./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 173e3943 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-dev-173e394 [2021-11-06 15:46:09,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:46:09,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:46:09,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:46:09,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:46:09,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:46:09,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:46:09,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:46:09,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:46:09,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:46:09,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:46:09,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:46:09,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:46:09,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:46:09,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:46:09,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:46:09,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:46:09,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:46:09,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:46:09,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:46:09,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:46:09,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:46:09,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:46:09,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:46:09,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:46:09,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:46:09,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:46:09,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:46:09,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:46:09,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:46:09,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:46:09,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:46:09,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:46:09,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:46:09,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:46:09,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:46:09,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:46:09,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:46:09,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:46:09,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:46:09,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:46:09,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:46:09,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:46:09,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:46:09,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:46:09,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:46:09,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:46:09,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:46:09,364 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:46:09,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:46:09,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:46:09,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:46:09,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:46:09,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:46:09,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:46:09,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:46:09,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:46:09,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:46:09,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:46:09,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:46:09,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:46:09,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:46:09,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:46:09,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:46:09,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:46:09,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:46:09,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:46:09,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:46:09,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:46:09,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:46:09,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:46:09,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 [2021-11-06 15:46:09,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:46:09,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:46:09,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:46:09,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:46:09,597 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:46:09,598 INFO L432 ainManager$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 [2021-11-06 15:46:09,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf187ca7/4d8733bdd0664962a4fb631bcdd32150/FLAG980d53e2d [2021-11-06 15:46:10,262 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:46:10,264 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 [2021-11-06 15:46:10,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf187ca7/4d8733bdd0664962a4fb631bcdd32150/FLAG980d53e2d [2021-11-06 15:46:10,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf187ca7/4d8733bdd0664962a4fb631bcdd32150 [2021-11-06 15:46:10,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:46:10,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:46:10,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:46:10,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:46:10,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:46:10,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:46:10" (1/1) ... [2021-11-06 15:46:10,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73998645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:10, skipping insertion in model container [2021-11-06 15:46:10,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:46:10" (1/1) ... [2021-11-06 15:46:10,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:46:10,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:46:11,705 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] [2021-11-06 15:46:11,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:46:11,742 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:46:11,976 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] [2021-11-06 15:46:11,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:46:12,059 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:46:12,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12 WrapperNode [2021-11-06 15:46:12,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:46:12,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:46:12,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:46:12,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:46:12,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:12,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:14,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:46:14,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:46:14,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:46:14,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:46:14,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:14,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:15,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:15,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:17,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:17,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:17,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:18,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:46:18,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:46:18,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:46:18,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:46:18,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (1/1) ... [2021-11-06 15:46:18,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:46:18,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:46:18,421 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) [2021-11-06 15:46:18,422 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 [2021-11-06 15:46:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 15:46:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ctr [2021-11-06 15:46:18,445 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ctr [2021-11-06 15:46:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure parse_path_selector [2021-11-06 15:46:18,445 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_path_selector [2021-11-06 15:46:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_dtr [2021-11-06 15:46:18,446 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_dtr [2021-11-06 15:46:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure free_priority_group [2021-11-06 15:46:18,446 INFO L138 BoogieDeclarations]: Found implementation of procedure free_priority_group [2021-11-06 15:46:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:46:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:46:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:46:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:46:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:46:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:46:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:46:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-06 15:46:18,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-06 15:46:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:46:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:46:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure parse_priority_group [2021-11-06 15:46:18,447 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_priority_group [2021-11-06 15:46:18,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:46:18,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:46:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure free_multipath [2021-11-06 15:46:18,448 INFO L138 BoogieDeclarations]: Found implementation of procedure free_multipath [2021-11-06 15:46:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-06 15:46:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:46:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:46:18,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:46:59,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:46:59,402 INFO L299 CfgBuilder]: Removed 26179 assume(true) statements. [2021-11-06 15:46:59,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:46:59 BoogieIcfgContainer [2021-11-06 15:46:59,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:46:59,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:46:59,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:46:59,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:46:59,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:46:10" (1/3) ... [2021-11-06 15:46:59,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aecf821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:46:59, skipping insertion in model container [2021-11-06 15:46:59,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:46:12" (2/3) ... [2021-11-06 15:46:59,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aecf821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:46:59, skipping insertion in model container [2021-11-06 15:46:59,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:46:59" (3/3) ... [2021-11-06 15:46:59,426 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-06 15:46:59,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:46:59,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 15:46:59,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:46:59,522 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 [2021-11-06 15:46:59,522 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 15:46:59,768 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) [2021-11-06 15:46:59,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 15:46:59,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:46:59,784 INFO L513 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] [2021-11-06 15:46:59,785 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)] === [2021-11-06 15:46:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:46:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1949403803, now seen corresponding path program 1 times [2021-11-06 15:46:59,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:46:59,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087192219] [2021-11-06 15:46:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:46:59,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:00,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:00,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087192219] [2021-11-06 15:47:00,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087192219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:00,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:00,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:47:00,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874821265] [2021-11-06 15:47:00,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:47:00,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:00,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:47:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:47:00,294 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) [2021-11-06 15:47:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:47:01,226 INFO L93 Difference]: Finished difference Result 53402 states and 75640 transitions. [2021-11-06 15:47:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:47:01,228 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 [2021-11-06 15:47:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:47:01,348 INFO L225 Difference]: With dead ends: 53402 [2021-11-06 15:47:01,348 INFO L226 Difference]: Without dead ends: 26689 [2021-11-06 15:47:01,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:47:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26689 states. [2021-11-06 15:47:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26689 to 26689. [2021-11-06 15:47:01,947 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) [2021-11-06 15:47:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26689 states to 26689 states and 37698 transitions. [2021-11-06 15:47:02,063 INFO L78 Accepts]: Start accepts. Automaton has 26689 states and 37698 transitions. Word has length 96 [2021-11-06 15:47:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:47:02,064 INFO L470 AbstractCegarLoop]: Abstraction has 26689 states and 37698 transitions. [2021-11-06 15:47:02,065 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) [2021-11-06 15:47:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 26689 states and 37698 transitions. [2021-11-06 15:47:02,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 15:47:02,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:02,071 INFO L513 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] [2021-11-06 15:47:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:47:02,073 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)] === [2021-11-06 15:47:02,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:02,075 INFO L85 PathProgramCache]: Analyzing trace with hash 329765497, now seen corresponding path program 1 times [2021-11-06 15:47:02,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:02,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926618748] [2021-11-06 15:47:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:02,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:02,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:02,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926618748] [2021-11-06 15:47:02,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926618748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:02,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:02,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:47:02,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104064127] [2021-11-06 15:47:02,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:47:02,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:47:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:47:02,505 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) [2021-11-06 15:47:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:47:03,609 INFO L93 Difference]: Finished difference Result 79902 states and 112932 transitions. [2021-11-06 15:47:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:47:03,610 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 [2021-11-06 15:47:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:47:03,745 INFO L225 Difference]: With dead ends: 79902 [2021-11-06 15:47:03,745 INFO L226 Difference]: Without dead ends: 49118 [2021-11-06 15:47:03,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:47:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49118 states. [2021-11-06 15:47:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49118 to 49112. [2021-11-06 15:47:04,679 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) [2021-11-06 15:47:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49112 states to 49112 states and 69421 transitions. [2021-11-06 15:47:04,789 INFO L78 Accepts]: Start accepts. Automaton has 49112 states and 69421 transitions. Word has length 96 [2021-11-06 15:47:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:47:04,791 INFO L470 AbstractCegarLoop]: Abstraction has 49112 states and 69421 transitions. [2021-11-06 15:47:04,791 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) [2021-11-06 15:47:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 49112 states and 69421 transitions. [2021-11-06 15:47:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 15:47:04,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:04,828 INFO L513 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] [2021-11-06 15:47:04,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:47:04,829 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)] === [2021-11-06 15:47:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1857091770, now seen corresponding path program 1 times [2021-11-06 15:47:04,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:04,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093324165] [2021-11-06 15:47:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:04,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-06 15:47:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:05,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:05,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093324165] [2021-11-06 15:47:05,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093324165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:05,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:05,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:47:05,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074159684] [2021-11-06 15:47:05,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:47:05,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:47:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:47:05,070 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) [2021-11-06 15:47:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:47:36,306 INFO L93 Difference]: Finished difference Result 107766 states and 152294 transitions. [2021-11-06 15:47:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:47:36,307 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 [2021-11-06 15:47:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:47:36,471 INFO L225 Difference]: With dead ends: 107766 [2021-11-06 15:47:36,471 INFO L226 Difference]: Without dead ends: 58734 [2021-11-06 15:47:36,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:47:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58734 states. [2021-11-06 15:47:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58734 to 54446. [2021-11-06 15:47:37,581 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) [2021-11-06 15:47:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54446 states to 54446 states and 76941 transitions. [2021-11-06 15:47:37,996 INFO L78 Accepts]: Start accepts. Automaton has 54446 states and 76941 transitions. Word has length 127 [2021-11-06 15:47:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:47:37,998 INFO L470 AbstractCegarLoop]: Abstraction has 54446 states and 76941 transitions. [2021-11-06 15:47:37,998 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) [2021-11-06 15:47:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 54446 states and 76941 transitions. [2021-11-06 15:47:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 15:47:38,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:47:38,032 INFO L513 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] [2021-11-06 15:47:38,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:47:38,033 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)] === [2021-11-06 15:47:38,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:47:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash 973103075, now seen corresponding path program 1 times [2021-11-06 15:47:38,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:47:38,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015814818] [2021-11-06 15:47:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:47:38,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:47:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-06 15:47:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:47:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:47:38,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:47:38,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015814818] [2021-11-06 15:47:38,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015814818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:47:38,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:47:38,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:47:38,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92096297] [2021-11-06 15:47:38,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:47:38,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:47:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:47:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:47:38,280 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) [2021-11-06 15:48:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:48:12,887 INFO L93 Difference]: Finished difference Result 108938 states and 153952 transitions. [2021-11-06 15:48:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:48:12,888 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 [2021-11-06 15:48:12,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:48:13,032 INFO L225 Difference]: With dead ends: 108938 [2021-11-06 15:48:13,032 INFO L226 Difference]: Without dead ends: 54566 [2021-11-06 15:48:13,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:48:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54566 states. [2021-11-06 15:48:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54566 to 54449. [2021-11-06 15:48:13,967 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) [2021-11-06 15:48:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54449 states to 54449 states and 76942 transitions. [2021-11-06 15:48:14,086 INFO L78 Accepts]: Start accepts. Automaton has 54449 states and 76942 transitions. Word has length 145 [2021-11-06 15:48:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:48:14,088 INFO L470 AbstractCegarLoop]: Abstraction has 54449 states and 76942 transitions. [2021-11-06 15:48:14,088 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) [2021-11-06 15:48:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 54449 states and 76942 transitions. [2021-11-06 15:48:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 15:48:14,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:48:14,124 INFO L513 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] [2021-11-06 15:48:14,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:48:14,125 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)] === [2021-11-06 15:48:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:48:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1398270742, now seen corresponding path program 1 times [2021-11-06 15:48:14,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:48:14,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541763631] [2021-11-06 15:48:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:48:14,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:48:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-06 15:48:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:48:14,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:48:14,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541763631] [2021-11-06 15:48:14,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541763631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:48:14,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:48:14,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:48:14,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337858862] [2021-11-06 15:48:14,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:48:14,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:48:14,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:48:14,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:48:14,676 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) [2021-11-06 15:48:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:48:49,214 INFO L93 Difference]: Finished difference Result 108952 states and 153962 transitions. [2021-11-06 15:48:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:48:49,218 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 [2021-11-06 15:48:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:48:49,333 INFO L225 Difference]: With dead ends: 108952 [2021-11-06 15:48:49,334 INFO L226 Difference]: Without dead ends: 54573 [2021-11-06 15:48:49,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:48:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54573 states. [2021-11-06 15:48:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54573 to 54451. [2021-11-06 15:48:50,382 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) [2021-11-06 15:48:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54451 states to 54451 states and 76942 transitions. [2021-11-06 15:48:50,665 INFO L78 Accepts]: Start accepts. Automaton has 54451 states and 76942 transitions. Word has length 149 [2021-11-06 15:48:50,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:48:50,665 INFO L470 AbstractCegarLoop]: Abstraction has 54451 states and 76942 transitions. [2021-11-06 15:48:50,665 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) [2021-11-06 15:48:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 54451 states and 76942 transitions. [2021-11-06 15:48:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 15:48:50,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:48:50,703 INFO L513 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] [2021-11-06 15:48:50,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:48:50,704 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)] === [2021-11-06 15:48:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:48:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -611164369, now seen corresponding path program 1 times [2021-11-06 15:48:50,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:48:50,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683041282] [2021-11-06 15:48:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:48:50,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:48:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-06 15:48:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:48:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:48:50,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:48:50,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683041282] [2021-11-06 15:48:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683041282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:48:50,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:48:50,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:48:50,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826962786] [2021-11-06 15:48:50,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:48:50,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:48:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:48:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:48:50,989 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) [2021-11-06 15:49:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:49:31,682 INFO L93 Difference]: Finished difference Result 134274 states and 190055 transitions. [2021-11-06 15:49:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 15:49:31,683 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 [2021-11-06 15:49:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:49:31,856 INFO L225 Difference]: With dead ends: 134274 [2021-11-06 15:49:31,857 INFO L226 Difference]: Without dead ends: 79895 [2021-11-06 15:49:31,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:49:32,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2021-11-06 15:49:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 54454. [2021-11-06 15:49:32,968 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) [2021-11-06 15:49:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54454 states to 54454 states and 76943 transitions. [2021-11-06 15:49:33,089 INFO L78 Accepts]: Start accepts. Automaton has 54454 states and 76943 transitions. Word has length 149 [2021-11-06 15:49:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:49:33,089 INFO L470 AbstractCegarLoop]: Abstraction has 54454 states and 76943 transitions. [2021-11-06 15:49:33,089 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) [2021-11-06 15:49:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 54454 states and 76943 transitions. [2021-11-06 15:49:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 15:49:33,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:49:33,115 INFO L513 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] [2021-11-06 15:49:33,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:49:33,115 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)] === [2021-11-06 15:49:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:49:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1983069607, now seen corresponding path program 1 times [2021-11-06 15:49:33,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:49:33,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062653926] [2021-11-06 15:49:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:49:33,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:49:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:49:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-06 15:49:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:49:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:49:33,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:49:33,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062653926] [2021-11-06 15:49:33,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062653926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:49:33,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:49:33,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 15:49:33,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861279345] [2021-11-06 15:49:33,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 15:49:33,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:49:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 15:49:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:49:33,450 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) [2021-11-06 15:50:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:50:02,929 INFO L93 Difference]: Finished difference Result 109231 states and 154369 transitions. [2021-11-06 15:50:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 15:50:02,929 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 [2021-11-06 15:50:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:50:03,040 INFO L225 Difference]: With dead ends: 109231 [2021-11-06 15:50:03,041 INFO L226 Difference]: Without dead ends: 54857 [2021-11-06 15:50:03,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-06 15:50:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54857 states. [2021-11-06 15:50:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54857 to 54472. [2021-11-06 15:50:04,099 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) [2021-11-06 15:50:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54472 states to 54472 states and 76962 transitions. [2021-11-06 15:50:04,226 INFO L78 Accepts]: Start accepts. Automaton has 54472 states and 76962 transitions. Word has length 155 [2021-11-06 15:50:04,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:50:04,226 INFO L470 AbstractCegarLoop]: Abstraction has 54472 states and 76962 transitions. [2021-11-06 15:50:04,227 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) [2021-11-06 15:50:04,227 INFO L276 IsEmpty]: Start isEmpty. Operand 54472 states and 76962 transitions. [2021-11-06 15:50:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-06 15:50:04,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:50:04,254 INFO L513 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] [2021-11-06 15:50:04,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:50:04,254 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)] === [2021-11-06 15:50:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:50:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash -179505297, now seen corresponding path program 1 times [2021-11-06 15:50:04,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:50:04,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944855595] [2021-11-06 15:50:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:50:04,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:50:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:50:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-06 15:50:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:50:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:50:04,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:50:04,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944855595] [2021-11-06 15:50:04,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944855595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:50:04,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:50:04,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:50:04,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011607075] [2021-11-06 15:50:04,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:50:04,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:50:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:50:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:50:04,505 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) [2021-11-06 15:50:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:50:34,955 INFO L93 Difference]: Finished difference Result 109033 states and 154085 transitions. [2021-11-06 15:50:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:50:34,955 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 [2021-11-06 15:50:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:50:35,065 INFO L225 Difference]: With dead ends: 109033 [2021-11-06 15:50:35,066 INFO L226 Difference]: Without dead ends: 54641 [2021-11-06 15:50:35,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:50:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54641 states. [2021-11-06 15:50:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54641 to 54476. [2021-11-06 15:50:36,023 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) [2021-11-06 15:50:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54476 states to 54476 states and 76966 transitions. [2021-11-06 15:50:36,140 INFO L78 Accepts]: Start accepts. Automaton has 54476 states and 76966 transitions. Word has length 161 [2021-11-06 15:50:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:50:36,141 INFO L470 AbstractCegarLoop]: Abstraction has 54476 states and 76966 transitions. [2021-11-06 15:50:36,141 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) [2021-11-06 15:50:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 54476 states and 76966 transitions. [2021-11-06 15:50:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 15:50:36,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:50:36,167 INFO L513 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] [2021-11-06 15:50:36,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:50:36,168 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)] === [2021-11-06 15:50:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:50:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1014349614, now seen corresponding path program 1 times [2021-11-06 15:50:36,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:50:36,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084369231] [2021-11-06 15:50:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:50:36,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:50:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:50:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-06 15:50:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:50:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:50:37,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:50:37,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084369231] [2021-11-06 15:50:37,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084369231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:50:37,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:50:37,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:50:37,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251037985] [2021-11-06 15:50:37,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:50:37,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:50:37,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:50:37,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:50:37,062 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) [2021-11-06 15:51:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:51:05,040 INFO L93 Difference]: Finished difference Result 109022 states and 154036 transitions. [2021-11-06 15:51:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:51:05,041 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 [2021-11-06 15:51:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:51:05,131 INFO L225 Difference]: With dead ends: 109022 [2021-11-06 15:51:05,131 INFO L226 Difference]: Without dead ends: 54598 [2021-11-06 15:51:05,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:51:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54598 states. [2021-11-06 15:51:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54598 to 54483. [2021-11-06 15:51:06,139 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) [2021-11-06 15:51:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54483 states to 54483 states and 76973 transitions. [2021-11-06 15:51:06,262 INFO L78 Accepts]: Start accepts. Automaton has 54483 states and 76973 transitions. Word has length 163 [2021-11-06 15:51:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:51:06,262 INFO L470 AbstractCegarLoop]: Abstraction has 54483 states and 76973 transitions. [2021-11-06 15:51:06,263 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) [2021-11-06 15:51:06,263 INFO L276 IsEmpty]: Start isEmpty. Operand 54483 states and 76973 transitions. [2021-11-06 15:51:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-06 15:51:06,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:51:06,312 INFO L513 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] [2021-11-06 15:51:06,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:51:06,313 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)] === [2021-11-06 15:51:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:51:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2043892463, now seen corresponding path program 1 times [2021-11-06 15:51:06,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:51:06,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135355759] [2021-11-06 15:51:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:51:06,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:51:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:51:07,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-06 15:51:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:51:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:51:07,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:51:07,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135355759] [2021-11-06 15:51:07,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135355759] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:51:07,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095547458] [2021-11-06 15:51:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:51:07,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:51:07,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:51:07,132 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) [2021-11-06 15:51:07,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:52:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:52:01,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-06 15:52:01,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:52:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:52:01,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095547458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:52:01,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:52:01,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-06 15:52:01,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534022523] [2021-11-06 15:52:01,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:52:01,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:52:01,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:52:01,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:52:01,605 INFO L87 Difference]: Start difference. First operand 54483 states and 76973 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 5 states have internal predecessors, (173), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 15:52:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:52:31,946 INFO L93 Difference]: Finished difference Result 109037 states and 154053 transitions. [2021-11-06 15:52:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:52:31,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 5 states have internal predecessors, (173), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2021-11-06 15:52:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:52:32,057 INFO L225 Difference]: With dead ends: 109037 [2021-11-06 15:52:32,057 INFO L226 Difference]: Without dead ends: 54607 [2021-11-06 15:52:32,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:52:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54607 states. [2021-11-06 15:52:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54607 to 54492. [2021-11-06 15:52:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54492 states, 54441 states have (on average 1.412813871898018) internal successors, (76915), 54447 states have internal predecessors, (76915), 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) [2021-11-06 15:52:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54492 states to 54492 states and 76982 transitions. [2021-11-06 15:52:33,144 INFO L78 Accepts]: Start accepts. Automaton has 54492 states and 76982 transitions. Word has length 170 [2021-11-06 15:52:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:52:33,144 INFO L470 AbstractCegarLoop]: Abstraction has 54492 states and 76982 transitions. [2021-11-06 15:52:33,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 5 states have internal predecessors, (173), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 15:52:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 54492 states and 76982 transitions. [2021-11-06 15:52:33,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-06 15:52:33,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:52:33,172 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:52:33,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 15:52:33,384 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 [2021-11-06 15:52:33,385 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)] === [2021-11-06 15:52:33,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:52:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash -362578, now seen corresponding path program 1 times [2021-11-06 15:52:33,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:52:33,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134040673] [2021-11-06 15:52:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:52:33,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:52:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:52:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-06 15:52:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:52:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-06 15:52:34,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:52:34,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134040673] [2021-11-06 15:52:34,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134040673] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:52:34,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116218088] [2021-11-06 15:52:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:52:34,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:52:34,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:52:34,084 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) [2021-11-06 15:52:34,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:53:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:53:12,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 3311 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 15:53:12,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:53:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-06 15:53:12,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116218088] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:53:12,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:53:12,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-06 15:53:12,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475277860] [2021-11-06 15:53:12,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:53:12,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:53:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:53:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:53:12,935 INFO L87 Difference]: Start difference. First operand 54492 states and 76982 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 15:53:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:53:42,651 INFO L93 Difference]: Finished difference Result 109052 states and 154066 transitions. [2021-11-06 15:53:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:53:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 179 [2021-11-06 15:53:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:53:42,756 INFO L225 Difference]: With dead ends: 109052 [2021-11-06 15:53:42,756 INFO L226 Difference]: Without dead ends: 54614 [2021-11-06 15:53:42,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:53:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54614 states. [2021-11-06 15:53:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54614 to 54499. [2021-11-06 15:53:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54499 states, 54448 states have (on average 1.41276079929474) internal successors, (76922), 54454 states have internal predecessors, (76922), 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) [2021-11-06 15:53:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54499 states to 54499 states and 76989 transitions. [2021-11-06 15:53:43,982 INFO L78 Accepts]: Start accepts. Automaton has 54499 states and 76989 transitions. Word has length 179 [2021-11-06 15:53:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:53:43,982 INFO L470 AbstractCegarLoop]: Abstraction has 54499 states and 76989 transitions. [2021-11-06 15:53:43,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 15:53:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 54499 states and 76989 transitions. [2021-11-06 15:53:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-06 15:53:44,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:53:44,008 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 15:53:44,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 15:53:44,223 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 [2021-11-06 15:53:44,224 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)] === [2021-11-06 15:53:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:53:44,225 INFO L85 PathProgramCache]: Analyzing trace with hash 340854971, now seen corresponding path program 2 times [2021-11-06 15:53:44,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:53:44,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136410556] [2021-11-06 15:53:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:53:44,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:53:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:53:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-06 15:53:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:53:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-06 15:53:45,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:53:45,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136410556] [2021-11-06 15:53:45,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136410556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:53:45,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758588852] [2021-11-06 15:53:45,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:53:45,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:53:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:53:45,020 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) [2021-11-06 15:53:45,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 15:54:37,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 15:54:37,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:54:37,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-06 15:54:37,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:54:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-06 15:54:37,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758588852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:54:37,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:54:37,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2021-11-06 15:54:37,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587454556] [2021-11-06 15:54:37,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 15:54:37,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:54:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 15:54:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-06 15:54:37,709 INFO L87 Difference]: Start difference. First operand 54499 states and 76989 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) [2021-11-06 15:54:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:54:39,696 INFO L93 Difference]: Finished difference Result 109165 states and 154266 transitions. [2021-11-06 15:54:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 15:54:39,697 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 186 [2021-11-06 15:54:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:54:39,798 INFO L225 Difference]: With dead ends: 109165 [2021-11-06 15:54:39,798 INFO L226 Difference]: Without dead ends: 54769 [2021-11-06 15:54:39,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2021-11-06 15:54:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54769 states. [2021-11-06 15:54:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54769 to 54499. [2021-11-06 15:54:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54499 states, 54448 states have (on average 1.412724066999706) internal successors, (76920), 54454 states have internal predecessors, (76920), 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) [2021-11-06 15:54:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54499 states to 54499 states and 76987 transitions. [2021-11-06 15:54:40,959 INFO L78 Accepts]: Start accepts. Automaton has 54499 states and 76987 transitions. Word has length 186 [2021-11-06 15:54:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:54:40,959 INFO L470 AbstractCegarLoop]: Abstraction has 54499 states and 76987 transitions. [2021-11-06 15:54:40,959 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) [2021-11-06 15:54:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 54499 states and 76987 transitions. [2021-11-06 15:54:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-06 15:54:40,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:54:40,988 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 15:54:41,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 15:54:41,202 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 [2021-11-06 15:54:41,203 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)] === [2021-11-06 15:54:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:54:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1124071776, now seen corresponding path program 1 times [2021-11-06 15:54:41,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:54:41,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307659726] [2021-11-06 15:54:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:54:41,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:54:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:54:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-06 15:54:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:54:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-06 15:54:41,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:54:41,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307659726] [2021-11-06 15:54:41,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307659726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:54:41,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:54:41,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:54:41,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919578963] [2021-11-06 15:54:41,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:54:41,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:54:41,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:54:41,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:54:41,542 INFO L87 Difference]: Start difference. First operand 54499 states and 76987 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) [2021-11-06 15:55:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:55:11,786 INFO L93 Difference]: Finished difference Result 109202 states and 154287 transitions. [2021-11-06 15:55:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:55:11,787 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 199 [2021-11-06 15:55:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:55:11,893 INFO L225 Difference]: With dead ends: 109202 [2021-11-06 15:55:11,893 INFO L226 Difference]: Without dead ends: 54806 [2021-11-06 15:55:11,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:55:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54806 states. [2021-11-06 15:55:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54806 to 54507. [2021-11-06 15:55:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54507 states, 54456 states have (on average 1.412663434699574) internal successors, (76928), 54462 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) [2021-11-06 15:55:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54507 states to 54507 states and 76995 transitions. [2021-11-06 15:55:12,989 INFO L78 Accepts]: Start accepts. Automaton has 54507 states and 76995 transitions. Word has length 199 [2021-11-06 15:55:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:55:12,990 INFO L470 AbstractCegarLoop]: Abstraction has 54507 states and 76995 transitions. [2021-11-06 15:55:12,990 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) [2021-11-06 15:55:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 54507 states and 76995 transitions. [2021-11-06 15:55:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-06 15:55:13,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:55:13,025 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-11-06 15:55:13,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 15:55:13,025 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)] === [2021-11-06 15:55:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:55:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1433424360, now seen corresponding path program 1 times [2021-11-06 15:55:13,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:55:13,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056424279] [2021-11-06 15:55:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:55:13,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:55:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:55:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-06 15:55:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:55:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-06 15:55:14,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:55:14,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056424279] [2021-11-06 15:55:14,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056424279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:55:14,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476003809] [2021-11-06 15:55:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:55:14,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:55:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:55:14,167 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) [2021-11-06 15:55:14,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 15:55:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:55:15,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 3635 conjuncts, 161 conjunts are in the unsatisfiable core [2021-11-06 15:55:15,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:55:16,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 15:55:16,486 INFO L354 Elim1Store]: treesize reduction 728, result has 5.3 percent of original size [2021-11-06 15:55:16,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 70 [2021-11-06 15:55:16,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:16,614 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-06 15:55:16,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 14 [2021-11-06 15:55:16,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:16,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-06 15:55:16,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:16,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2021-11-06 15:55:17,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 38 [2021-11-06 15:55:17,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2021-11-06 15:55:17,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,170 INFO L354 Elim1Store]: treesize reduction 94, result has 21.7 percent of original size [2021-11-06 15:55:17,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 91 [2021-11-06 15:55:17,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,202 INFO L354 Elim1Store]: treesize reduction 94, result has 21.7 percent of original size [2021-11-06 15:55:17,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 57 [2021-11-06 15:55:17,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,320 INFO L354 Elim1Store]: treesize reduction 128, result has 16.9 percent of original size [2021-11-06 15:55:17,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 84 [2021-11-06 15:55:17,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,356 INFO L354 Elim1Store]: treesize reduction 128, result has 16.9 percent of original size [2021-11-06 15:55:17,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 84 [2021-11-06 15:55:17,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,510 INFO L354 Elim1Store]: treesize reduction 88, result has 24.8 percent of original size [2021-11-06 15:55:17,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 104 treesize of output 124 [2021-11-06 15:55:17,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:17,536 INFO L354 Elim1Store]: treesize reduction 88, result has 24.8 percent of original size [2021-11-06 15:55:17,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 132 [2021-11-06 15:55:19,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,646 INFO L354 Elim1Store]: treesize reduction 110, result has 20.9 percent of original size [2021-11-06 15:55:19,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 146 treesize of output 169 [2021-11-06 15:55:19,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:19,688 INFO L354 Elim1Store]: treesize reduction 110, result has 20.9 percent of original size [2021-11-06 15:55:19,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 151 treesize of output 174 [2021-11-06 15:55:20,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,285 INFO L354 Elim1Store]: treesize reduction 338, result has 13.6 percent of original size [2021-11-06 15:55:20,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 210 treesize of output 210 [2021-11-06 15:55:20,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:20,377 INFO L354 Elim1Store]: treesize reduction 422, result has 11.2 percent of original size [2021-11-06 15:55:20,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 210 treesize of output 204 [2021-11-06 15:55:35,047 WARN L207 SmtUtils]: Spent 13.51 s on a formula simplification. DAG size of input: 296 DAG size of output: 65 [2021-11-06 15:55:35,048 INFO L354 Elim1Store]: treesize reduction 1613, result has 7.8 percent of original size [2021-11-06 15:55:35,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 31 case distinctions, treesize of input 393 treesize of output 455 [2021-11-06 15:55:40,854 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 294 DAG size of output: 63 [2021-11-06 15:55:40,854 INFO L354 Elim1Store]: treesize reduction 1567, result has 7.8 percent of original size [2021-11-06 15:55:40,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 31 case distinctions, treesize of input 404 treesize of output 452 [2021-11-06 15:55:41,718 INFO L354 Elim1Store]: treesize reduction 440, result has 14.1 percent of original size [2021-11-06 15:55:41,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 447 treesize of output 426 [2021-11-06 15:55:42,165 INFO L354 Elim1Store]: treesize reduction 422, result has 14.2 percent of original size [2021-11-06 15:55:42,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 449 treesize of output 428 [2021-11-06 15:55:42,765 INFO L354 Elim1Store]: treesize reduction 717, result has 11.4 percent of original size [2021-11-06 15:55:42,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 453 treesize of output 445 [2021-11-06 15:55:43,102 INFO L354 Elim1Store]: treesize reduction 422, result has 14.2 percent of original size [2021-11-06 15:55:43,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 471 treesize of output 438 [2021-11-06 15:55:43,436 INFO L354 Elim1Store]: treesize reduction 380, result has 15.6 percent of original size [2021-11-06 15:55:43,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 475 treesize of output 453 [2021-11-06 15:55:43,702 INFO L354 Elim1Store]: treesize reduction 743, result has 11.2 percent of original size [2021-11-06 15:55:43,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 485 treesize of output 457 [2021-11-06 15:55:43,824 INFO L354 Elim1Store]: treesize reduction 440, result has 14.1 percent of original size [2021-11-06 15:55:43,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 499 treesize of output 446 [2021-11-06 15:55:43,939 INFO L354 Elim1Store]: treesize reduction 398, result has 15.3 percent of original size [2021-11-06 15:55:43,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 501 treesize of output 459 [2021-11-06 15:55:46,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 15:55:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:46,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:46,645 INFO L354 Elim1Store]: treesize reduction 218, result has 8.4 percent of original size [2021-11-06 15:55:46,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 177 treesize of output 145 [2021-11-06 15:55:46,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 15:55:46,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:55:46,681 INFO L354 Elim1Store]: treesize reduction 176, result has 10.2 percent of original size [2021-11-06 15:55:46,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 116 [2021-11-06 15:55:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-06 15:55:46,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476003809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:55:46,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:55:46,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [7] total 31 [2021-11-06 15:55:46,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054740590] [2021-11-06 15:55:46,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-06 15:55:46,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:55:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-06 15:55:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2021-11-06 15:55:46,835 INFO L87 Difference]: Start difference. First operand 54507 states and 76995 transitions. Second operand has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 24 states have internal predecessors, (186), 3 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) [2021-11-06 15:59:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:59:57,783 INFO L93 Difference]: Finished difference Result 181484 states and 257175 transitions. [2021-11-06 15:59:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-06 15:59:57,784 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.153846153846154) internal successors, (186), 24 states have internal predecessors, (186), 3 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 205 [2021-11-06 15:59:57,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:59:58,172 INFO L225 Difference]: With dead ends: 181484 [2021-11-06 15:59:58,172 INFO L226 Difference]: Without dead ends: 127080 [2021-11-06 15:59:58,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=422, Invalid=2881, Unknown=3, NotChecked=0, Total=3306 [2021-11-06 15:59:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127080 states. Killed by 15