./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:55:47,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:55:47,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:55:47,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:55:47,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:55:47,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:55:47,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:55:47,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:55:47,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:55:47,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:55:47,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:55:47,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:55:47,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:55:47,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:55:47,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:55:47,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:55:47,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:55:47,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:55:47,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:55:47,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:55:47,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:55:47,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:55:47,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:55:47,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:55:47,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:55:47,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:55:47,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:55:47,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:55:47,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:55:47,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:55:47,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:55:47,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:55:47,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:55:47,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:55:47,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:55:47,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:55:47,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:55:47,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:55:47,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:55:47,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:55:47,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:55:47,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:55:47,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:55:47,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:55:47,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:55:47,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:55:47,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:55:47,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:55:47,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:55:47,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:55:47,881 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:55:47,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:55:47,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:55:47,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:55:47,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:55:47,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:55:47,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:55:47,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:55:47,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:55:47,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:55:47,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:55:47,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:55:47,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:55:47,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:55:47,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:55:47,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:55:47,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:55:47,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:55:47,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:55:47,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:55:47,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:55:47,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:55:47,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-12-28 03:55:48,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:55:48,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:55:48,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:55:48,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:55:48,164 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:55:48,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-12-28 03:55:48,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4010bdd4/a372f803ff6c44928d2fec878c9c6650/FLAG928456703 [2021-12-28 03:55:48,806 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:55:48,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-12-28 03:55:48,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4010bdd4/a372f803ff6c44928d2fec878c9c6650/FLAG928456703 [2021-12-28 03:55:49,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4010bdd4/a372f803ff6c44928d2fec878c9c6650 [2021-12-28 03:55:49,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:55:49,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:55:49,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:55:49,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:55:49,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:55:49,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:55:49" (1/1) ... [2021-12-28 03:55:49,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619681dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:49, skipping insertion in model container [2021-12-28 03:55:49,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:55:49" (1/1) ... [2021-12-28 03:55:49,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:55:49,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:55:49,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-12-28 03:55:50,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:55:50,200 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:55:50,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-12-28 03:55:50,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:55:50,572 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:55:50,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50 WrapperNode [2021-12-28 03:55:50,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:55:50,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:55:50,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:55:50,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:55:50,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,743 INFO L137 Inliner]: procedures = 199, calls = 723, calls flagged for inlining = 106, calls inlined = 103, statements flattened = 2213 [2021-12-28 03:55:50,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:55:50,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:55:50,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:55:50,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:55:50,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:55:50,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:55:50,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:55:50,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:55:50,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (1/1) ... [2021-12-28 03:55:50,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:55:50,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:55:50,953 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 03:55:51,018 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 03:55:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:55:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:55:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-28 03:55:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-28 03:55:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 03:55:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 03:55:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:55:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:55:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure setup_descriptors [2021-12-28 03:55:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_descriptors [2021-12-28 03:55:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-28 03:55:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-28 03:55:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure disable_all_interrupts [2021-12-28 03:55:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_all_interrupts [2021-12-28 03:55:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:55:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:55:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_interrupt [2021-12-28 03:55:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_interrupt [2021-12-28 03:55:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:55:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:55:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:55:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:55:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-28 03:55:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-28 03:55:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 03:55:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 03:55:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:55:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:55:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_write_descriptor [2021-12-28 03:55:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_write_descriptor [2021-12-28 03:55:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-28 03:55:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-28 03:55:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:55:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-28 03:55:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-28 03:55:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:55:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-28 03:55:51,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-28 03:55:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-28 03:55:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-28 03:55:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-28 03:55:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-28 03:55:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 03:55:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 03:55:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:55:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:55:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_read_descriptor [2021-12-28 03:55:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_read_descriptor [2021-12-28 03:55:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 03:55:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 03:55:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-28 03:55:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-28 03:55:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 03:55:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 03:55:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 03:55:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 03:55:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-28 03:55:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-28 03:55:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2021-12-28 03:55:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2021-12-28 03:55:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:55:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 03:55:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 03:55:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-12-28 03:55:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-12-28 03:55:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-28 03:55:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-28 03:55:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:55:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-28 03:55:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-28 03:55:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:55:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-28 03:55:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-28 03:55:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:55:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:55:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_poll_controller [2021-12-28 03:55:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_poll_controller [2021-12-28 03:55:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:55:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-28 03:55:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-28 03:55:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:55:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:55:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure receive_active [2021-12-28 03:55:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure receive_active [2021-12-28 03:55:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:55:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:55:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-28 03:55:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-28 03:55:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:55:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_active [2021-12-28 03:55:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_active [2021-12-28 03:55:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-28 03:55:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-28 03:55:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_receive [2021-12-28 03:55:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_receive [2021-12-28 03:55:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-28 03:55:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-28 03:55:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:55:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:55:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-28 03:55:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-28 03:55:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:55:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:55:51,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:55:51,723 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:55:51,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:55:51,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 03:55:52,771 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:55:52,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:55:52,779 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 03:55:52,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:55:52 BoogieIcfgContainer [2021-12-28 03:55:52,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:55:52,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:55:52,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:55:52,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:55:52,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:55:49" (1/3) ... [2021-12-28 03:55:52,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b32354e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:55:52, skipping insertion in model container [2021-12-28 03:55:52,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:50" (2/3) ... [2021-12-28 03:55:52,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b32354e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:55:52, skipping insertion in model container [2021-12-28 03:55:52,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:55:52" (3/3) ... [2021-12-28 03:55:52,786 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-12-28 03:55:52,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:55:52,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:55:52,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:55:52,822 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 03:55:52,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:55:52,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 798 states, 554 states have (on average 1.3068592057761732) internal successors, (724), 569 states have internal predecessors, (724), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) [2021-12-28 03:55:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-28 03:55:52,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:52,846 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 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 03:55:52,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1359452381, now seen corresponding path program 1 times [2021-12-28 03:55:52,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427327497] [2021-12-28 03:55:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:52,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:55:53,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:53,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427327497] [2021-12-28 03:55:53,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427327497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:53,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:53,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:55:53,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111196950] [2021-12-28 03:55:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:53,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:55:53,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:55:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:55:53,145 INFO L87 Difference]: Start difference. First operand has 798 states, 554 states have (on average 1.3068592057761732) internal successors, (724), 569 states have internal predecessors, (724), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 03:55:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:55,083 INFO L93 Difference]: Finished difference Result 2457 states and 3514 transitions. [2021-12-28 03:55:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:55:55,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-12-28 03:55:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:55,100 INFO L225 Difference]: With dead ends: 2457 [2021-12-28 03:55:55,101 INFO L226 Difference]: Without dead ends: 1638 [2021-12-28 03:55:55,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 03:55:55,109 INFO L933 BasicCegarLoop]: 1237 mSDtfsCounter, 1340 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:55,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 2401 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 03:55:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-12-28 03:55:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1540. [2021-12-28 03:55:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1074 states have (on average 1.2793296089385475) internal successors, (1374), 1088 states have internal predecessors, (1374), 381 states have call successors, (381), 85 states have call predecessors, (381), 84 states have return successors, (380), 378 states have call predecessors, (380), 380 states have call successors, (380) [2021-12-28 03:55:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2135 transitions. [2021-12-28 03:55:55,212 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2135 transitions. Word has length 35 [2021-12-28 03:55:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:55,212 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2135 transitions. [2021-12-28 03:55:55,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 03:55:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2135 transitions. [2021-12-28 03:55:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 03:55:55,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:55,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 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 03:55:55,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:55:55,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:55,216 INFO L85 PathProgramCache]: Analyzing trace with hash -241261671, now seen corresponding path program 1 times [2021-12-28 03:55:55,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:55,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24192780] [2021-12-28 03:55:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:55,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:55:55,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:55,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24192780] [2021-12-28 03:55:55,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24192780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:55,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:55,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:55:55,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381051339] [2021-12-28 03:55:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:55,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:55:55,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:55:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:55:55,327 INFO L87 Difference]: Start difference. First operand 1540 states and 2135 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 03:55:57,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:57,524 INFO L93 Difference]: Finished difference Result 4789 states and 6734 transitions. [2021-12-28 03:55:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:55:57,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-28 03:55:57,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:57,539 INFO L225 Difference]: With dead ends: 4789 [2021-12-28 03:55:57,540 INFO L226 Difference]: Without dead ends: 3254 [2021-12-28 03:55:57,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:55:57,550 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 1307 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:57,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 3832 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 03:55:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-12-28 03:55:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3086. [2021-12-28 03:55:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 2151 states have (on average 1.2794049279404929) internal successors, (2752), 2183 states have internal predecessors, (2752), 758 states have call successors, (758), 169 states have call predecessors, (758), 176 states have return successors, (802), 755 states have call predecessors, (802), 757 states have call successors, (802) [2021-12-28 03:55:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4312 transitions. [2021-12-28 03:55:57,668 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4312 transitions. Word has length 38 [2021-12-28 03:55:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:57,669 INFO L470 AbstractCegarLoop]: Abstraction has 3086 states and 4312 transitions. [2021-12-28 03:55:57,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 03:55:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4312 transitions. [2021-12-28 03:55:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:55:57,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:57,682 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:57,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:55:57,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:57,683 INFO L85 PathProgramCache]: Analyzing trace with hash -106197422, now seen corresponding path program 1 times [2021-12-28 03:55:57,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:57,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236443921] [2021-12-28 03:55:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:57,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:55:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:55:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:55:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:55:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:55:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:55:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:55:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 03:55:58,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:58,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236443921] [2021-12-28 03:55:58,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236443921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:58,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:58,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:55:58,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453835829] [2021-12-28 03:55:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:58,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:55:58,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:55:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:55:58,021 INFO L87 Difference]: Start difference. First operand 3086 states and 4312 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:56:01,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:01,357 INFO L93 Difference]: Finished difference Result 9610 states and 13619 transitions. [2021-12-28 03:56:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:56:01,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 130 [2021-12-28 03:56:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:01,390 INFO L225 Difference]: With dead ends: 9610 [2021-12-28 03:56:01,390 INFO L226 Difference]: Without dead ends: 6534 [2021-12-28 03:56:01,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:56:01,404 INFO L933 BasicCegarLoop]: 1247 mSDtfsCounter, 1319 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:01,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 3866 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-28 03:56:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2021-12-28 03:56:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 6174. [2021-12-28 03:56:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6174 states, 4305 states have (on average 1.2764227642276422) internal successors, (5495), 4373 states have internal predecessors, (5495), 1512 states have call successors, (1512), 337 states have call predecessors, (1512), 356 states have return successors, (1605), 1507 states have call predecessors, (1605), 1511 states have call successors, (1605) [2021-12-28 03:56:01,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 8612 transitions. [2021-12-28 03:56:01,684 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 8612 transitions. Word has length 130 [2021-12-28 03:56:01,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:01,684 INFO L470 AbstractCegarLoop]: Abstraction has 6174 states and 8612 transitions. [2021-12-28 03:56:01,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-28 03:56:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 8612 transitions. [2021-12-28 03:56:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-28 03:56:01,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:01,693 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:56:01,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:56:01,693 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash -741737467, now seen corresponding path program 1 times [2021-12-28 03:56:01,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:01,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876073951] [2021-12-28 03:56:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:01,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:56:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:56:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:56:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:56:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 03:56:02,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876073951] [2021-12-28 03:56:02,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876073951] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:56:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758601694] [2021-12-28 03:56:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:02,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:56:02,014 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 03:56:02,027 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 03:56:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:02,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:56:02,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:56:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 03:56:02,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:56:02,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758601694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:56:02,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:56:02,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-28 03:56:02,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620750812] [2021-12-28 03:56:02,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:56:02,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:56:02,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:56:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:56:02,742 INFO L87 Difference]: Start difference. First operand 6174 states and 8612 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:03,742 INFO L93 Difference]: Finished difference Result 18510 states and 25830 transitions. [2021-12-28 03:56:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:56:03,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2021-12-28 03:56:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:03,795 INFO L225 Difference]: With dead ends: 18510 [2021-12-28 03:56:03,796 INFO L226 Difference]: Without dead ends: 12346 [2021-12-28 03:56:03,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:56:03,824 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 975 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4109 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:03,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 4109 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:56:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12346 states. [2021-12-28 03:56:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12346 to 12306. [2021-12-28 03:56:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12306 states, 8569 states have (on average 1.2777453611856693) internal successors, (10949), 8741 states have internal predecessors, (10949), 3020 states have call successors, (3020), 673 states have call predecessors, (3020), 716 states have return successors, (3211), 2979 states have call predecessors, (3211), 3019 states have call successors, (3211) [2021-12-28 03:56:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12306 states to 12306 states and 17180 transitions. [2021-12-28 03:56:05,074 INFO L78 Accepts]: Start accepts. Automaton has 12306 states and 17180 transitions. Word has length 136 [2021-12-28 03:56:05,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:05,078 INFO L470 AbstractCegarLoop]: Abstraction has 12306 states and 17180 transitions. [2021-12-28 03:56:05,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:05,079 INFO L276 IsEmpty]: Start isEmpty. Operand 12306 states and 17180 transitions. [2021-12-28 03:56:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 03:56:05,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:05,107 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:56:05,174 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 03:56:05,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:05,328 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1350491809, now seen corresponding path program 1 times [2021-12-28 03:56:05,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:05,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000733145] [2021-12-28 03:56:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:05,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:56:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:56:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:56:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:56:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 03:56:05,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:05,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000733145] [2021-12-28 03:56:05,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000733145] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:56:05,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274819266] [2021-12-28 03:56:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:05,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:05,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:56:05,708 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 03:56:05,753 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 03:56:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:06,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:56:06,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:56:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 03:56:06,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:56:06,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274819266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:56:06,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:56:06,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-28 03:56:06,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279031774] [2021-12-28 03:56:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:56:06,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:56:06,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:56:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:56:06,388 INFO L87 Difference]: Start difference. First operand 12306 states and 17180 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:07,593 INFO L93 Difference]: Finished difference Result 36906 states and 51534 transitions. [2021-12-28 03:56:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:56:07,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2021-12-28 03:56:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:07,686 INFO L225 Difference]: With dead ends: 36906 [2021-12-28 03:56:07,687 INFO L226 Difference]: Without dead ends: 24610 [2021-12-28 03:56:07,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:56:07,733 INFO L933 BasicCegarLoop]: 1258 mSDtfsCounter, 986 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:07,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 3691 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:56:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24610 states. [2021-12-28 03:56:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24610 to 24602. [2021-12-28 03:56:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24602 states, 17129 states have (on average 1.2778912954638333) internal successors, (21889), 17477 states have internal predecessors, (21889), 6036 states have call successors, (6036), 1345 states have call predecessors, (6036), 1436 states have return successors, (6411), 5955 states have call predecessors, (6411), 6035 states have call successors, (6411) [2021-12-28 03:56:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24602 states to 24602 states and 34336 transitions. [2021-12-28 03:56:08,622 INFO L78 Accepts]: Start accepts. Automaton has 24602 states and 34336 transitions. Word has length 139 [2021-12-28 03:56:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:08,622 INFO L470 AbstractCegarLoop]: Abstraction has 24602 states and 34336 transitions. [2021-12-28 03:56:08,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 24602 states and 34336 transitions. [2021-12-28 03:56:08,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 03:56:08,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:08,647 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:56:08,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:56:08,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:08,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:08,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash -430252830, now seen corresponding path program 1 times [2021-12-28 03:56:08,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:08,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391456273] [2021-12-28 03:56:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:08,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:56:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:56:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:56:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:56:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:56:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-28 03:56:09,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391456273] [2021-12-28 03:56:09,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391456273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:56:09,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:56:09,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:56:09,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138201729] [2021-12-28 03:56:09,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:56:09,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:56:09,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:56:09,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:56:09,115 INFO L87 Difference]: Start difference. First operand 24602 states and 34336 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 03:56:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:12,372 INFO L93 Difference]: Finished difference Result 67834 states and 93905 transitions. [2021-12-28 03:56:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:56:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-12-28 03:56:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:12,658 INFO L225 Difference]: With dead ends: 67834 [2021-12-28 03:56:12,659 INFO L226 Difference]: Without dead ends: 43242 [2021-12-28 03:56:12,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:56:12,723 INFO L933 BasicCegarLoop]: 1070 mSDtfsCounter, 1803 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:12,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 2537 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-28 03:56:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43242 states. [2021-12-28 03:56:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43242 to 39970. [2021-12-28 03:56:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39970 states, 28253 states have (on average 1.2695642940572682) internal successors, (35869), 29005 states have internal predecessors, (35869), 8964 states have call successors, (8964), 2465 states have call predecessors, (8964), 2752 states have return successors, (9875), 8787 states have call predecessors, (9875), 8963 states have call successors, (9875) [2021-12-28 03:56:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39970 states to 39970 states and 54708 transitions. [2021-12-28 03:56:14,278 INFO L78 Accepts]: Start accepts. Automaton has 39970 states and 54708 transitions. Word has length 151 [2021-12-28 03:56:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:14,279 INFO L470 AbstractCegarLoop]: Abstraction has 39970 states and 54708 transitions. [2021-12-28 03:56:14,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 03:56:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 39970 states and 54708 transitions. [2021-12-28 03:56:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 03:56:14,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:14,285 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:56:14,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:56:14,285 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1553717310, now seen corresponding path program 1 times [2021-12-28 03:56:14,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258955313] [2021-12-28 03:56:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:14,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:56:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:56:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:56:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:56:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 03:56:14,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:14,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258955313] [2021-12-28 03:56:14,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258955313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:56:14,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991439401] [2021-12-28 03:56:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:14,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:14,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:56:14,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:56:14,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:56:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:14,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:56:14,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:56:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 03:56:15,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:56:15,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991439401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:56:15,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:56:15,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-28 03:56:15,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310539628] [2021-12-28 03:56:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:56:15,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:56:15,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:56:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:56:15,331 INFO L87 Difference]: Start difference. First operand 39970 states and 54708 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:16,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:16,851 INFO L93 Difference]: Finished difference Result 79954 states and 109450 transitions. [2021-12-28 03:56:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:56:16,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2021-12-28 03:56:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:17,069 INFO L225 Difference]: With dead ends: 79954 [2021-12-28 03:56:17,069 INFO L226 Difference]: Without dead ends: 39994 [2021-12-28 03:56:17,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:56:17,189 INFO L933 BasicCegarLoop]: 1366 mSDtfsCounter, 974 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 4394 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:17,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 4394 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:56:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39994 states. [2021-12-28 03:56:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39994 to 39986. [2021-12-28 03:56:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39986 states, 28261 states have (on average 1.2694879869785216) internal successors, (35877), 29021 states have internal predecessors, (35877), 8964 states have call successors, (8964), 2465 states have call predecessors, (8964), 2760 states have return successors, (9843), 8787 states have call predecessors, (9843), 8963 states have call successors, (9843) [2021-12-28 03:56:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39986 states to 39986 states and 54684 transitions. [2021-12-28 03:56:18,754 INFO L78 Accepts]: Start accepts. Automaton has 39986 states and 54684 transitions. Word has length 138 [2021-12-28 03:56:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:18,754 INFO L470 AbstractCegarLoop]: Abstraction has 39986 states and 54684 transitions. [2021-12-28 03:56:18,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 39986 states and 54684 transitions. [2021-12-28 03:56:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 03:56:18,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:18,761 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:56:18,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 03:56:18,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:18,976 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:18,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:18,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1890485240, now seen corresponding path program 1 times [2021-12-28 03:56:18,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:18,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069071699] [2021-12-28 03:56:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:18,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:56:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:56:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:56:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:56:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-28 03:56:19,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:19,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069071699] [2021-12-28 03:56:19,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069071699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:56:19,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323010637] [2021-12-28 03:56:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:19,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:56:19,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:56:19,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:56:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:19,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:56:19,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:56:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 03:56:19,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:56:19,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323010637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:56:19,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:56:19,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-28 03:56:19,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866357971] [2021-12-28 03:56:19,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:56:19,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:56:19,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:56:19,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:56:19,852 INFO L87 Difference]: Start difference. First operand 39986 states and 54684 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:22,505 INFO L93 Difference]: Finished difference Result 119946 states and 164058 transitions. [2021-12-28 03:56:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:56:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2021-12-28 03:56:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:22,844 INFO L225 Difference]: With dead ends: 119946 [2021-12-28 03:56:22,844 INFO L226 Difference]: Without dead ends: 79356 [2021-12-28 03:56:22,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:56:22,949 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 988 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:22,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 4092 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:56:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79356 states. [2021-12-28 03:56:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79356 to 79346. [2021-12-28 03:56:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79346 states, 56041 states have (on average 1.269624025267215) internal successors, (71151), 57549 states have internal predecessors, (71151), 17838 states have call successors, (17838), 4891 states have call predecessors, (17838), 5466 states have return successors, (19472), 17479 states have call predecessors, (19472), 17837 states have call successors, (19472) [2021-12-28 03:56:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79346 states to 79346 states and 108461 transitions. [2021-12-28 03:56:26,501 INFO L78 Accepts]: Start accepts. Automaton has 79346 states and 108461 transitions. Word has length 137 [2021-12-28 03:56:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:26,501 INFO L470 AbstractCegarLoop]: Abstraction has 79346 states and 108461 transitions. [2021-12-28 03:56:26,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:56:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 79346 states and 108461 transitions. [2021-12-28 03:56:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-28 03:56:26,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:26,507 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:56:26,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-28 03:56:26,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:26,723 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1817425076, now seen corresponding path program 1 times [2021-12-28 03:56:26,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:26,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536200598] [2021-12-28 03:56:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:26,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:56:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:56:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:56:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:56:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:56:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 03:56:26,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:26,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536200598] [2021-12-28 03:56:26,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536200598] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:56:26,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515028365] [2021-12-28 03:56:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:26,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:56:26,979 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:56:27,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:56:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:56:27,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:56:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-28 03:56:27,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:56:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-28 03:56:28,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515028365] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:56:28,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:56:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2021-12-28 03:56:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394979427] [2021-12-28 03:56:28,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:56:28,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-28 03:56:28,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:28,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-28 03:56:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:56:28,037 INFO L87 Difference]: Start difference. First operand 79346 states and 108461 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2021-12-28 03:56:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:39,153 INFO L93 Difference]: Finished difference Result 232498 states and 328736 transitions. [2021-12-28 03:56:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-28 03:56:39,154 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) Word has length 148 [2021-12-28 03:56:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:40,183 INFO L225 Difference]: With dead ends: 232498 [2021-12-28 03:56:40,183 INFO L226 Difference]: Without dead ends: 152316 [2021-12-28 03:56:40,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2021-12-28 03:56:40,504 INFO L933 BasicCegarLoop]: 1911 mSDtfsCounter, 3318 mSDsluCounter, 14078 mSDsCounter, 0 mSdLazyCounter, 10623 mSolverCounterSat, 1622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 15989 SdHoareTripleChecker+Invalid, 12245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1622 IncrementalHoareTripleChecker+Valid, 10623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:40,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3691 Valid, 15989 Invalid, 12245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1622 Valid, 10623 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-28 03:56:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152316 states. [2021-12-28 03:56:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152316 to 121058. [2021-12-28 03:56:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121058 states, 85477 states have (on average 1.2612632638019585) internal successors, (107809), 87949 states have internal predecessors, (107809), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8348 states have return successors, (30817), 26659 states have call predecessors, (30817), 27231 states have call successors, (30817) [2021-12-28 03:56:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121058 states to 121058 states and 165858 transitions. [2021-12-28 03:56:46,416 INFO L78 Accepts]: Start accepts. Automaton has 121058 states and 165858 transitions. Word has length 148 [2021-12-28 03:56:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:46,417 INFO L470 AbstractCegarLoop]: Abstraction has 121058 states and 165858 transitions. [2021-12-28 03:56:46,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2021-12-28 03:56:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 121058 states and 165858 transitions. [2021-12-28 03:56:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-28 03:56:46,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:46,423 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:46,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:56:46,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:46,643 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:46,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:46,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2146025886, now seen corresponding path program 1 times [2021-12-28 03:56:46,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:46,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610871682] [2021-12-28 03:56:46,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:46,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:56:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:56:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:46,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:56:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:56:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:56:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:56:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:56:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:56:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:56:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 03:56:47,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:47,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610871682] [2021-12-28 03:56:47,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610871682] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:56:47,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278829337] [2021-12-28 03:56:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:47,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:56:47,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:56:47,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:56:47,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process