] [2021-12-28 03:25:14,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156971615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:14,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:14,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:14,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763738886] [2021-12-28 03:25:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:14,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:14,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:14,855 INFO L87 Difference]: Start difference. First operand 2925 states and 3903 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:15,535 INFO L93 Difference]: Finished difference Result 5988 states and 7955 transitions. [2021-12-28 03:25:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 96 [2021-12-28 03:25:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:15,545 INFO L225 Difference]: With dead ends: 5988 [2021-12-28 03:25:15,545 INFO L226 Difference]: Without dead ends: 3072 [2021-12-28 03:25:15,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:15,550 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 800 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:15,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 1942 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-12-28 03:25:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2928. [2021-12-28 03:25:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2646 states have (on average 1.3310657596371882) internal successors, (3522), 2671 states have internal predecessors, (3522), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3903 transitions. [2021-12-28 03:25:15,709 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3903 transitions. Word has length 96 [2021-12-28 03:25:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:15,709 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 3903 transitions. [2021-12-28 03:25:15,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3903 transitions. [2021-12-28 03:25:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-28 03:25:15,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:15,712 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:25:15,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 03:25:15,712 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:15,712 INFO L85 PathProgramCache]: Analyzing trace with hash -400625242, now seen corresponding path program 1 times [2021-12-28 03:25:15,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:15,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022184299] [2021-12-28 03:25:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:15,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:25:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 03:25:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:25:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:25:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:15,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:15,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022184299] [2021-12-28 03:25:15,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022184299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:15,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:15,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:15,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026929972] [2021-12-28 03:25:15,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:15,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:15,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:15,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:15,895 INFO L87 Difference]: Start difference. First operand 2928 states and 3903 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:16,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:16,565 INFO L93 Difference]: Finished difference Result 5988 states and 7949 transitions. [2021-12-28 03:25:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 97 [2021-12-28 03:25:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:16,621 INFO L225 Difference]: With dead ends: 5988 [2021-12-28 03:25:16,621 INFO L226 Difference]: Without dead ends: 3069 [2021-12-28 03:25:16,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:16,625 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 794 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:16,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1942 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-12-28 03:25:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2922. [2021-12-28 03:25:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2640 states have (on average 1.330681818181818) internal successors, (3513), 2665 states have internal predecessors, (3513), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 3894 transitions. [2021-12-28 03:25:16,772 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 3894 transitions. Word has length 97 [2021-12-28 03:25:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:16,772 INFO L470 AbstractCegarLoop]: Abstraction has 2922 states and 3894 transitions. [2021-12-28 03:25:16,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 3894 transitions. [2021-12-28 03:25:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-28 03:25:16,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:16,775 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:16,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 03:25:16,775 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1958173396, now seen corresponding path program 1 times [2021-12-28 03:25:16,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614151159] [2021-12-28 03:25:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:16,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:25:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:25:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:16,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:16,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614151159] [2021-12-28 03:25:16,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614151159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:16,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:16,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:16,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152149468] [2021-12-28 03:25:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:16,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:16,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:16,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:16,925 INFO L87 Difference]: Start difference. First operand 2922 states and 3894 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:17,600 INFO L93 Difference]: Finished difference Result 5970 states and 7925 transitions. [2021-12-28 03:25:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 98 [2021-12-28 03:25:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:17,615 INFO L225 Difference]: With dead ends: 5970 [2021-12-28 03:25:17,615 INFO L226 Difference]: Without dead ends: 3057 [2021-12-28 03:25:17,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:17,620 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 787 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:17,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 1942 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-12-28 03:25:17,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2919. [2021-12-28 03:25:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2637 states have (on average 1.329920364050057) internal successors, (3507), 2662 states have internal predecessors, (3507), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 3888 transitions. [2021-12-28 03:25:17,817 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 3888 transitions. Word has length 98 [2021-12-28 03:25:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:17,818 INFO L470 AbstractCegarLoop]: Abstraction has 2919 states and 3888 transitions. [2021-12-28 03:25:17,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 3888 transitions. [2021-12-28 03:25:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-28 03:25:17,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:17,822 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:17,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 03:25:17,822 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2000823641, now seen corresponding path program 1 times [2021-12-28 03:25:17,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:17,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431125432] [2021-12-28 03:25:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:17,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:17,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:25:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:25:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:25:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:25:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:18,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:18,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431125432] [2021-12-28 03:25:18,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431125432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:18,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:18,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:18,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272169517] [2021-12-28 03:25:18,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:18,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:18,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:18,039 INFO L87 Difference]: Start difference. First operand 2919 states and 3888 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:18,904 INFO L93 Difference]: Finished difference Result 5964 states and 7913 transitions. [2021-12-28 03:25:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 99 [2021-12-28 03:25:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:18,911 INFO L225 Difference]: With dead ends: 5964 [2021-12-28 03:25:18,911 INFO L226 Difference]: Without dead ends: 3054 [2021-12-28 03:25:18,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:18,917 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 785 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:18,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 1942 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:25:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-12-28 03:25:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2916. [2021-12-28 03:25:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2634 states have (on average 1.3291571753986333) internal successors, (3501), 2659 states have internal predecessors, (3501), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3882 transitions. [2021-12-28 03:25:19,058 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3882 transitions. Word has length 99 [2021-12-28 03:25:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:19,059 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 3882 transitions. [2021-12-28 03:25:19,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3882 transitions. [2021-12-28 03:25:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 03:25:19,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:19,061 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:19,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 03:25:19,062 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:19,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1968688333, now seen corresponding path program 1 times [2021-12-28 03:25:19,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:19,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120470956] [2021-12-28 03:25:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:19,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:25:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:25:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:25:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:25:19,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:19,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120470956] [2021-12-28 03:25:19,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120470956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:19,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:19,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:25:19,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79917882] [2021-12-28 03:25:19,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:19,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:25:19,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:25:19,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:19,275 INFO L87 Difference]: Start difference. First operand 2916 states and 3882 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:19,989 INFO L93 Difference]: Finished difference Result 5958 states and 7901 transitions. [2021-12-28 03:25:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:25:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 100 [2021-12-28 03:25:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:19,995 INFO L225 Difference]: With dead ends: 5958 [2021-12-28 03:25:19,995 INFO L226 Difference]: Without dead ends: 3051 [2021-12-28 03:25:19,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:19,999 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 783 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:19,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1942 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:25:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-12-28 03:25:20,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2913. [2021-12-28 03:25:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2631 states have (on average 1.3283922462941846) internal successors, (3495), 2656 states have internal predecessors, (3495), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-28 03:25:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3876 transitions. [2021-12-28 03:25:20,130 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3876 transitions. Word has length 100 [2021-12-28 03:25:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:20,130 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 3876 transitions. [2021-12-28 03:25:20,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3876 transitions. [2021-12-28 03:25:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 03:25:20,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:20,133 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:20,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 03:25:20,133 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:20,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1466210216, now seen corresponding path program 1 times [2021-12-28 03:25:20,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:20,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419132535] [2021-12-28 03:25:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:20,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:25:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:25:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:25:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:25:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:25:20,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419132535] [2021-12-28 03:25:20,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419132535] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964187841] [2021-12-28 03:25:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:20,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:20,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:20,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:25:20,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:25:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:25:20,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 03:25:21,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:25:21,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964187841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:21,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:25:21,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-28 03:25:21,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834845966] [2021-12-28 03:25:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:21,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:25:21,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:25:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:25:21,160 INFO L87 Difference]: Start difference. First operand 2913 states and 3876 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:25:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:21,380 INFO L93 Difference]: Finished difference Result 5809 states and 7733 transitions. [2021-12-28 03:25:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:25:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2021-12-28 03:25:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:21,386 INFO L225 Difference]: With dead ends: 5809 [2021-12-28 03:25:21,386 INFO L226 Difference]: Without dead ends: 2908 [2021-12-28 03:25:21,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:25:21,391 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 2 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:21,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1878 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:25:21,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2021-12-28 03:25:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2908. [2021-12-28 03:25:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2628 states have (on average 1.3280060882800608) internal successors, (3490), 2652 states have internal predecessors, (3490), 159 states have call successors, (159), 90 states have call predecessors, (159), 120 states have return successors, (220), 177 states have call predecessors, (220), 157 states have call successors, (220) [2021-12-28 03:25:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3869 transitions. [2021-12-28 03:25:21,551 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3869 transitions. Word has length 101 [2021-12-28 03:25:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:21,552 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 3869 transitions. [2021-12-28 03:25:21,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:25:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3869 transitions. [2021-12-28 03:25:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-28 03:25:21,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:21,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:21,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:21,777 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,SelfDestructingSolverStorable17 [2021-12-28 03:25:21,777 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1414387121, now seen corresponding path program 1 times [2021-12-28 03:25:21,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:21,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735601185] [2021-12-28 03:25:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:21,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:25:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:25:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:25:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:25:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:22,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:25:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:25:22,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:22,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735601185] [2021-12-28 03:25:22,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735601185] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:22,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613710863] [2021-12-28 03:25:22,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:22,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:22,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:22,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:25:22,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:25:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:22,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:25:22,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:25:23,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:25:23,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613710863] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:25:23,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:25:23,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 23 [2021-12-28 03:25:23,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253081548] [2021-12-28 03:25:23,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:25:23,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-28 03:25:23,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-28 03:25:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:25:23,223 INFO L87 Difference]: Start difference. First operand 2908 states and 3869 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 16 states have internal predecessors, (110), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-28 03:25:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:25,150 INFO L93 Difference]: Finished difference Result 6365 states and 8552 transitions. [2021-12-28 03:25:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 03:25:25,150 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 16 states have internal predecessors, (110), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) Word has length 103 [2021-12-28 03:25:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:25,157 INFO L225 Difference]: With dead ends: 6365 [2021-12-28 03:25:25,157 INFO L226 Difference]: Without dead ends: 3473 [2021-12-28 03:25:25,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=1394, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 03:25:25,162 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 2069 mSDsluCounter, 11071 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 11801 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:25,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 11801 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 03:25:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2021-12-28 03:25:25,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 2033. [2021-12-28 03:25:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1822 states have (on average 1.3117453347969266) internal successors, (2390), 1837 states have internal predecessors, (2390), 121 states have call successors, (121), 76 states have call predecessors, (121), 89 states have return successors, (153), 127 states have call predecessors, (153), 119 states have call successors, (153) [2021-12-28 03:25:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2664 transitions. [2021-12-28 03:25:25,248 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2664 transitions. Word has length 103 [2021-12-28 03:25:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:25,248 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 2664 transitions. [2021-12-28 03:25:25,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 16 states have internal predecessors, (110), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-28 03:25:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2664 transitions. [2021-12-28 03:25:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-28 03:25:25,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:25,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:25,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 03:25:25,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:25,467 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1722415670, now seen corresponding path program 1 times [2021-12-28 03:25:25,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:25,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828910363] [2021-12-28 03:25:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:25,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:25:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:25:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:25:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:25:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:25:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:25:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 03:25:25,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:25,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828910363] [2021-12-28 03:25:25,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828910363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:25,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:25,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:25:25,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777291000] [2021-12-28 03:25:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:25,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:25:25,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:25:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:25:25,696 INFO L87 Difference]: Start difference. First operand 2033 states and 2664 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:26,215 INFO L93 Difference]: Finished difference Result 2165 states and 2792 transitions. [2021-12-28 03:25:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:25:26,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 105 [2021-12-28 03:25:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:26,216 INFO L225 Difference]: With dead ends: 2165 [2021-12-28 03:25:26,216 INFO L226 Difference]: Without dead ends: 0 [2021-12-28 03:25:26,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:25:26,234 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 594 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:26,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1630 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:25:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-28 03:25:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-28 03:25:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:25:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-28 03:25:26,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2021-12-28 03:25:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:26,239 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 03:25:26,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-28 03:25:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-28 03:25:26,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-28 03:25:26,242 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 03:25:26,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 03:25:26,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-28 03:25:58,541 WARN L228 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)