./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.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 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:16:07,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:16:07,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:16:07,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:16:07,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:16:07,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:16:07,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:16:07,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:16:07,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:16:07,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:16:07,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:16:07,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:16:07,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:16:07,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:16:07,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:16:07,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:16:07,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:16:07,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:16:07,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:16:07,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:16:07,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:16:07,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:16:07,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:16:07,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:16:07,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:16:07,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:16:07,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:16:07,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:16:07,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:16:07,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:16:07,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:16:07,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:16:07,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:16:07,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:16:07,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:16:07,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:16:07,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:16:07,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:16:07,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:16:07,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:16:07,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:16:07,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:16:07,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:16:07,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:16:07,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:16:07,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:16:07,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:16:07,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:16:07,685 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:16:07,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:16:07,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:16:07,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:16:07,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:16:07,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:16:07,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:16:07,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:16:07,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:16:07,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:16:07,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:16:07,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:16:07,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:16:07,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:16:07,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:16:07,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:16:07,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:16:07,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:16:07,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:16:07,688 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:16:07,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:16:07,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:16:07,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:16:07,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 [2021-11-07 14:16:07,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:16:07,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:16:07,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:16:07,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:16:07,886 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:16:07,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-07 14:16:07,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da9ee42a/0f070efee7254eada58998f3854e8fc5/FLAG5f6624f29 [2021-11-07 14:16:08,472 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:16:08,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-07 14:16:08,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da9ee42a/0f070efee7254eada58998f3854e8fc5/FLAG5f6624f29 [2021-11-07 14:16:08,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da9ee42a/0f070efee7254eada58998f3854e8fc5 [2021-11-07 14:16:08,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:16:08,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:16:08,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:16:08,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:16:08,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:16:08,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:08" (1/1) ... [2021-11-07 14:16:08,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c61ae8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:08, skipping insertion in model container [2021-11-07 14:16:08,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:08" (1/1) ... [2021-11-07 14:16:08,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:16:08,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:16:09,939 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-07 14:16:09,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:16:10,004 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:16:10,212 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-07 14:16:10,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:16:10,294 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:16:10,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10 WrapperNode [2021-11-07 14:16:10,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:16:10,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:16:10,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:16:10,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:16:10,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:10,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:13,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:16:13,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:16:13,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:16:13,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:16:13,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:13,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:14,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:14,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:15,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:16,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:16,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:16,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:16:16,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:16:16,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:16:16,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:16:16,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (1/1) ... [2021-11-07 14:16:16,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:16:16,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:16:16,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 14:16:17,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 14:16:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 14:16:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ctr [2021-11-07 14:16:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ctr [2021-11-07 14:16:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure parse_path_selector [2021-11-07 14:16:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_path_selector [2021-11-07 14:16:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_dtr [2021-11-07 14:16:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_dtr [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure free_priority_group [2021-11-07 14:16:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure free_priority_group [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:16:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:16:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-07 14:16:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-07 14:16:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:16:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 14:16:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure parse_priority_group [2021-11-07 14:16:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_priority_group [2021-11-07 14:16:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:16:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:16:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure free_multipath [2021-11-07 14:16:17,044 INFO L138 BoogieDeclarations]: Found implementation of procedure free_multipath [2021-11-07 14:16:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-07 14:16:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:16:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:16:17,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:16:58,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:16:58,818 INFO L299 CfgBuilder]: Removed 26179 assume(true) statements. [2021-11-07 14:16:58,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:58 BoogieIcfgContainer [2021-11-07 14:16:58,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:16:58,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:16:58,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:16:58,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:16:58,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:08" (1/3) ... [2021-11-07 14:16:58,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7a4443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:58, skipping insertion in model container [2021-11-07 14:16:58,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:10" (2/3) ... [2021-11-07 14:16:58,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7a4443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:58, skipping insertion in model container [2021-11-07 14:16:58,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:58" (3/3) ... [2021-11-07 14:16:58,845 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-07 14:16:58,853 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:16:58,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 14:16:58,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:16:58,965 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 14:16:58,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 14:16:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 26703 states, 26675 states have (on average 1.4164948453608248) internal successors, (37785), 26680 states have internal predecessors, (37785), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 14:16:59,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 14:16:59,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:16:59,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:16:59,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:16:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:16:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1949403803, now seen corresponding path program 1 times [2021-11-07 14:16:59,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:16:59,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708002337] [2021-11-07 14:16:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:16:59,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:16:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:16:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:16:59,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:16:59,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708002337] [2021-11-07 14:16:59,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708002337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:16:59,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:16:59,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:16:59,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467389851] [2021-11-07 14:16:59,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:16:59,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:16:59,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:16:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:16:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:16:59,879 INFO L87 Difference]: Start difference. First operand has 26703 states, 26675 states have (on average 1.4164948453608248) internal successors, (37785), 26680 states have internal predecessors, (37785), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:17:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:17:00,459 INFO L93 Difference]: Finished difference Result 53402 states and 75640 transitions. [2021-11-07 14:17:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:17:00,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 14:17:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:17:00,588 INFO L225 Difference]: With dead ends: 53402 [2021-11-07 14:17:00,589 INFO L226 Difference]: Without dead ends: 26689 [2021-11-07 14:17:00,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:17:00,668 INFO L933 BasicCegarLoop]: 37722 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37722 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:17:00,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37722 Invalid, 0 Unknown, 0 Unchecked, 58.86ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:17:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26689 states. [2021-11-07 14:17:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26689 to 26689. [2021-11-07 14:17:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26689 states, 26662 states have (on average 1.4127972395169155) internal successors, (37668), 26666 states have internal predecessors, (37668), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 14:17:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26689 states to 26689 states and 37698 transitions. [2021-11-07 14:17:01,291 INFO L78 Accepts]: Start accepts. Automaton has 26689 states and 37698 transitions. Word has length 96 [2021-11-07 14:17:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:17:01,291 INFO L470 AbstractCegarLoop]: Abstraction has 26689 states and 37698 transitions. [2021-11-07 14:17:01,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:17:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 26689 states and 37698 transitions. [2021-11-07 14:17:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 14:17:01,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:17:01,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:17:01,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:17:01,296 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:17:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:17:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash 329765497, now seen corresponding path program 1 times [2021-11-07 14:17:01,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:17:01,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683153681] [2021-11-07 14:17:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:17:01,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:17:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:17:01,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:17:01,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683153681] [2021-11-07 14:17:01,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683153681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:17:01,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:17:01,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:17:01,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855736227] [2021-11-07 14:17:01,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:17:01,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:17:01,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:17:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:17:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:17:01,533 INFO L87 Difference]: Start difference. First operand 26689 states and 37698 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:17:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:17:02,969 INFO L93 Difference]: Finished difference Result 79902 states and 112932 transitions. [2021-11-07 14:17:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:17:02,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 14:17:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:17:03,102 INFO L225 Difference]: With dead ends: 79902 [2021-11-07 14:17:03,102 INFO L226 Difference]: Without dead ends: 49118 [2021-11-07 14:17:03,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:17:03,171 INFO L933 BasicCegarLoop]: 37712 mSDtfsCounter, 37594 mSDsluCounter, 37602 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37594 SdHoareTripleChecker+Valid, 75314 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.33ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.13ms IncrementalHoareTripleChecker+Time [2021-11-07 14:17:03,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37594 Valid, 75314 Invalid, 20 Unknown, 0 Unchecked, 82.33ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 26.13ms Time] [2021-11-07 14:17:03,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49118 states. [2021-11-07 14:17:04,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49118 to 49112. [2021-11-07 14:17:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49112 states, 49062 states have (on average 1.4136398842281195) internal successors, (69356), 49067 states have internal predecessors, (69356), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-07 14:17:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49112 states to 49112 states and 69421 transitions. [2021-11-07 14:17:04,258 INFO L78 Accepts]: Start accepts. Automaton has 49112 states and 69421 transitions. Word has length 96 [2021-11-07 14:17:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:17:04,261 INFO L470 AbstractCegarLoop]: Abstraction has 49112 states and 69421 transitions. [2021-11-07 14:17:04,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:17:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 49112 states and 69421 transitions. [2021-11-07 14:17:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 14:17:04,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:17:04,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:17:04,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:17:04,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:17:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:17:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1857091770, now seen corresponding path program 1 times [2021-11-07 14:17:04,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:17:04,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379122341] [2021-11-07 14:17:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:17:04,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:17:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-07 14:17:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:17:04,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:17:04,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379122341] [2021-11-07 14:17:04,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379122341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:17:04,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:17:04,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:17:04,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395062849] [2021-11-07 14:17:04,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:17:04,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:17:04,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:17:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:17:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:17:04,541 INFO L87 Difference]: Start difference. First operand 49112 states and 69421 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:17:06,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:17:19,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:17:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:17:39,255 INFO L93 Difference]: Finished difference Result 107766 states and 152294 transitions. [2021-11-07 14:17:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:17:39,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-11-07 14:17:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:17:39,531 INFO L225 Difference]: With dead ends: 107766 [2021-11-07 14:17:39,531 INFO L226 Difference]: Without dead ends: 58734 [2021-11-07 14:17:39,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.39ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:17:39,625 INFO L933 BasicCegarLoop]: 43560 mSDtfsCounter, 9845 mSDsluCounter, 61107 mSDsCounter, 0 mSdLazyCounter, 20104 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29033.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 104667 SdHoareTripleChecker+Invalid, 20124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 218.43ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 20104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33045.53ms IncrementalHoareTripleChecker+Time [2021-11-07 14:17:39,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9845 Valid, 104667 Invalid, 20124 Unknown, 0 Unchecked, 218.43ms Time], IncrementalHoareTripleChecker [19 Valid, 20104 Invalid, 1 Unknown, 0 Unchecked, 33045.53ms Time] [2021-11-07 14:17:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58734 states. [2021-11-07 14:17:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58734 to 54446. [2021-11-07 14:17:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54446 states, 54396 states have (on average 1.4132656813000957) internal successors, (76876), 54401 states have internal predecessors, (76876), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-07 14:17:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54446 states to 54446 states and 76941 transitions. [2021-11-07 14:17:40,896 INFO L78 Accepts]: Start accepts. Automaton has 54446 states and 76941 transitions. Word has length 127 [2021-11-07 14:17:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:17:40,898 INFO L470 AbstractCegarLoop]: Abstraction has 54446 states and 76941 transitions. [2021-11-07 14:17:40,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:17:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 54446 states and 76941 transitions. [2021-11-07 14:17:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 14:17:40,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:17:40,935 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:17:40,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:17:40,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:17:40,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:17:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash 973103075, now seen corresponding path program 1 times [2021-11-07 14:17:40,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:17:40,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736129723] [2021-11-07 14:17:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:17:40,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:17:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:41,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-07 14:17:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:17:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:17:41,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:17:41,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736129723] [2021-11-07 14:17:41,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736129723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:17:41,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:17:41,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:17:41,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484789194] [2021-11-07 14:17:41,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:17:41,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:17:41,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:17:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:17:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:17:41,176 INFO L87 Difference]: Start difference. First operand 54446 states and 76941 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:17:43,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:17:45,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:18:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:18:11,657 INFO L93 Difference]: Finished difference Result 108938 states and 153952 transitions. [2021-11-07 14:18:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:18:11,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-11-07 14:18:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:18:11,919 INFO L225 Difference]: With dead ends: 108938 [2021-11-07 14:18:11,919 INFO L226 Difference]: Without dead ends: 54566 [2021-11-07 14:18:11,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.37ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:18:12,001 INFO L933 BasicCegarLoop]: 37676 mSDtfsCounter, 132 mSDsluCounter, 95946 mSDsCounter, 0 mSdLazyCounter, 17210 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25607.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 133622 SdHoareTripleChecker+Invalid, 17230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 173.90ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17210 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28969.04ms IncrementalHoareTripleChecker+Time [2021-11-07 14:18:12,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 133622 Invalid, 17230 Unknown, 0 Unchecked, 173.90ms Time], IncrementalHoareTripleChecker [18 Valid, 17210 Invalid, 2 Unknown, 0 Unchecked, 28969.04ms Time] [2021-11-07 14:18:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54566 states. [2021-11-07 14:18:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54566 to 54449. [2021-11-07 14:18:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54449 states, 54399 states have (on average 1.413206125112594) internal successors, (76877), 54404 states have internal predecessors, (76877), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-07 14:18:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54449 states to 54449 states and 76942 transitions. [2021-11-07 14:18:13,206 INFO L78 Accepts]: Start accepts. Automaton has 54449 states and 76942 transitions. Word has length 145 [2021-11-07 14:18:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:18:13,207 INFO L470 AbstractCegarLoop]: Abstraction has 54449 states and 76942 transitions. [2021-11-07 14:18:13,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:18:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 54449 states and 76942 transitions. [2021-11-07 14:18:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 14:18:13,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:18:13,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:18:13,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 14:18:13,244 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:18:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:18:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1398270742, now seen corresponding path program 1 times [2021-11-07 14:18:13,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:18:13,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532066389] [2021-11-07 14:18:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:18:13,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:18:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-07 14:18:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:18:13,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:18:13,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532066389] [2021-11-07 14:18:13,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532066389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:18:13,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:18:13,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 14:18:13,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054201755] [2021-11-07 14:18:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:18:13,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 14:18:13,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:18:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 14:18:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:18:13,575 INFO L87 Difference]: Start difference. First operand 54449 states and 76942 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:18:15,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:18:17,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:18:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:18:45,970 INFO L93 Difference]: Finished difference Result 108952 states and 153962 transitions. [2021-11-07 14:18:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 14:18:45,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-11-07 14:18:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:18:46,094 INFO L225 Difference]: With dead ends: 108952 [2021-11-07 14:18:46,094 INFO L226 Difference]: Without dead ends: 54573 [2021-11-07 14:18:46,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.44ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 14:18:46,174 INFO L933 BasicCegarLoop]: 37678 mSDtfsCounter, 138 mSDsluCounter, 133619 mSDsCounter, 0 mSdLazyCounter, 17278 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27428.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 171297 SdHoareTripleChecker+Invalid, 17298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 202.46ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17278 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30912.78ms IncrementalHoareTripleChecker+Time [2021-11-07 14:18:46,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 171297 Invalid, 17298 Unknown, 0 Unchecked, 202.46ms Time], IncrementalHoareTripleChecker [18 Valid, 17278 Invalid, 2 Unknown, 0 Unchecked, 30912.78ms Time] [2021-11-07 14:18:46,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54573 states. [2021-11-07 14:18:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54573 to 54451. [2021-11-07 14:18:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54451 states, 54401 states have (on average 1.4131541699601111) internal successors, (76877), 54406 states have internal predecessors, (76877), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-07 14:18:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54451 states to 54451 states and 76942 transitions. [2021-11-07 14:18:47,201 INFO L78 Accepts]: Start accepts. Automaton has 54451 states and 76942 transitions. Word has length 149 [2021-11-07 14:18:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:18:47,201 INFO L470 AbstractCegarLoop]: Abstraction has 54451 states and 76942 transitions. [2021-11-07 14:18:47,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:18:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 54451 states and 76942 transitions. [2021-11-07 14:18:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 14:18:47,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:18:47,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:18:47,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:18:47,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:18:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:18:47,244 INFO L85 PathProgramCache]: Analyzing trace with hash -611164369, now seen corresponding path program 1 times [2021-11-07 14:18:47,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:18:47,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373306238] [2021-11-07 14:18:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:18:47,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:18:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-07 14:18:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:18:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:18:47,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:18:47,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373306238] [2021-11-07 14:18:47,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373306238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:18:47,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:18:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 14:18:47,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351970916] [2021-11-07 14:18:47,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:18:47,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 14:18:47,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:18:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 14:18:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:18:47,526 INFO L87 Difference]: Start difference. First operand 54451 states and 76942 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:18:49,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:19:02,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:19:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:19:32,969 INFO L93 Difference]: Finished difference Result 134274 states and 190055 transitions. [2021-11-07 14:19:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 14:19:32,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-11-07 14:19:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:19:33,160 INFO L225 Difference]: With dead ends: 134274 [2021-11-07 14:19:33,160 INFO L226 Difference]: Without dead ends: 79895 [2021-11-07 14:19:33,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 78.60ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 14:19:33,257 INFO L933 BasicCegarLoop]: 57051 mSDtfsCounter, 20794 mSDsluCounter, 182839 mSDsCounter, 0 mSdLazyCounter, 26182 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37943.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20799 SdHoareTripleChecker+Valid, 239890 SdHoareTripleChecker+Invalid, 26228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 339.44ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 26182 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43030.27ms IncrementalHoareTripleChecker+Time [2021-11-07 14:19:33,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20799 Valid, 239890 Invalid, 26228 Unknown, 0 Unchecked, 339.44ms Time], IncrementalHoareTripleChecker [45 Valid, 26182 Invalid, 1 Unknown, 0 Unchecked, 43030.27ms Time] [2021-11-07 14:19:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2021-11-07 14:19:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 54454. [2021-11-07 14:19:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54454 states, 54404 states have (on average 1.4130946253951915) internal successors, (76878), 54409 states have internal predecessors, (76878), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-07 14:19:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54454 states to 54454 states and 76943 transitions. [2021-11-07 14:19:34,485 INFO L78 Accepts]: Start accepts. Automaton has 54454 states and 76943 transitions. Word has length 149 [2021-11-07 14:19:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:19:34,486 INFO L470 AbstractCegarLoop]: Abstraction has 54454 states and 76943 transitions. [2021-11-07 14:19:34,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:19:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 54454 states and 76943 transitions. [2021-11-07 14:19:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 14:19:34,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:19:34,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:19:34,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:19:34,536 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:19:34,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:19:34,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1983069607, now seen corresponding path program 1 times [2021-11-07 14:19:34,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:19:34,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499107427] [2021-11-07 14:19:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:19:34,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:19:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:19:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-07 14:19:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:19:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 14:19:34,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:19:34,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499107427] [2021-11-07 14:19:34,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499107427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:19:34,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:19:34,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 14:19:34,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432235238] [2021-11-07 14:19:34,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:19:34,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 14:19:34,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:19:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 14:19:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 14:19:34,876 INFO L87 Difference]: Start difference. First operand 54454 states and 76943 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 9 states have internal predecessors, (148), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:19:36,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:20:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:20:05,455 INFO L93 Difference]: Finished difference Result 109231 states and 154369 transitions. [2021-11-07 14:20:05,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 14:20:05,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 9 states have internal predecessors, (148), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-11-07 14:20:05,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:20:05,578 INFO L225 Difference]: With dead ends: 109231 [2021-11-07 14:20:05,578 INFO L226 Difference]: Without dead ends: 54857 [2021-11-07 14:20:05,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 223.89ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-07 14:20:05,676 INFO L933 BasicCegarLoop]: 37761 mSDtfsCounter, 444 mSDsluCounter, 284743 mSDsCounter, 0 mSdLazyCounter, 17700 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25297.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 322504 SdHoareTripleChecker+Invalid, 17737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 263.64ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 17700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28712.07ms IncrementalHoareTripleChecker+Time [2021-11-07 14:20:05,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 322504 Invalid, 17737 Unknown, 0 Unchecked, 263.64ms Time], IncrementalHoareTripleChecker [36 Valid, 17700 Invalid, 1 Unknown, 0 Unchecked, 28712.07ms Time] [2021-11-07 14:20:05,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54857 states. [2021-11-07 14:20:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54857 to 54472. [2021-11-07 14:20:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54472 states, 54421 states have (on average 1.412965583138862) internal successors, (76895), 54427 states have internal predecessors, (76895), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:20:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54472 states to 54472 states and 76962 transitions. [2021-11-07 14:20:06,733 INFO L78 Accepts]: Start accepts. Automaton has 54472 states and 76962 transitions. Word has length 155 [2021-11-07 14:20:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:20:06,734 INFO L470 AbstractCegarLoop]: Abstraction has 54472 states and 76962 transitions. [2021-11-07 14:20:06,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 9 states have internal predecessors, (148), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:20:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 54472 states and 76962 transitions. [2021-11-07 14:20:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 14:20:06,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:20:06,785 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:20:06,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 14:20:06,786 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:20:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:20:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash -179505297, now seen corresponding path program 1 times [2021-11-07 14:20:06,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:20:06,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078429427] [2021-11-07 14:20:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:20:06,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:20:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:20:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-07 14:20:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:20:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 14:20:07,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:20:07,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078429427] [2021-11-07 14:20:07,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078429427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:20:07,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:20:07,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:20:07,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764764145] [2021-11-07 14:20:07,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:20:07,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:20:07,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:20:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:20:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:20:07,323 INFO L87 Difference]: Start difference. First operand 54472 states and 76962 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:20:09,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:20:38,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:20:38,039 INFO L93 Difference]: Finished difference Result 109033 states and 154085 transitions. [2021-11-07 14:20:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 14:20:38,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-11-07 14:20:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:20:38,148 INFO L225 Difference]: With dead ends: 109033 [2021-11-07 14:20:38,148 INFO L226 Difference]: Without dead ends: 54641 [2021-11-07 14:20:38,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 117.16ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 14:20:38,228 INFO L933 BasicCegarLoop]: 37698 mSDtfsCounter, 159 mSDsluCounter, 95960 mSDsCounter, 0 mSdLazyCounter, 17228 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25682.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 133658 SdHoareTripleChecker+Invalid, 17245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 181.75ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 17228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29026.76ms IncrementalHoareTripleChecker+Time [2021-11-07 14:20:38,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 133658 Invalid, 17245 Unknown, 0 Unchecked, 181.75ms Time], IncrementalHoareTripleChecker [16 Valid, 17228 Invalid, 1 Unknown, 0 Unchecked, 29026.76ms Time] [2021-11-07 14:20:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54641 states. [2021-11-07 14:20:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54641 to 54476. [2021-11-07 14:20:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54476 states, 54425 states have (on average 1.4129352319706017) internal successors, (76899), 54431 states have internal predecessors, (76899), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:20:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54476 states to 54476 states and 76966 transitions. [2021-11-07 14:20:39,307 INFO L78 Accepts]: Start accepts. Automaton has 54476 states and 76966 transitions. Word has length 161 [2021-11-07 14:20:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:20:39,308 INFO L470 AbstractCegarLoop]: Abstraction has 54476 states and 76966 transitions. [2021-11-07 14:20:39,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:20:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 54476 states and 76966 transitions. [2021-11-07 14:20:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 14:20:39,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:20:39,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:20:39,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 14:20:39,352 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:20:39,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:20:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1014349614, now seen corresponding path program 1 times [2021-11-07 14:20:39,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:20:39,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381162558] [2021-11-07 14:20:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:20:39,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:20:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:20:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-07 14:20:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:20:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 14:20:39,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:20:39,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381162558] [2021-11-07 14:20:39,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381162558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:20:39,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:20:39,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:20:39,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666363185] [2021-11-07 14:20:39,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:20:39,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:20:39,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:20:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:20:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:20:40,000 INFO L87 Difference]: Start difference. First operand 54476 states and 76966 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:20:42,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:21:10,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:21:10,079 INFO L93 Difference]: Finished difference Result 109022 states and 154036 transitions. [2021-11-07 14:21:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:21:10,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2021-11-07 14:21:10,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:21:10,194 INFO L225 Difference]: With dead ends: 109022 [2021-11-07 14:21:10,194 INFO L226 Difference]: Without dead ends: 54598 [2021-11-07 14:21:10,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.39ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:21:10,272 INFO L933 BasicCegarLoop]: 37672 mSDtfsCounter, 123 mSDsluCounter, 58224 mSDsCounter, 0 mSdLazyCounter, 17194 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25034.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 95896 SdHoareTripleChecker+Invalid, 17224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 167.28ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 17194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28482.76ms IncrementalHoareTripleChecker+Time [2021-11-07 14:21:10,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 95896 Invalid, 17224 Unknown, 0 Unchecked, 167.28ms Time], IncrementalHoareTripleChecker [29 Valid, 17194 Invalid, 1 Unknown, 0 Unchecked, 28482.76ms Time] [2021-11-07 14:21:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54598 states. [2021-11-07 14:21:11,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54598 to 54483. [2021-11-07 14:21:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54483 states, 54432 states have (on average 1.412882128159906) internal successors, (76906), 54438 states have internal predecessors, (76906), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:21:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54483 states to 54483 states and 76973 transitions. [2021-11-07 14:21:11,371 INFO L78 Accepts]: Start accepts. Automaton has 54483 states and 76973 transitions. Word has length 163 [2021-11-07 14:21:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:21:11,371 INFO L470 AbstractCegarLoop]: Abstraction has 54483 states and 76973 transitions. [2021-11-07 14:21:11,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:21:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 54483 states and 76973 transitions. [2021-11-07 14:21:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-07 14:21:11,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:21:11,397 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:21:11,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 14:21:11,397 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:21:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:21:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2043892463, now seen corresponding path program 1 times [2021-11-07 14:21:11,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:21:11,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383143192] [2021-11-07 14:21:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:21:11,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:21:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:21:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-07 14:21:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:21:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:21:12,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:21:12,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383143192] [2021-11-07 14:21:12,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383143192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:21:12,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305721130] [2021-11-07 14:21:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:21:12,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:21:12,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:21:12,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:21:12,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:22:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:22:10,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 14:22:10,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:22:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:22:10,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:22:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 14:22:10,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305721130] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 14:22:10,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 14:22:10,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2021-11-07 14:22:10,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554541314] [2021-11-07 14:22:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:22:10,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:22:10,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:22:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:22:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:22:10,850 INFO L87 Difference]: Start difference. First operand 54483 states and 76973 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:22:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:22:11,933 INFO L93 Difference]: Finished difference Result 108932 states and 153932 transitions. [2021-11-07 14:22:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:22:11,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 170 [2021-11-07 14:22:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:22:12,046 INFO L225 Difference]: With dead ends: 108932 [2021-11-07 14:22:12,047 INFO L226 Difference]: Without dead ends: 54505 [2021-11-07 14:22:12,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.34ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:22:12,142 INFO L933 BasicCegarLoop]: 37679 mSDtfsCounter, 0 mSDsluCounter, 37641 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75320 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.43ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.37ms IncrementalHoareTripleChecker+Time [2021-11-07 14:22:12,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75320 Invalid, 86 Unknown, 0 Unchecked, 39.43ms Time], IncrementalHoareTripleChecker [29 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 127.37ms Time] [2021-11-07 14:22:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54505 states. [2021-11-07 14:22:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54505 to 54505. [2021-11-07 14:22:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54505 states, 54454 states have (on average 1.4127153193521138) internal successors, (76928), 54460 states have internal predecessors, (76928), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:22:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54505 states to 54505 states and 76995 transitions. [2021-11-07 14:22:13,384 INFO L78 Accepts]: Start accepts. Automaton has 54505 states and 76995 transitions. Word has length 170 [2021-11-07 14:22:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:22:13,385 INFO L470 AbstractCegarLoop]: Abstraction has 54505 states and 76995 transitions. [2021-11-07 14:22:13,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:22:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 54505 states and 76995 transitions. [2021-11-07 14:22:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-07 14:22:13,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:22:13,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:22:13,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 14:22:13,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 14:22:13,626 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:22:13,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:22:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1623452645, now seen corresponding path program 1 times [2021-11-07 14:22:13,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:22:13,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484909161] [2021-11-07 14:22:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:22:13,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:22:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:22:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-07 14:22:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:22:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 14:22:14,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:22:14,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484909161] [2021-11-07 14:22:14,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484909161] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:22:14,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283337294] [2021-11-07 14:22:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:22:14,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:22:14,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:22:14,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:22:14,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 14:22:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:22:53,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 14:22:53,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:22:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 14:22:53,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:22:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 14:22:53,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283337294] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:22:53,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:22:53,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-07 14:22:53,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375675681] [2021-11-07 14:22:53,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:22:53,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 14:22:53,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:22:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 14:22:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 14:22:53,927 INFO L87 Difference]: Start difference. First operand 54505 states and 76995 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 14:22:55,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:23:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:23:28,904 INFO L93 Difference]: Finished difference Result 109115 states and 154165 transitions. [2021-11-07 14:23:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 14:23:28,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2021-11-07 14:23:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:23:29,012 INFO L225 Difference]: With dead ends: 109115 [2021-11-07 14:23:29,013 INFO L226 Difference]: Without dead ends: 54663 [2021-11-07 14:23:29,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 120.49ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 14:23:29,091 INFO L933 BasicCegarLoop]: 37660 mSDtfsCounter, 23056 mSDsluCounter, 72903 mSDsCounter, 0 mSdLazyCounter, 17373 mSolverCounterSat, 154 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29508.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23061 SdHoareTripleChecker+Valid, 110563 SdHoareTripleChecker+Invalid, 17528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 198.79ms SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 17373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33240.09ms IncrementalHoareTripleChecker+Time [2021-11-07 14:23:29,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23061 Valid, 110563 Invalid, 17528 Unknown, 0 Unchecked, 198.79ms Time], IncrementalHoareTripleChecker [154 Valid, 17373 Invalid, 1 Unknown, 0 Unchecked, 33240.09ms Time] [2021-11-07 14:23:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54663 states. [2021-11-07 14:23:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54663 to 54548. [2021-11-07 14:23:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54548 states, 54497 states have (on average 1.4123896728260272) internal successors, (76971), 54503 states have internal predecessors, (76971), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:23:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54548 states to 54548 states and 77038 transitions. [2021-11-07 14:23:30,429 INFO L78 Accepts]: Start accepts. Automaton has 54548 states and 77038 transitions. Word has length 172 [2021-11-07 14:23:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:23:30,429 INFO L470 AbstractCegarLoop]: Abstraction has 54548 states and 77038 transitions. [2021-11-07 14:23:30,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 14:23:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 54548 states and 77038 transitions. [2021-11-07 14:23:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-07 14:23:30,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:23:30,455 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:23:30,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 14:23:30,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 14:23:30,675 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:23:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:23:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1139626066, now seen corresponding path program 2 times [2021-11-07 14:23:30,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:23:30,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660523413] [2021-11-07 14:23:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:23:30,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:23:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:23:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-07 14:23:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:23:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-07 14:23:31,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:23:31,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660523413] [2021-11-07 14:23:31,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660523413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:23:31,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056005921] [2021-11-07 14:23:31,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 14:23:31,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:23:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:23:31,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:23:31,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 14:24:23,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 14:24:23,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 14:24:23,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-07 14:24:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:24:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 14:24:23,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:24:23,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056005921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:24:23,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:24:23,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2021-11-07 14:24:23,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336751460] [2021-11-07 14:24:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:24:23,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 14:24:23,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:24:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 14:24:23,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-07 14:24:23,701 INFO L87 Difference]: Start difference. First operand 54548 states and 77038 transitions. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:24:26,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:24:26,156 INFO L93 Difference]: Finished difference Result 109254 states and 154355 transitions. [2021-11-07 14:24:26,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 14:24:26,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2021-11-07 14:24:26,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:24:26,268 INFO L225 Difference]: With dead ends: 109254 [2021-11-07 14:24:26,268 INFO L226 Difference]: Without dead ends: 54818 [2021-11-07 14:24:26,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 784.22ms TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-11-07 14:24:26,356 INFO L933 BasicCegarLoop]: 37795 mSDtfsCounter, 1020 mSDsluCounter, 263342 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 301137 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.90ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 335.18ms IncrementalHoareTripleChecker+Time [2021-11-07 14:24:26,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 301137 Invalid, 255 Unknown, 0 Unchecked, 125.90ms Time], IncrementalHoareTripleChecker [38 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 335.18ms Time] [2021-11-07 14:24:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54818 states. [2021-11-07 14:24:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54818 to 54548. [2021-11-07 14:24:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54548 states, 54497 states have (on average 1.4123529735581775) internal successors, (76969), 54503 states have internal predecessors, (76969), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:24:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54548 states to 54548 states and 77036 transitions. [2021-11-07 14:24:27,561 INFO L78 Accepts]: Start accepts. Automaton has 54548 states and 77036 transitions. Word has length 195 [2021-11-07 14:24:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:24:27,561 INFO L470 AbstractCegarLoop]: Abstraction has 54548 states and 77036 transitions. [2021-11-07 14:24:27,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:24:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 54548 states and 77036 transitions. [2021-11-07 14:24:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-07 14:24:27,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:24:27,592 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:24:27,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 14:24:27,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:24:27,806 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:24:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:24:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1390247283, now seen corresponding path program 1 times [2021-11-07 14:24:27,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:24:27,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79878343] [2021-11-07 14:24:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:24:27,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:24:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:24:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-07 14:24:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:24:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 14:24:28,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:24:28,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79878343] [2021-11-07 14:24:28,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79878343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:24:28,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:24:28,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 14:24:28,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203320579] [2021-11-07 14:24:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:24:28,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 14:24:28,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:24:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 14:24:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:24:28,236 INFO L87 Difference]: Start difference. First operand 54548 states and 77036 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 6 states have internal predecessors, (178), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:24:30,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:25:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:25:00,502 INFO L93 Difference]: Finished difference Result 109291 states and 154376 transitions. [2021-11-07 14:25:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 14:25:00,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 6 states have internal predecessors, (178), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208 [2021-11-07 14:25:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:25:00,731 INFO L225 Difference]: With dead ends: 109291 [2021-11-07 14:25:00,731 INFO L226 Difference]: Without dead ends: 54855 [2021-11-07 14:25:00,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 127.98ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-07 14:25:00,802 INFO L933 BasicCegarLoop]: 37724 mSDtfsCounter, 252 mSDsluCounter, 171452 mSDsCounter, 0 mSdLazyCounter, 17393 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26501.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 209176 SdHoareTripleChecker+Invalid, 17419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 237.48ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 17393 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30302.21ms IncrementalHoareTripleChecker+Time [2021-11-07 14:25:00,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 209176 Invalid, 17419 Unknown, 0 Unchecked, 237.48ms Time], IncrementalHoareTripleChecker [25 Valid, 17393 Invalid, 1 Unknown, 0 Unchecked, 30302.21ms Time] [2021-11-07 14:25:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54855 states. [2021-11-07 14:25:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54855 to 54556. [2021-11-07 14:25:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54556 states, 54505 states have (on average 1.4122924502339236) internal successors, (76977), 54511 states have internal predecessors, (76977), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:25:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54556 states to 54556 states and 77044 transitions. [2021-11-07 14:25:02,035 INFO L78 Accepts]: Start accepts. Automaton has 54556 states and 77044 transitions. Word has length 208 [2021-11-07 14:25:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:25:02,035 INFO L470 AbstractCegarLoop]: Abstraction has 54556 states and 77044 transitions. [2021-11-07 14:25:02,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 6 states have internal predecessors, (178), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 14:25:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 54556 states and 77044 transitions. [2021-11-07 14:25:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 14:25:02,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:25:02,071 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:25:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 14:25:02,072 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:25:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:25:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 281986117, now seen corresponding path program 1 times [2021-11-07 14:25:02,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:25:02,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327161255] [2021-11-07 14:25:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:25:02,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:25:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:25:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-07 14:25:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:25:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-07 14:25:03,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:25:03,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327161255] [2021-11-07 14:25:03,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327161255] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:25:03,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020593829] [2021-11-07 14:25:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:25:03,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:25:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:25:03,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:25:03,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 14:25:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:25:32,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 14:25:32,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:25:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-07 14:25:33,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:25:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-07 14:25:33,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020593829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:25:33,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:25:33,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 13 [2021-11-07 14:25:33,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395875552] [2021-11-07 14:25:33,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:25:33,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 14:25:33,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:25:33,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 14:25:33,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-07 14:25:33,626 INFO L87 Difference]: Start difference. First operand 54556 states and 77044 transitions. Second operand has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 12 states have internal predecessors, (201), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 14:25:35,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:25:47,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:26:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:26:04,986 INFO L93 Difference]: Finished difference Result 109194 states and 154224 transitions. [2021-11-07 14:26:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 14:26:04,987 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 12 states have internal predecessors, (201), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 214 [2021-11-07 14:26:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:26:05,092 INFO L225 Difference]: With dead ends: 109194 [2021-11-07 14:26:05,093 INFO L226 Difference]: Without dead ends: 54699 [2021-11-07 14:26:05,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 421 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 232.97ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-07 14:26:05,187 INFO L933 BasicCegarLoop]: 37660 mSDtfsCounter, 123 mSDsluCounter, 171090 mSDsCounter, 0 mSdLazyCounter, 17667 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25805.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 208750 SdHoareTripleChecker+Invalid, 17838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 208.68ms SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 17667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29427.89ms IncrementalHoareTripleChecker+Time [2021-11-07 14:26:05,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 208750 Invalid, 17838 Unknown, 0 Unchecked, 208.68ms Time], IncrementalHoareTripleChecker [170 Valid, 17667 Invalid, 1 Unknown, 0 Unchecked, 29427.89ms Time] [2021-11-07 14:26:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54699 states. [2021-11-07 14:26:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54699 to 54584. [2021-11-07 14:26:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54584 states, 54533 states have (on average 1.4120807584398438) internal successors, (77005), 54539 states have internal predecessors, (77005), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-07 14:26:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54584 states to 54584 states and 77072 transitions. [2021-11-07 14:26:06,483 INFO L78 Accepts]: Start accepts. Automaton has 54584 states and 77072 transitions. Word has length 214 [2021-11-07 14:26:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:26:06,483 INFO L470 AbstractCegarLoop]: Abstraction has 54584 states and 77072 transitions. [2021-11-07 14:26:06,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 12 states have internal predecessors, (201), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 14:26:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 54584 states and 77072 transitions. [2021-11-07 14:26:06,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-07 14:26:06,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:26:06,515 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:26:06,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 14:26:06,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:26:06,730 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 14:26:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:26:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash 492511941, now seen corresponding path program 2 times [2021-11-07 14:26:06,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:26:06,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129966651] [2021-11-07 14:26:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:26:06,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:26:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:26:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-07 14:26:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:26:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-07 14:26:08,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:26:08,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129966651] [2021-11-07 14:26:08,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129966651] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:26:08,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342650504] [2021-11-07 14:26:08,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 14:26:08,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:26:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:26:08,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:26:08,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15