./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 f4b24e32 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-?-f4b24e3 [2022-07-14 00:10:13,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:10:13,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:10:13,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:10:13,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:10:13,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:10:13,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:10:13,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:10:13,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:10:13,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:10:13,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:10:13,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:10:13,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:10:13,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:10:13,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:10:13,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:10:13,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:10:13,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:10:13,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:10:13,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:10:13,287 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:10:13,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:10:13,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:10:13,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:10:13,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:10:13,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:10:13,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:10:13,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:10:13,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:10:13,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:10:13,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:10:13,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:10:13,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:10:13,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:10:13,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:10:13,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:10:13,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:10:13,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:10:13,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:10:13,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:10:13,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:10:13,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:10:13,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:10:13,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:10:13,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:10:13,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:10:13,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:10:13,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:10:13,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:10:13,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:10:13,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:10:13,335 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:10:13,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:10:13,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:10:13,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:10:13,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:10:13,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:10:13,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:10:13,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:10:13,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:10:13,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:10:13,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:10:13,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:10:13,338 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:10:13,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:10:13,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:10:13,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2022-07-14 00:10:13,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:10:13,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:10:13,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:10:13,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:10:13,544 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:10:13,545 INFO L432 ainManager$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 [2022-07-14 00:10:13,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0a12b259/9513f9ac69ba4281b38d4b8cd08fa180/FLAG0c3aa2612 [2022-07-14 00:10:14,138 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:10:14,139 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 [2022-07-14 00:10:14,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0a12b259/9513f9ac69ba4281b38d4b8cd08fa180/FLAG0c3aa2612 [2022-07-14 00:10:14,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0a12b259/9513f9ac69ba4281b38d4b8cd08fa180 [2022-07-14 00:10:14,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:10:14,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:10:14,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:10:14,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:10:14,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:10:14,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:10:14" (1/1) ... [2022-07-14 00:10:14,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2914e90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:14, skipping insertion in model container [2022-07-14 00:10:14,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:10:14" (1/1) ... [2022-07-14 00:10:14,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:10:14,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:10:14,968 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] [2022-07-14 00:10:15,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:10:15,345 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:10:15,449 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] [2022-07-14 00:10:15,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:10:15,643 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:10:15,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15 WrapperNode [2022-07-14 00:10:15,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:10:15,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:10:15,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:10:15,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:10:15,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,850 INFO L137 Inliner]: procedures = 199, calls = 723, calls flagged for inlining = 106, calls inlined = 103, statements flattened = 2466 [2022-07-14 00:10:15,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:10:15,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:10:15,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:10:15,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:10:15,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:15,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:16,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:10:16,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:10:16,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:10:16,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:10:16,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (1/1) ... [2022-07-14 00:10:16,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:10:16,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:16,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 00:10:16,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 00:10:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:10:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:10:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-14 00:10:16,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-14 00:10:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:10:16,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:10:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:10:16,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:10:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure setup_descriptors [2022-07-14 00:10:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_descriptors [2022-07-14 00:10:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-14 00:10:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-14 00:10:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure disable_all_interrupts [2022-07-14 00:10:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_all_interrupts [2022-07-14 00:10:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:10:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:10:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_interrupt [2022-07-14 00:10:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_interrupt [2022-07-14 00:10:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 00:10:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 00:10:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:10:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:10:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-07-14 00:10:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-07-14 00:10:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-14 00:10:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-14 00:10:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:10:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:10:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_write_descriptor [2022-07-14 00:10:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_write_descriptor [2022-07-14 00:10:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-14 00:10:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-14 00:10:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:10:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-14 00:10:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-14 00:10:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:10:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-14 00:10:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-14 00:10:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-07-14 00:10:16,083 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-07-14 00:10:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-14 00:10:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-14 00:10:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 00:10:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 00:10:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:10:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:10:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_read_descriptor [2022-07-14 00:10:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_read_descriptor [2022-07-14 00:10:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-14 00:10:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-14 00:10:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-14 00:10:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-14 00:10:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-14 00:10:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-14 00:10:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-14 00:10:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-14 00:10:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-14 00:10:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-14 00:10:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2022-07-14 00:10:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2022-07-14 00:10:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 00:10:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:10:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:10:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-07-14 00:10:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-07-14 00:10:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-14 00:10:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-14 00:10:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 00:10:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-14 00:10:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-14 00:10:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:10:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-14 00:10:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-14 00:10:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:10:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:10:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_poll_controller [2022-07-14 00:10:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_poll_controller [2022-07-14 00:10:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:10:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-14 00:10:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-14 00:10:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:10:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:10:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure receive_active [2022-07-14 00:10:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure receive_active [2022-07-14 00:10:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:10:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:10:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-14 00:10:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-14 00:10:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:10:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_active [2022-07-14 00:10:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_active [2022-07-14 00:10:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-14 00:10:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-14 00:10:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_receive [2022-07-14 00:10:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_receive [2022-07-14 00:10:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-07-14 00:10:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-07-14 00:10:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-14 00:10:16,094 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-14 00:10:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-14 00:10:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-14 00:10:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:10:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:10:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:10:16,564 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:10:16,566 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:10:16,760 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:10:17,905 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:10:17,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:10:17,919 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-14 00:10:17,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:10:17 BoogieIcfgContainer [2022-07-14 00:10:17,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:10:17,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:10:17,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:10:17,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:10:17,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:10:14" (1/3) ... [2022-07-14 00:10:17,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8883682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:10:17, skipping insertion in model container [2022-07-14 00:10:17,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:10:15" (2/3) ... [2022-07-14 00:10:17,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8883682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:10:17, skipping insertion in model container [2022-07-14 00:10:17,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:10:17" (3/3) ... [2022-07-14 00:10:17,942 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 [2022-07-14 00:10:17,954 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:10:17,954 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:10:18,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:10:18,025 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32609030, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@20f1d36c [2022-07-14 00:10:18,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:10:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 888 states, 644 states have (on average 1.406832298136646) internal successors, (906), 659 states have internal predecessors, (906), 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) [2022-07-14 00:10:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-14 00:10:18,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:18,047 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:18,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash -979232113, now seen corresponding path program 1 times [2022-07-14 00:10:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:18,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818108478] [2022-07-14 00:10:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 00:10:18,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:18,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818108478] [2022-07-14 00:10:18,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818108478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:18,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:10:18,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:10:18,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8650595] [2022-07-14 00:10:18,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:18,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:10:18,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:10:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:10:18,450 INFO L87 Difference]: Start difference. First operand has 888 states, 644 states have (on average 1.406832298136646) internal successors, (906), 659 states have internal predecessors, (906), 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) [2022-07-14 00:10:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:20,391 INFO L93 Difference]: Finished difference Result 2727 states and 4064 transitions. [2022-07-14 00:10:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:10:20,393 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 [2022-07-14 00:10:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:20,420 INFO L225 Difference]: With dead ends: 2727 [2022-07-14 00:10:20,421 INFO L226 Difference]: Without dead ends: 1818 [2022-07-14 00:10:20,427 INFO L412 NwaCegarLoop]: 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 [2022-07-14 00:10:20,429 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1491 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:20,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 2714 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-14 00:10:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-07-14 00:10:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1720. [2022-07-14 00:10:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1254 states have (on average 1.2854864433811801) internal successors, (1612), 1268 states have internal predecessors, (1612), 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) [2022-07-14 00:10:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2373 transitions. [2022-07-14 00:10:20,556 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2373 transitions. Word has length 35 [2022-07-14 00:10:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:20,557 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2373 transitions. [2022-07-14 00:10:20,557 INFO L496 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) [2022-07-14 00:10:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2373 transitions. [2022-07-14 00:10:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-14 00:10:20,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:20,570 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:20,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:10:20,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2045075246, now seen corresponding path program 1 times [2022-07-14 00:10:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928007402] [2022-07-14 00:10:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 00:10:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:20,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928007402] [2022-07-14 00:10:20,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928007402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:20,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:10:20,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:10:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489744115] [2022-07-14 00:10:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:20,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:10:20,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:10:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:10:20,681 INFO L87 Difference]: Start difference. First operand 1720 states and 2373 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) [2022-07-14 00:10:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:23,156 INFO L93 Difference]: Finished difference Result 5329 states and 7448 transitions. [2022-07-14 00:10:23,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:10:23,156 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 [2022-07-14 00:10:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:23,174 INFO L225 Difference]: With dead ends: 5329 [2022-07-14 00:10:23,174 INFO L226 Difference]: Without dead ends: 3614 [2022-07-14 00:10:23,179 INFO L412 NwaCegarLoop]: 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 [2022-07-14 00:10:23,180 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1461 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 4346 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:23,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 4346 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-14 00:10:23,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-07-14 00:10:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3446. [2022-07-14 00:10:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2511 states have (on average 1.2855436081242533) internal successors, (3228), 2543 states have internal predecessors, (3228), 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) [2022-07-14 00:10:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4788 transitions. [2022-07-14 00:10:23,289 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4788 transitions. Word has length 38 [2022-07-14 00:10:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:23,290 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 4788 transitions. [2022-07-14 00:10:23,290 INFO L496 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) [2022-07-14 00:10:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4788 transitions. [2022-07-14 00:10:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-14 00:10:23,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:23,297 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:10:23,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash -792223232, now seen corresponding path program 1 times [2022-07-14 00:10:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:23,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908800791] [2022-07-14 00:10:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:23,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:10:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:10:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-14 00:10:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 00:10:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-14 00:10:23,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908800791] [2022-07-14 00:10:23,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908800791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:23,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:10:23,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:10:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463271436] [2022-07-14 00:10:23,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:23,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:10:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:10:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:10:23,653 INFO L87 Difference]: Start difference. First operand 3446 states and 4788 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 00:10:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:25,607 INFO L93 Difference]: Finished difference Result 9226 states and 12829 transitions. [2022-07-14 00:10:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:10:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-14 00:10:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:25,656 INFO L225 Difference]: With dead ends: 9226 [2022-07-14 00:10:25,657 INFO L226 Difference]: Without dead ends: 5790 [2022-07-14 00:10:25,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:10:25,669 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 1465 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:25,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 3241 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-14 00:10:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2022-07-14 00:10:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5402. [2022-07-14 00:10:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 3965 states have (on average 1.2799495586380831) internal successors, (5075), 4033 states have internal predecessors, (5075), 1108 states have call successors, (1108), 309 states have call predecessors, (1108), 328 states have return successors, (1187), 1095 states have call predecessors, (1187), 1107 states have call successors, (1187) [2022-07-14 00:10:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 7370 transitions. [2022-07-14 00:10:25,844 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 7370 transitions. Word has length 143 [2022-07-14 00:10:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:25,844 INFO L495 AbstractCegarLoop]: Abstraction has 5402 states and 7370 transitions. [2022-07-14 00:10:25,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 00:10:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 7370 transitions. [2022-07-14 00:10:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-14 00:10:25,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:25,848 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:25,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:10:25,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash 146331670, now seen corresponding path program 1 times [2022-07-14 00:10:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:25,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751380898] [2022-07-14 00:10:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:10:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:10:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:10:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:10:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-14 00:10:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:26,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751380898] [2022-07-14 00:10:26,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751380898] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129801560] [2022-07-14 00:10:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:26,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:26,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:26,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:26,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 00:10:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:26,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:10:26,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 00:10:26,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:10:26,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129801560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:26,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:10:26,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-14 00:10:26,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474728324] [2022-07-14 00:10:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:26,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:10:26,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:10:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:10:26,780 INFO L87 Difference]: Start difference. First operand 5402 states and 7370 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) [2022-07-14 00:10:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:27,606 INFO L93 Difference]: Finished difference Result 16194 states and 22104 transitions. [2022-07-14 00:10:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:10:27,606 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 [2022-07-14 00:10:27,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:27,651 INFO L225 Difference]: With dead ends: 16194 [2022-07-14 00:10:27,652 INFO L226 Difference]: Without dead ends: 10802 [2022-07-14 00:10:27,671 INFO L412 NwaCegarLoop]: 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 [2022-07-14 00:10:27,672 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 1094 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 4777 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:27,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 4777 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 00:10:27,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10802 states. [2022-07-14 00:10:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10802 to 10762. [2022-07-14 00:10:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10762 states, 7889 states have (on average 1.2814044872607429) internal successors, (10109), 8061 states have internal predecessors, (10109), 2212 states have call successors, (2212), 617 states have call predecessors, (2212), 660 states have return successors, (2375), 2155 states have call predecessors, (2375), 2211 states have call successors, (2375) [2022-07-14 00:10:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10762 states to 10762 states and 14696 transitions. [2022-07-14 00:10:28,028 INFO L78 Accepts]: Start accepts. Automaton has 10762 states and 14696 transitions. Word has length 136 [2022-07-14 00:10:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:28,056 INFO L495 AbstractCegarLoop]: Abstraction has 10762 states and 14696 transitions. [2022-07-14 00:10:28,057 INFO L496 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) [2022-07-14 00:10:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 10762 states and 14696 transitions. [2022-07-14 00:10:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-14 00:10:28,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:28,062 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:28,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:10:28,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:28,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:28,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2041881488, now seen corresponding path program 1 times [2022-07-14 00:10:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:28,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213283870] [2022-07-14 00:10:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:28,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:10:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:10:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:10:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:10:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-14 00:10:28,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213283870] [2022-07-14 00:10:28,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213283870] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:28,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255439143] [2022-07-14 00:10:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:28,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:28,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:28,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:28,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 00:10:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:28,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:10:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 00:10:29,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:10:29,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255439143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:29,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:10:29,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-14 00:10:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458813967] [2022-07-14 00:10:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:29,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:10:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:29,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:10:29,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:10:29,125 INFO L87 Difference]: Start difference. First operand 10762 states and 14696 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) [2022-07-14 00:10:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:30,184 INFO L93 Difference]: Finished difference Result 32274 states and 44082 transitions. [2022-07-14 00:10:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:10:30,186 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 [2022-07-14 00:10:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:30,263 INFO L225 Difference]: With dead ends: 32274 [2022-07-14 00:10:30,263 INFO L226 Difference]: Without dead ends: 21522 [2022-07-14 00:10:30,292 INFO L412 NwaCegarLoop]: 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 [2022-07-14 00:10:30,293 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 1097 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 5055 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:30,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 5055 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 00:10:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21522 states. [2022-07-14 00:10:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21522 to 21514. [2022-07-14 00:10:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21514 states, 15769 states have (on average 1.2815650960745768) internal successors, (20209), 16117 states have internal predecessors, (20209), 4420 states have call successors, (4420), 1233 states have call predecessors, (4420), 1324 states have return successors, (4739), 4307 states have call predecessors, (4739), 4419 states have call successors, (4739) [2022-07-14 00:10:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21514 states to 21514 states and 29368 transitions. [2022-07-14 00:10:31,062 INFO L78 Accepts]: Start accepts. Automaton has 21514 states and 29368 transitions. Word has length 137 [2022-07-14 00:10:31,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:31,063 INFO L495 AbstractCegarLoop]: Abstraction has 21514 states and 29368 transitions. [2022-07-14 00:10:31,064 INFO L496 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) [2022-07-14 00:10:31,064 INFO L276 IsEmpty]: Start isEmpty. Operand 21514 states and 29368 transitions. [2022-07-14 00:10:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-14 00:10:31,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:31,071 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:31,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:10:31,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:31,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -756334801, now seen corresponding path program 1 times [2022-07-14 00:10:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:31,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910725430] [2022-07-14 00:10:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:31,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 00:10:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:10:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:10:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:10:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-14 00:10:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910725430] [2022-07-14 00:10:31,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910725430] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088029058] [2022-07-14 00:10:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:31,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:31,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 00:10:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:32,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:10:32,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 00:10:32,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:10:32,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088029058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:32,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:10:32,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-14 00:10:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588965629] [2022-07-14 00:10:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:32,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:10:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:10:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:10:32,195 INFO L87 Difference]: Start difference. First operand 21514 states and 29368 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) [2022-07-14 00:10:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:33,595 INFO L93 Difference]: Finished difference Result 64530 states and 88098 transitions. [2022-07-14 00:10:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:10:33,596 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 [2022-07-14 00:10:33,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:33,779 INFO L225 Difference]: With dead ends: 64530 [2022-07-14 00:10:33,779 INFO L226 Difference]: Without dead ends: 43026 [2022-07-14 00:10:33,837 INFO L412 NwaCegarLoop]: 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 [2022-07-14 00:10:33,838 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1106 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:33,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 4358 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 00:10:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43026 states. [2022-07-14 00:10:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43026 to 43018. [2022-07-14 00:10:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43018 states, 31529 states have (on average 1.2816454692505312) internal successors, (40409), 32229 states have internal predecessors, (40409), 8836 states have call successors, (8836), 2465 states have call predecessors, (8836), 2652 states have return successors, (9443), 8611 states have call predecessors, (9443), 8835 states have call successors, (9443) [2022-07-14 00:10:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43018 states to 43018 states and 58688 transitions. [2022-07-14 00:10:35,240 INFO L78 Accepts]: Start accepts. Automaton has 43018 states and 58688 transitions. Word has length 138 [2022-07-14 00:10:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:35,240 INFO L495 AbstractCegarLoop]: Abstraction has 43018 states and 58688 transitions. [2022-07-14 00:10:35,240 INFO L496 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) [2022-07-14 00:10:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 43018 states and 58688 transitions. [2022-07-14 00:10:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-14 00:10:35,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:35,246 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:35,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-14 00:10:35,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:35,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 841584681, now seen corresponding path program 1 times [2022-07-14 00:10:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:35,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745621450] [2022-07-14 00:10:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 00:10:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:10:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:10:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:10:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-14 00:10:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:35,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745621450] [2022-07-14 00:10:35,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745621450] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:35,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511195124] [2022-07-14 00:10:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:35,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:35,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:35,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:35,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 00:10:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:36,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:10:36,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 00:10:36,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:10:36,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511195124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:10:36,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:10:36,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-07-14 00:10:36,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767326561] [2022-07-14 00:10:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:10:36,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:10:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:10:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:10:36,364 INFO L87 Difference]: Start difference. First operand 43018 states and 58688 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) [2022-07-14 00:10:38,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:38,803 INFO L93 Difference]: Finished difference Result 129042 states and 176058 transitions. [2022-07-14 00:10:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:10:38,803 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 [2022-07-14 00:10:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:39,110 INFO L225 Difference]: With dead ends: 129042 [2022-07-14 00:10:39,110 INFO L226 Difference]: Without dead ends: 85470 [2022-07-14 00:10:39,207 INFO L412 NwaCegarLoop]: 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 [2022-07-14 00:10:39,208 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1105 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 4167 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 [2022-07-14 00:10:39,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 4167 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 00:10:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85470 states. [2022-07-14 00:10:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85470 to 85460. [2022-07-14 00:10:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85460 states, 62615 states have (on average 1.2817535734248982) internal successors, (80257), 64003 states have internal predecessors, (80257), 17590 states have call successors, (17590), 4891 states have call predecessors, (17590), 5254 states have return successors, (18706), 17139 states have call predecessors, (18706), 17589 states have call successors, (18706) [2022-07-14 00:10:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85460 states to 85460 states and 116553 transitions. [2022-07-14 00:10:42,001 INFO L78 Accepts]: Start accepts. Automaton has 85460 states and 116553 transitions. Word has length 139 [2022-07-14 00:10:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:10:42,001 INFO L495 AbstractCegarLoop]: Abstraction has 85460 states and 116553 transitions. [2022-07-14 00:10:42,002 INFO L496 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) [2022-07-14 00:10:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 85460 states and 116553 transitions. [2022-07-14 00:10:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-14 00:10:42,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:10:42,007 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:10:42,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 00:10:42,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:42,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:10:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:10:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash 94199557, now seen corresponding path program 1 times [2022-07-14 00:10:42,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:10:42,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071701925] [2022-07-14 00:10:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:42,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:10:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:10:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:10:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:10:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:10:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:10:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:10:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:10:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:10:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:10:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:10:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:10:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-14 00:10:42,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:10:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071701925] [2022-07-14 00:10:42,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071701925] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:10:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551582026] [2022-07-14 00:10:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:10:42,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:10:42,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:10:42,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:10:42,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 00:10:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:10:43,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 00:10:43,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:10:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-14 00:10:43,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:10:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-14 00:10:43,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551582026] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:10:43,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:10:43,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2022-07-14 00:10:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460071930] [2022-07-14 00:10:43,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:10:43,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 00:10:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:10:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 00:10:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:10:43,741 INFO L87 Difference]: Start difference. First operand 85460 states and 116553 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) [2022-07-14 00:10:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:10:56,453 INFO L93 Difference]: Finished difference Result 252988 states and 355512 transitions. [2022-07-14 00:10:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-14 00:10:56,453 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 [2022-07-14 00:10:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:10:57,275 INFO L225 Difference]: With dead ends: 252988 [2022-07-14 00:10:57,275 INFO L226 Difference]: Without dead ends: 166692 [2022-07-14 00:10:57,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2022-07-14 00:10:57,501 INFO L413 NwaCegarLoop]: 2409 mSDtfsCounter, 2733 mSDsluCounter, 17315 mSDsCounter, 0 mSdLazyCounter, 12855 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3108 SdHoareTripleChecker+Valid, 19724 SdHoareTripleChecker+Invalid, 13828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 12855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:10:57,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3108 Valid, 19724 Invalid, 13828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [973 Valid, 12855 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-14 00:10:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166692 states. [2022-07-14 00:11:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166692 to 132402. [2022-07-14 00:11:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132402 states, 96821 states have (on average 1.2711395255161586) internal successors, (123073), 99293 states have internal predecessors, (123073), 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) [2022-07-14 00:11:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132402 states to 132402 states and 181122 transitions. [2022-07-14 00:11:03,238 INFO L78 Accepts]: Start accepts. Automaton has 132402 states and 181122 transitions. Word has length 148 [2022-07-14 00:11:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:11:03,239 INFO L495 AbstractCegarLoop]: Abstraction has 132402 states and 181122 transitions. [2022-07-14 00:11:03,239 INFO L496 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) [2022-07-14 00:11:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 132402 states and 181122 transitions. [2022-07-14 00:11:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-14 00:11:03,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:11:03,246 INFO L195 NwaCegarLoop]: 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] [2022-07-14 00:11:03,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 00:11:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:11:03,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:11:03,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:11:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash 286366410, now seen corresponding path program 1 times [2022-07-14 00:11:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:11:03,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452661418] [2022-07-14 00:11:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:11:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:11:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:11:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:11:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:11:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 00:11:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:11:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:11:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:11:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:11:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:11:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:11:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:11:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:11:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:11:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:11:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:11:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:11:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:11:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:11:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-14 00:11:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-14 00:11:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:11:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452661418] [2022-07-14 00:11:03,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452661418] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:11:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563105248] [2022-07-14 00:11:03,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:11:03,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:11:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:11:03,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:11:03,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 00:11:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:04,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 00:11:04,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:11:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-14 00:11:04,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:11:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-14 00:11:04,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563105248] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:11:04,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:11:04,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2022-07-14 00:11:04,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244334190] [2022-07-14 00:11:04,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:11:04,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-14 00:11:04,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:11:04,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-14 00:11:04,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-07-14 00:11:04,768 INFO L87 Difference]: Start difference. First operand 132402 states and 181122 transitions. Second operand has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2022-07-14 00:11:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:11:25,060 INFO L93 Difference]: Finished difference Result 343762 states and 481113 transitions. [2022-07-14 00:11:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-14 00:11:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) Word has length 165 [2022-07-14 00:11:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:11:26,019 INFO L225 Difference]: With dead ends: 343762 [2022-07-14 00:11:26,019 INFO L226 Difference]: Without dead ends: 210588 [2022-07-14 00:11:26,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=770, Invalid=4930, Unknown=0, NotChecked=0, Total=5700 [2022-07-14 00:11:26,536 INFO L413 NwaCegarLoop]: 2649 mSDtfsCounter, 9246 mSDsluCounter, 21422 mSDsCounter, 0 mSdLazyCounter, 18952 mSolverCounterSat, 4498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9784 SdHoareTripleChecker+Valid, 24071 SdHoareTripleChecker+Invalid, 23450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4498 IncrementalHoareTripleChecker+Valid, 18952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:11:26,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9784 Valid, 24071 Invalid, 23450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4498 Valid, 18952 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-07-14 00:11:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210588 states. [2022-07-14 00:11:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210588 to 132250. [2022-07-14 00:11:31,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132250 states, 96577 states have (on average 1.2670200979529287) internal successors, (122365), 98985 states have internal predecessors, (122365), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8440 states have return successors, (31003), 26815 states have call predecessors, (31003), 27231 states have call successors, (31003) [2022-07-14 00:11:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132250 states to 132250 states and 180600 transitions. [2022-07-14 00:11:32,644 INFO L78 Accepts]: Start accepts. Automaton has 132250 states and 180600 transitions. Word has length 165 [2022-07-14 00:11:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:11:32,644 INFO L495 AbstractCegarLoop]: Abstraction has 132250 states and 180600 transitions. [2022-07-14 00:11:32,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2022-07-14 00:11:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 132250 states and 180600 transitions. [2022-07-14 00:11:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-14 00:11:32,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:11:32,652 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:11:32,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 00:11:32,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:11:32,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:11:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:11:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1625373719, now seen corresponding path program 1 times [2022-07-14 00:11:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:11:32,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846806353] [2022-07-14 00:11:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:11:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:11:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:11:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:11:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:11:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 00:11:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 00:11:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:11:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:11:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:11:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:11:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:11:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:11:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:11:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-14 00:11:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-14 00:11:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 00:11:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:11:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:11:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:11:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:11:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:11:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-14 00:11:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:11:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846806353] [2022-07-14 00:11:33,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846806353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:11:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024786121] [2022-07-14 00:11:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:11:33,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:11:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:11:33,125 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:11:33,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 00:11:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:11:33,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 00:11:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:11:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-14 00:11:33,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:11:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-14 00:11:33,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024786121] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:11:33,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:11:33,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 21 [2022-07-14 00:11:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554614621] [2022-07-14 00:11:33,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:11:33,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-14 00:11:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:11:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-14 00:11:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-14 00:11:33,919 INFO L87 Difference]: Start difference. First operand 132250 states and 180600 transitions. Second operand has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 15 states have internal predecessors, (211), 8 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (38), 9 states have call predecessors, (38), 7 states have call successors, (38)