./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 fcb8e130 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-fcb8e13 [2021-11-23 00:14:41,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:14:41,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:14:41,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:14:41,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:14:41,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:14:41,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:14:41,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:14:41,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:14:41,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:14:41,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:14:41,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:14:41,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:14:41,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:14:41,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:14:41,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:14:41,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:14:41,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:14:41,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:14:41,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:14:41,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:14:41,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:14:41,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:14:41,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:14:41,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:14:41,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:14:41,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:14:41,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:14:41,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:14:41,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:14:41,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:14:41,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:14:41,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:14:41,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:14:41,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:14:41,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:14:41,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:14:41,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:14:41,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:14:41,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:14:41,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:14:41,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 00:14:41,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:14:41,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:14:41,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 00:14:41,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 00:14:41,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:14:41,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:14:41,414 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 00:14:41,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:14:41,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:14:41,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:14:41,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:14:41,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:14:41,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:14:41,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:14:41,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:14:41,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:14:41,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:14:41,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 00:14:41,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 00:14:41,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:14:41,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:14:41,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:14:41,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:14:41,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 00:14:41,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:14:41,418 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 00:14:41,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 00:14:41,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:14:41,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 00:14:41,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 [2021-11-23 00:14:41,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:14:41,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:14:41,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:14:41,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:14:41,680 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:14:41,681 INFO L432 ainManager$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 [2021-11-23 00:14:41,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb3c268b/39085e81eef7420a88bae7e5dc0b80de/FLAG1dd64b022 [2021-11-23 00:14:42,314 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:14:42,315 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 [2021-11-23 00:14:42,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb3c268b/39085e81eef7420a88bae7e5dc0b80de/FLAG1dd64b022 [2021-11-23 00:14:42,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb3c268b/39085e81eef7420a88bae7e5dc0b80de [2021-11-23 00:14:42,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:14:42,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:14:42,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:14:42,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:14:42,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:14:42,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:14:42" (1/1) ... [2021-11-23 00:14:42,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5744a89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:42, skipping insertion in model container [2021-11-23 00:14:42,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:14:42" (1/1) ... [2021-11-23 00:14:42,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:14:42,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:14:43,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-23 00:14:43,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:14:43,817 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:14:44,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-23 00:14:44,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:14:44,162 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:14:44,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44 WrapperNode [2021-11-23 00:14:44,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:14:44,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:14:44,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:14:44,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:14:44,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:44,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:46,589 INFO L137 Inliner]: procedures = 258, calls = 1568, calls flagged for inlining = 505, calls inlined = 13113, statements flattened = 168397 [2021-11-23 00:14:46,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:14:46,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:14:46,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:14:46,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:14:46,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:46,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:47,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:47,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:49,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:49,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:50,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:50,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:14:50,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:14:50,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:14:50,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:14:50,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (1/1) ... [2021-11-23 00:14:50,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:14:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:14:50,767 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) [2021-11-23 00:14:50,779 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 [2021-11-23 00:14:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-23 00:14:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ctr [2021-11-23 00:14:50,799 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ctr [2021-11-23 00:14:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure parse_path_selector [2021-11-23 00:14:50,799 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_path_selector [2021-11-23 00:14:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_dtr [2021-11-23 00:14:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_dtr [2021-11-23 00:14:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure free_priority_group [2021-11-23 00:14:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure free_priority_group [2021-11-23 00:14:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 00:14:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 00:14:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 00:14:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 00:14:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 00:14:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 00:14:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 00:14:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:14:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 00:14:50,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 00:14:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 00:14:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 00:14:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure parse_priority_group [2021-11-23 00:14:50,802 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_priority_group [2021-11-23 00:14:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 00:14:50,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 00:14:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure free_multipath [2021-11-23 00:14:50,802 INFO L138 BoogieDeclarations]: Found implementation of procedure free_multipath [2021-11-23 00:14:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-23 00:14:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:14:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:14:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:14:51,685 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:14:51,686 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:15:31,183 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:15:31,261 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:15:31,261 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 00:15:31,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:15:31 BoogieIcfgContainer [2021-11-23 00:15:31,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:15:31,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 00:15:31,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 00:15:31,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 00:15:31,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:14:42" (1/3) ... [2021-11-23 00:15:31,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a517e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:15:31, skipping insertion in model container [2021-11-23 00:15:31,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:14:44" (2/3) ... [2021-11-23 00:15:31,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a517e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:15:31, skipping insertion in model container [2021-11-23 00:15:31,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:15:31" (3/3) ... [2021-11-23 00:15:31,300 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-23 00:15:31,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 00:15:31,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 00:15:31,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 00:15:31,400 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 [2021-11-23 00:15:31,401 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 00:15:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 28612 states, 28584 states have (on average 1.3886789812482507) internal successors, (39694), 28589 states have internal predecessors, (39694), 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) [2021-11-23 00:15:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 00:15:31,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:15:31,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:15:31,748 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)] === [2021-11-23 00:15:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:15:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash 113870988, now seen corresponding path program 1 times [2021-11-23 00:15:31,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:15:31,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108475873] [2021-11-23 00:15:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:15:31,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:15:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:15:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:15:32,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:15:32,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108475873] [2021-11-23 00:15:32,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108475873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:15:32,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:15:32,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 00:15:32,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347804215] [2021-11-23 00:15:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:15:32,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 00:15:32,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:15:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 00:15:32,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 00:15:32,266 INFO L87 Difference]: Start difference. First operand has 28612 states, 28584 states have (on average 1.3886789812482507) internal successors, (39694), 28589 states have internal predecessors, (39694), 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 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-23 00:15:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:15:33,312 INFO L93 Difference]: Finished difference Result 57216 states and 79454 transitions. [2021-11-23 00:15:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 00:15:33,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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 97 [2021-11-23 00:15:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:15:33,474 INFO L225 Difference]: With dead ends: 57216 [2021-11-23 00:15:33,474 INFO L226 Difference]: Without dead ends: 28594 [2021-11-23 00:15:33,554 INFO L932 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 [2021-11-23 00:15:33,557 INFO L933 BasicCegarLoop]: 39627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:15:33,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39627 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:15:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28594 states. [2021-11-23 00:15:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28594 to 28594. [2021-11-23 00:15:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28594 states, 28567 states have (on average 1.385269716806105) internal successors, (39573), 28571 states have internal predecessors, (39573), 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) [2021-11-23 00:15:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28594 states to 28594 states and 39603 transitions. [2021-11-23 00:15:34,485 INFO L78 Accepts]: Start accepts. Automaton has 28594 states and 39603 transitions. Word has length 97 [2021-11-23 00:15:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:15:34,486 INFO L470 AbstractCegarLoop]: Abstraction has 28594 states and 39603 transitions. [2021-11-23 00:15:34,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-23 00:15:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 28594 states and 39603 transitions. [2021-11-23 00:15:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 00:15:34,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:15:34,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:15:34,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 00:15:34,496 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)] === [2021-11-23 00:15:34,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:15:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1781201098, now seen corresponding path program 1 times [2021-11-23 00:15:34,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:15:34,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033440200] [2021-11-23 00:15:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:15:34,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:15:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:15:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:15:34,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:15:34,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033440200] [2021-11-23 00:15:34,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033440200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:15:34,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:15:34,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 00:15:34,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383867224] [2021-11-23 00:15:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:15:34,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:15:34,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:15:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:15:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:15:34,754 INFO L87 Difference]: Start difference. First operand 28594 states and 39603 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-23 00:15:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:15:36,622 INFO L93 Difference]: Finished difference Result 85617 states and 118647 transitions. [2021-11-23 00:15:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:15:36,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 97 [2021-11-23 00:15:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:15:36,773 INFO L225 Difference]: With dead ends: 85617 [2021-11-23 00:15:36,773 INFO L226 Difference]: Without dead ends: 52596 [2021-11-23 00:15:36,853 INFO L932 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 [2021-11-23 00:15:36,857 INFO L933 BasicCegarLoop]: 39617 mSDtfsCounter, 39498 mSDsluCounter, 39507 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39498 SdHoareTripleChecker+Valid, 79124 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:15:36,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39498 Valid, 79124 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:15:36,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52596 states. [2021-11-23 00:15:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52596 to 52590. [2021-11-23 00:15:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52590 states, 52540 states have (on average 1.3862580890749905) internal successors, (72834), 52545 states have internal predecessors, (72834), 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) [2021-11-23 00:15:38,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52590 states to 52590 states and 72899 transitions. [2021-11-23 00:15:38,098 INFO L78 Accepts]: Start accepts. Automaton has 52590 states and 72899 transitions. Word has length 97 [2021-11-23 00:15:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:15:38,101 INFO L470 AbstractCegarLoop]: Abstraction has 52590 states and 72899 transitions. [2021-11-23 00:15:38,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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) [2021-11-23 00:15:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 52590 states and 72899 transitions. [2021-11-23 00:15:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-23 00:15:38,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:15:38,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:15:38,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 00:15:38,144 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)] === [2021-11-23 00:15:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:15:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash 184020822, now seen corresponding path program 1 times [2021-11-23 00:15:38,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:15:38,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665707878] [2021-11-23 00:15:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:15:38,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:15:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:15:38,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-23 00:15:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:15:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:15:38,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:15:38,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665707878] [2021-11-23 00:15:38,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665707878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:15:38,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:15:38,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 00:15:38,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557680222] [2021-11-23 00:15:38,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:15:38,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 00:15:38,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:15:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 00:15:38,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 00:15:38,592 INFO L87 Difference]: Start difference. First operand 52590 states and 72899 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-23 00:16:05,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:16:05,665 INFO L93 Difference]: Finished difference Result 115488 states and 160016 transitions. [2021-11-23 00:16:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 00:16:05,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 130 [2021-11-23 00:16:05,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:16:05,887 INFO L225 Difference]: With dead ends: 115488 [2021-11-23 00:16:05,887 INFO L226 Difference]: Without dead ends: 62978 [2021-11-23 00:16:06,002 INFO L932 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 [2021-11-23 00:16:06,009 INFO L933 BasicCegarLoop]: 45776 mSDtfsCounter, 10397 mSDsluCounter, 65225 mSDsCounter, 0 mSdLazyCounter, 20104 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10397 SdHoareTripleChecker+Valid, 111001 SdHoareTripleChecker+Invalid, 20123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 20104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-11-23 00:16:06,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10397 Valid, 111001 Invalid, 20123 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19 Valid, 20104 Invalid, 0 Unknown, 0 Unchecked, 25.3s Time] [2021-11-23 00:16:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62978 states. [2021-11-23 00:16:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62978 to 58342. [2021-11-23 00:16:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58342 states, 58292 states have (on average 1.3856446853770672) internal successors, (80772), 58297 states have internal predecessors, (80772), 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) [2021-11-23 00:16:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58342 states to 58342 states and 80837 transitions. [2021-11-23 00:16:07,727 INFO L78 Accepts]: Start accepts. Automaton has 58342 states and 80837 transitions. Word has length 130 [2021-11-23 00:16:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:16:07,730 INFO L470 AbstractCegarLoop]: Abstraction has 58342 states and 80837 transitions. [2021-11-23 00:16:07,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-23 00:16:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 58342 states and 80837 transitions. [2021-11-23 00:16:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-23 00:16:07,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:16:07,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:16:07,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 00:16:07,778 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)] === [2021-11-23 00:16:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:16:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash -285480634, now seen corresponding path program 1 times [2021-11-23 00:16:07,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:16:07,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014661461] [2021-11-23 00:16:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:16:07,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:16:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:16:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-23 00:16:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:16:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:16:08,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:16:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014661461] [2021-11-23 00:16:08,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014661461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:16:08,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:16:08,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 00:16:08,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645925507] [2021-11-23 00:16:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:16:08,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 00:16:08,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:16:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 00:16:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:16:08,019 INFO L87 Difference]: Start difference. First operand 58342 states and 80837 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 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) [2021-11-23 00:16:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:16:30,757 INFO L93 Difference]: Finished difference Result 116747 states and 161761 transitions. [2021-11-23 00:16:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 00:16:30,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 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 [2021-11-23 00:16:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:16:30,911 INFO L225 Difference]: With dead ends: 116747 [2021-11-23 00:16:30,911 INFO L226 Difference]: Without dead ends: 58479 [2021-11-23 00:16:31,015 INFO L932 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 [2021-11-23 00:16:31,019 INFO L933 BasicCegarLoop]: 39560 mSDtfsCounter, 145 mSDsluCounter, 101616 mSDsCounter, 0 mSdLazyCounter, 17211 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 141176 SdHoareTripleChecker+Invalid, 17229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-23 00:16:31,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 141176 Invalid, 17229 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18 Valid, 17211 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2021-11-23 00:16:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58479 states. [2021-11-23 00:16:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58479 to 58345. [2021-11-23 00:16:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58345 states, 58295 states have (on average 1.3855905309203191) internal successors, (80773), 58300 states have internal predecessors, (80773), 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) [2021-11-23 00:16:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58345 states to 58345 states and 80838 transitions. [2021-11-23 00:16:32,403 INFO L78 Accepts]: Start accepts. Automaton has 58345 states and 80838 transitions. Word has length 149 [2021-11-23 00:16:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:16:32,404 INFO L470 AbstractCegarLoop]: Abstraction has 58345 states and 80838 transitions. [2021-11-23 00:16:32,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 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) [2021-11-23 00:16:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 58345 states and 80838 transitions. [2021-11-23 00:16:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-23 00:16:32,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:16:32,443 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:16:32,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 00:16:32,444 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)] === [2021-11-23 00:16:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:16:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1981068589, now seen corresponding path program 1 times [2021-11-23 00:16:32,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:16:32,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320401355] [2021-11-23 00:16:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:16:32,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:16:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:16:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-23 00:16:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:16:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:16:32,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:16:32,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320401355] [2021-11-23 00:16:32,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320401355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:16:32,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:16:32,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 00:16:32,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884744422] [2021-11-23 00:16:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:16:32,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 00:16:32,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:16:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 00:16:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 00:16:32,693 INFO L87 Difference]: Start difference. First operand 58345 states and 80838 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 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) [2021-11-23 00:16:51,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 00:16:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:16:56,700 INFO L93 Difference]: Finished difference Result 116761 states and 161771 transitions. [2021-11-23 00:16:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 00:16:56,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 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 153 [2021-11-23 00:16:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:16:56,831 INFO L225 Difference]: With dead ends: 116761 [2021-11-23 00:16:56,831 INFO L226 Difference]: Without dead ends: 58486 [2021-11-23 00:16:56,923 INFO L932 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 [2021-11-23 00:16:56,924 INFO L933 BasicCegarLoop]: 39563 mSDtfsCounter, 152 mSDsluCounter, 141174 mSDsCounter, 0 mSdLazyCounter, 17279 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 180737 SdHoareTripleChecker+Invalid, 17297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-11-23 00:16:56,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 180737 Invalid, 17297 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18 Valid, 17279 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2021-11-23 00:16:57,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58486 states. [2021-11-23 00:16:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58486 to 58347. [2021-11-23 00:16:57,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58347 states, 58297 states have (on average 1.3855429953513902) internal successors, (80773), 58302 states have internal predecessors, (80773), 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) [2021-11-23 00:16:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58347 states to 58347 states and 80838 transitions. [2021-11-23 00:16:58,069 INFO L78 Accepts]: Start accepts. Automaton has 58347 states and 80838 transitions. Word has length 153 [2021-11-23 00:16:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:16:58,069 INFO L470 AbstractCegarLoop]: Abstraction has 58347 states and 80838 transitions. [2021-11-23 00:16:58,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 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) [2021-11-23 00:16:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 58347 states and 80838 transitions. [2021-11-23 00:16:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-23 00:16:58,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:16:58,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:16:58,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 00:16:58,113 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)] === [2021-11-23 00:16:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:16:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1669601298, now seen corresponding path program 1 times [2021-11-23 00:16:58,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:16:58,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36240597] [2021-11-23 00:16:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:16:58,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:16:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:16:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-23 00:16:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:16:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:16:58,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:16:58,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36240597] [2021-11-23 00:16:58,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36240597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:16:58,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:16:58,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 00:16:58,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64581313] [2021-11-23 00:16:58,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:16:58,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 00:16:58,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:16:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 00:16:58,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 00:16:58,363 INFO L87 Difference]: Start difference. First operand 58347 states and 80838 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 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) [2021-11-23 00:17:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:17:32,171 INFO L93 Difference]: Finished difference Result 143741 states and 199522 transitions. [2021-11-23 00:17:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 00:17:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 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 153 [2021-11-23 00:17:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:17:32,344 INFO L225 Difference]: With dead ends: 143741 [2021-11-23 00:17:32,344 INFO L226 Difference]: Without dead ends: 85466 [2021-11-23 00:17:32,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 00:17:32,447 INFO L933 BasicCegarLoop]: 59841 mSDtfsCounter, 21782 mSDsluCounter, 193113 mSDsCounter, 0 mSdLazyCounter, 26182 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21787 SdHoareTripleChecker+Valid, 252954 SdHoareTripleChecker+Invalid, 26227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 26182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2021-11-23 00:17:32,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21787 Valid, 252954 Invalid, 26227 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [45 Valid, 26182 Invalid, 0 Unknown, 0 Unchecked, 31.3s Time] [2021-11-23 00:17:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85466 states. [2021-11-23 00:17:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85466 to 58350. [2021-11-23 00:17:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58350 states, 58300 states have (on average 1.3854888507718697) internal successors, (80774), 58305 states have internal predecessors, (80774), 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) [2021-11-23 00:17:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58350 states to 58350 states and 80839 transitions. [2021-11-23 00:17:33,863 INFO L78 Accepts]: Start accepts. Automaton has 58350 states and 80839 transitions. Word has length 153 [2021-11-23 00:17:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:17:33,864 INFO L470 AbstractCegarLoop]: Abstraction has 58350 states and 80839 transitions. [2021-11-23 00:17:33,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 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) [2021-11-23 00:17:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 58350 states and 80839 transitions. [2021-11-23 00:17:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 00:17:33,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:17:33,906 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:17:33,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 00:17:33,906 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)] === [2021-11-23 00:17:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:17:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash 792355530, now seen corresponding path program 1 times [2021-11-23 00:17:33,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:17:33,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654970587] [2021-11-23 00:17:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:17:33,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:17:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:17:34,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-23 00:17:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:17:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 00:17:34,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:17:34,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654970587] [2021-11-23 00:17:34,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654970587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:17:34,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:17:34,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 00:17:34,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566199462] [2021-11-23 00:17:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:17:34,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 00:17:34,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:17:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 00:17:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 00:17:34,227 INFO L87 Difference]: Start difference. First operand 58350 states and 80839 transitions. Second operand has 10 states, 10 states have (on average 15.2) internal successors, (152), 9 states have internal predecessors, (152), 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) [2021-11-23 00:17:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:17:58,781 INFO L93 Difference]: Finished difference Result 117043 states and 162181 transitions. [2021-11-23 00:17:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 00:17:58,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.2) internal successors, (152), 9 states have internal predecessors, (152), 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 159 [2021-11-23 00:17:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:17:58,921 INFO L225 Difference]: With dead ends: 117043 [2021-11-23 00:17:58,921 INFO L226 Difference]: Without dead ends: 58773 [2021-11-23 00:17:59,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-23 00:17:59,024 INFO L933 BasicCegarLoop]: 39635 mSDtfsCounter, 467 mSDsluCounter, 299797 mSDsCounter, 0 mSdLazyCounter, 17696 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 339432 SdHoareTripleChecker+Invalid, 17732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 17696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2021-11-23 00:17:59,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 339432 Invalid, 17732 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [36 Valid, 17696 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2021-11-23 00:17:59,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58773 states. [2021-11-23 00:18:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58773 to 58368. [2021-11-23 00:18:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58368 states, 58317 states have (on average 1.3853764768420873) internal successors, (80791), 58323 states have internal predecessors, (80791), 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) [2021-11-23 00:18:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58368 states to 58368 states and 80858 transitions. [2021-11-23 00:18:00,228 INFO L78 Accepts]: Start accepts. Automaton has 58368 states and 80858 transitions. Word has length 159 [2021-11-23 00:18:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:18:00,228 INFO L470 AbstractCegarLoop]: Abstraction has 58368 states and 80858 transitions. [2021-11-23 00:18:00,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.2) internal successors, (152), 9 states have internal predecessors, (152), 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) [2021-11-23 00:18:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand 58368 states and 80858 transitions. [2021-11-23 00:18:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 00:18:00,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:18:00,260 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:18:00,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 00:18:00,261 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)] === [2021-11-23 00:18:00,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:18:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1490916962, now seen corresponding path program 1 times [2021-11-23 00:18:00,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:18:00,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874569090] [2021-11-23 00:18:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:18:00,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:18:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:18:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-23 00:18:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:18:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 00:18:00,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:18:00,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874569090] [2021-11-23 00:18:00,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874569090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:18:00,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:18:00,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 00:18:00,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416692879] [2021-11-23 00:18:00,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:18:00,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 00:18:00,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:18:00,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 00:18:00,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:18:00,496 INFO L87 Difference]: Start difference. First operand 58368 states and 80858 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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) [2021-11-23 00:18:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:18:24,150 INFO L93 Difference]: Finished difference Result 116853 states and 161905 transitions. [2021-11-23 00:18:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 00:18:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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 165 [2021-11-23 00:18:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:18:24,281 INFO L225 Difference]: With dead ends: 116853 [2021-11-23 00:18:24,281 INFO L226 Difference]: Without dead ends: 58565 [2021-11-23 00:18:24,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 00:18:24,394 INFO L933 BasicCegarLoop]: 39575 mSDtfsCounter, 208 mSDsluCounter, 101641 mSDsCounter, 0 mSdLazyCounter, 17217 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 141216 SdHoareTripleChecker+Invalid, 17237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 17217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-11-23 00:18:24,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 141216 Invalid, 17237 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20 Valid, 17217 Invalid, 0 Unknown, 0 Unchecked, 21.8s Time] [2021-11-23 00:18:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58565 states. [2021-11-23 00:18:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58565 to 58372. [2021-11-23 00:18:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58372 states, 58321 states have (on average 1.3853500454381784) internal successors, (80795), 58327 states have internal predecessors, (80795), 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) [2021-11-23 00:18:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58372 states to 58372 states and 80862 transitions. [2021-11-23 00:18:25,681 INFO L78 Accepts]: Start accepts. Automaton has 58372 states and 80862 transitions. Word has length 165 [2021-11-23 00:18:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:18:25,681 INFO L470 AbstractCegarLoop]: Abstraction has 58372 states and 80862 transitions. [2021-11-23 00:18:25,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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) [2021-11-23 00:18:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 58372 states and 80862 transitions. [2021-11-23 00:18:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 00:18:25,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:18:25,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:18:25,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 00:18:25,968 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)] === [2021-11-23 00:18:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:18:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash -27615615, now seen corresponding path program 1 times [2021-11-23 00:18:25,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:18:25,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119558867] [2021-11-23 00:18:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:18:25,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:18:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:18:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-23 00:18:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:18:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 00:18:26,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:18:26,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119558867] [2021-11-23 00:18:26,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119558867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:18:26,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:18:26,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 00:18:26,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752453030] [2021-11-23 00:18:26,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:18:26,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 00:18:26,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:18:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 00:18:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 00:18:26,241 INFO L87 Difference]: Start difference. First operand 58372 states and 80862 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-23 00:18:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:18:48,959 INFO L93 Difference]: Finished difference Result 116830 states and 161844 transitions. [2021-11-23 00:18:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 00:18:48,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 167 [2021-11-23 00:18:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:18:49,068 INFO L225 Difference]: With dead ends: 116830 [2021-11-23 00:18:49,069 INFO L226 Difference]: Without dead ends: 58510 [2021-11-23 00:18:49,155 INFO L932 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 [2021-11-23 00:18:49,156 INFO L933 BasicCegarLoop]: 39556 mSDtfsCounter, 134 mSDsluCounter, 62010 mSDsCounter, 0 mSdLazyCounter, 17194 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 101566 SdHoareTripleChecker+Invalid, 17223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 17194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-11-23 00:18:49,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 101566 Invalid, 17223 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [29 Valid, 17194 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2021-11-23 00:18:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58510 states. [2021-11-23 00:18:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58510 to 58379. [2021-11-23 00:18:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58379 states, 58328 states have (on average 1.3853037992044988) internal successors, (80802), 58334 states have internal predecessors, (80802), 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) [2021-11-23 00:18:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58379 states to 58379 states and 80869 transitions. [2021-11-23 00:18:50,222 INFO L78 Accepts]: Start accepts. Automaton has 58379 states and 80869 transitions. Word has length 167 [2021-11-23 00:18:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:18:50,222 INFO L470 AbstractCegarLoop]: Abstraction has 58379 states and 80869 transitions. [2021-11-23 00:18:50,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-23 00:18:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 58379 states and 80869 transitions. [2021-11-23 00:18:50,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-23 00:18:50,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:18:50,249 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:18:50,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 00:18:50,250 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)] === [2021-11-23 00:18:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:18:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1551341722, now seen corresponding path program 1 times [2021-11-23 00:18:50,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:18:50,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359198308] [2021-11-23 00:18:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:18:50,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:18:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:18:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-23 00:18:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:18:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 00:18:50,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:18:50,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359198308] [2021-11-23 00:18:50,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359198308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:18:50,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063586085] [2021-11-23 00:18:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:18:50,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:18:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:18:50,905 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) [2021-11-23 00:18:50,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 00:18:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:18:52,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 00:18:52,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:18:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 00:18:52,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 00:18:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 00:18:53,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063586085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 00:18:53,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 00:18:53,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-23 00:18:53,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532185860] [2021-11-23 00:18:53,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 00:18:53,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 00:18:53,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:18:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 00:18:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 00:18:53,113 INFO L87 Difference]: Start difference. First operand 58379 states and 80869 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 00:19:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:19:17,981 INFO L93 Difference]: Finished difference Result 116901 states and 161973 transitions. [2021-11-23 00:19:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 00:19:17,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2021-11-23 00:19:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:19:18,101 INFO L225 Difference]: With dead ends: 116901 [2021-11-23 00:19:18,102 INFO L226 Difference]: Without dead ends: 58575 [2021-11-23 00:19:18,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-23 00:19:18,336 INFO L933 BasicCegarLoop]: 39544 mSDtfsCounter, 24167 mSDsluCounter, 77473 mSDsCounter, 0 mSdLazyCounter, 17366 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24172 SdHoareTripleChecker+Valid, 117017 SdHoareTripleChecker+Invalid, 17532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 17366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:19:18,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24172 Valid, 117017 Invalid, 17532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [166 Valid, 17366 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2021-11-23 00:19:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58575 states. [2021-11-23 00:19:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58575 to 58444. [2021-11-23 00:19:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58444 states, 58393 states have (on average 1.3848748993886253) internal successors, (80867), 58399 states have internal predecessors, (80867), 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) [2021-11-23 00:19:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58444 states to 58444 states and 80934 transitions. [2021-11-23 00:19:19,655 INFO L78 Accepts]: Start accepts. Automaton has 58444 states and 80934 transitions. Word has length 174 [2021-11-23 00:19:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:19:19,656 INFO L470 AbstractCegarLoop]: Abstraction has 58444 states and 80934 transitions. [2021-11-23 00:19:19,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 00:19:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 58444 states and 80934 transitions. [2021-11-23 00:19:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-23 00:19:19,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:19:19,688 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:19:19,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 00:19:19,888 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 [2021-11-23 00:19:19,889 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)] === [2021-11-23 00:19:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:19:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -356450559, now seen corresponding path program 1 times [2021-11-23 00:19:19,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:19:19,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115125964] [2021-11-23 00:19:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:19:19,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:19:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:19:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-23 00:19:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:19:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-23 00:19:20,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:19:20,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115125964] [2021-11-23 00:19:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115125964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:19:20,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974119760] [2021-11-23 00:19:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:19:20,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:19:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:19:20,515 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) [2021-11-23 00:19:20,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 00:19:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:19:27,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 3909 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 00:19:27,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:19:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 00:19:28,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 00:19:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-23 00:19:28,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974119760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 00:19:28,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 00:19:28,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 13 [2021-11-23 00:19:28,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196974652] [2021-11-23 00:19:28,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 00:19:28,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 00:19:28,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:19:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 00:19:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-23 00:19:28,498 INFO L87 Difference]: Start difference. First operand 58444 states and 80934 transitions. Second operand has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 12 states have internal predecessors, (189), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 00:19:55,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:19:55,575 INFO L93 Difference]: Finished difference Result 116986 states and 162020 transitions. [2021-11-23 00:19:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 00:19:55,576 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 12 states have internal predecessors, (189), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 199 [2021-11-23 00:19:55,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:19:55,684 INFO L225 Difference]: With dead ends: 116986 [2021-11-23 00:19:55,684 INFO L226 Difference]: Without dead ends: 58603 [2021-11-23 00:19:55,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-23 00:19:55,771 INFO L933 BasicCegarLoop]: 39544 mSDtfsCounter, 24167 mSDsluCounter, 235477 mSDsCounter, 0 mSdLazyCounter, 17986 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24172 SdHoareTripleChecker+Valid, 275021 SdHoareTripleChecker+Invalid, 18209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 17986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2021-11-23 00:19:55,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24172 Valid, 275021 Invalid, 18209 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [223 Valid, 17986 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2021-11-23 00:19:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58603 states. [2021-11-23 00:19:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58603 to 58472. [2021-11-23 00:19:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58472 states, 58421 states have (on average 1.384690436658051) internal successors, (80895), 58427 states have internal predecessors, (80895), 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) [2021-11-23 00:19:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58472 states to 58472 states and 80962 transitions. [2021-11-23 00:19:56,998 INFO L78 Accepts]: Start accepts. Automaton has 58472 states and 80962 transitions. Word has length 199 [2021-11-23 00:19:56,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:19:56,998 INFO L470 AbstractCegarLoop]: Abstraction has 58472 states and 80962 transitions. [2021-11-23 00:19:56,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 12 states have internal predecessors, (189), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 00:19:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 58472 states and 80962 transitions. [2021-11-23 00:19:57,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-23 00:19:57,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:19:57,023 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:19:57,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 00:19:57,223 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 [2021-11-23 00:19:57,224 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)] === [2021-11-23 00:19:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:19:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash -690824063, now seen corresponding path program 2 times [2021-11-23 00:19:57,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:19:57,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109462459] [2021-11-23 00:19:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:19:57,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:19:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:19:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-23 00:19:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:19:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-23 00:19:58,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:19:58,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109462459] [2021-11-23 00:19:58,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109462459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:19:58,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935734967] [2021-11-23 00:19:58,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 00:19:58,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:19:58,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:19:58,190 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) [2021-11-23 00:19:58,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 00:20:00,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 00:20:00,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 00:20:00,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 00:20:00,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:20:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-23 00:20:01,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:20:01,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935734967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:20:01,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:20:01,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2021-11-23 00:20:01,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53286524] [2021-11-23 00:20:01,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:20:01,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 00:20:01,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:20:01,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 00:20:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-23 00:20:01,110 INFO L87 Difference]: Start difference. First operand 58472 states and 80962 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 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) [2021-11-23 00:20:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:20:03,887 INFO L93 Difference]: Finished difference Result 117046 states and 162119 transitions. [2021-11-23 00:20:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 00:20:03,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 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 207 [2021-11-23 00:20:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:20:04,001 INFO L225 Difference]: With dead ends: 117046 [2021-11-23 00:20:04,001 INFO L226 Difference]: Without dead ends: 58694 [2021-11-23 00:20:04,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 00:20:04,087 INFO L933 BasicCegarLoop]: 39683 mSDtfsCounter, 1040 mSDsluCounter, 316284 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 355967 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 00:20:04,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 355967 Invalid, 371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 00:20:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58694 states. [2021-11-23 00:20:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58694 to 58472. [2021-11-23 00:20:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58472 states, 58421 states have (on average 1.384690436658051) internal successors, (80895), 58427 states have internal predecessors, (80895), 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) [2021-11-23 00:20:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58472 states to 58472 states and 80962 transitions. [2021-11-23 00:20:05,329 INFO L78 Accepts]: Start accepts. Automaton has 58472 states and 80962 transitions. Word has length 207 [2021-11-23 00:20:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:20:05,329 INFO L470 AbstractCegarLoop]: Abstraction has 58472 states and 80962 transitions. [2021-11-23 00:20:05,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 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) [2021-11-23 00:20:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand 58472 states and 80962 transitions. [2021-11-23 00:20:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-23 00:20:05,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:20:05,519 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:20:05,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 00:20:05,719 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 [2021-11-23 00:20:05,720 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)] === [2021-11-23 00:20:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:20:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1861918605, now seen corresponding path program 1 times [2021-11-23 00:20:05,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:20:05,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171349142] [2021-11-23 00:20:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:20:05,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:20:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:20:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-23 00:20:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:20:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-23 00:20:06,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:20:06,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171349142] [2021-11-23 00:20:06,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171349142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:20:06,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:20:06,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 00:20:06,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813127466] [2021-11-23 00:20:06,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:20:06,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 00:20:06,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:20:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 00:20:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 00:20:06,009 INFO L87 Difference]: Start difference. First operand 58472 states and 80962 transitions. Second operand has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 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) [2021-11-23 00:20:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:20:28,767 INFO L93 Difference]: Finished difference Result 117153 states and 162242 transitions. [2021-11-23 00:20:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 00:20:28,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 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 220 [2021-11-23 00:20:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:20:28,872 INFO L225 Difference]: With dead ends: 117153 [2021-11-23 00:20:28,872 INFO L226 Difference]: Without dead ends: 58801 [2021-11-23 00:20:28,952 INFO L932 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 [2021-11-23 00:20:28,953 INFO L933 BasicCegarLoop]: 39608 mSDtfsCounter, 265 mSDsluCounter, 180891 mSDsCounter, 0 mSdLazyCounter, 17393 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 220499 SdHoareTripleChecker+Invalid, 17418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 17393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:20:28,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 220499 Invalid, 17418 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [25 Valid, 17393 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2021-11-23 00:20:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58801 states. [2021-11-23 00:20:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58801 to 58480. [2021-11-23 00:20:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58480 states, 58429 states have (on average 1.3846377654931625) internal successors, (80903), 58435 states have internal predecessors, (80903), 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) [2021-11-23 00:20:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58480 states to 58480 states and 80970 transitions. [2021-11-23 00:20:30,165 INFO L78 Accepts]: Start accepts. Automaton has 58480 states and 80970 transitions. Word has length 220 [2021-11-23 00:20:30,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:20:30,166 INFO L470 AbstractCegarLoop]: Abstraction has 58480 states and 80970 transitions. [2021-11-23 00:20:30,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 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) [2021-11-23 00:20:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 58480 states and 80970 transitions. [2021-11-23 00:20:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-23 00:20:30,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:20:30,200 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:20:30,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 00:20:30,200 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)] === [2021-11-23 00:20:30,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:20:30,200 INFO L85 PathProgramCache]: Analyzing trace with hash -826499749, now seen corresponding path program 1 times [2021-11-23 00:20:30,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:20:30,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548541719] [2021-11-23 00:20:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:20:30,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:20:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:20:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-11-23 00:20:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:20:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-23 00:20:31,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:20:31,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548541719] [2021-11-23 00:20:31,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548541719] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:20:31,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985342789] [2021-11-23 00:20:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:20:31,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:20:31,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:20:31,096 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) [2021-11-23 00:20:31,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 00:20:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:20:35,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 4427 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 00:20:35,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:20:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-23 00:20:35,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 00:20:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-23 00:20:36,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985342789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 00:20:36,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 00:20:36,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2021-11-23 00:20:36,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988246626] [2021-11-23 00:20:36,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 00:20:36,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 00:20:36,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:20:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 00:20:36,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-11-23 00:20:36,107 INFO L87 Difference]: Start difference. First operand 58480 states and 80970 transitions. Second operand has 18 states, 18 states have (on average 11.777777777777779) internal successors, (212), 17 states have internal predecessors, (212), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 00:20:53,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 00:21:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:21:08,269 INFO L93 Difference]: Finished difference Result 117110 states and 162200 transitions. [2021-11-23 00:21:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 00:21:08,270 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.777777777777779) internal successors, (212), 17 states have internal predecessors, (212), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 226 [2021-11-23 00:21:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:21:08,374 INFO L225 Difference]: With dead ends: 117110 [2021-11-23 00:21:08,375 INFO L226 Difference]: Without dead ends: 58695 [2021-11-23 00:21:08,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-23 00:21:08,477 INFO L933 BasicCegarLoop]: 39544 mSDtfsCounter, 134 mSDsluCounter, 338552 mSDsCounter, 0 mSdLazyCounter, 18012 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 378096 SdHoareTripleChecker+Invalid, 18458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 18012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-11-23 00:21:08,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 378096 Invalid, 18458 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [446 Valid, 18012 Invalid, 0 Unknown, 0 Unchecked, 27.3s Time] [2021-11-23 00:21:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58695 states. [2021-11-23 00:21:09,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58695 to 58564. [2021-11-23 00:21:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58564 states, 58513 states have (on average 1.3840855878180918) internal successors, (80987), 58519 states have internal predecessors, (80987), 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) [2021-11-23 00:21:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58564 states to 58564 states and 81054 transitions. [2021-11-23 00:21:09,737 INFO L78 Accepts]: Start accepts. Automaton has 58564 states and 81054 transitions. Word has length 226 [2021-11-23 00:21:09,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:21:09,737 INFO L470 AbstractCegarLoop]: Abstraction has 58564 states and 81054 transitions. [2021-11-23 00:21:09,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.777777777777779) internal successors, (212), 17 states have internal predecessors, (212), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 00:21:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 58564 states and 81054 transitions. [2021-11-23 00:21:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-23 00:21:09,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:21:09,770 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:21:09,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 00:21:09,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:21:09,971 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 00:21:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:21:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1662961307, now seen corresponding path program 2 times [2021-11-23 00:21:09,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:21:09,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759094890] [2021-11-23 00:21:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:21:09,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:21:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:21:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-23 00:21:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:21:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-23 00:21:17,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:21:17,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759094890] [2021-11-23 00:21:17,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759094890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:21:17,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:21:17,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-23 00:21:17,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015657064] [2021-11-23 00:21:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:21:17,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 00:21:17,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:21:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 00:21:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2021-11-23 00:21:17,839 INFO L87 Difference]: Start difference. First operand 58564 states and 81054 transitions. Second operand has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 19 states have internal predecessors, (190), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 00:21:50,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 00:22:07,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 00:22:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:22:21,443 INFO L93 Difference]: Finished difference Result 117595 states and 162715 transitions. [2021-11-23 00:22:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 00:22:21,444 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 19 states have internal predecessors, (190), 3 states have call successors, (4), 4 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 230 [2021-11-23 00:22:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:22:21,549 INFO L225 Difference]: With dead ends: 117595 [2021-11-23 00:22:21,549 INFO L226 Difference]: Without dead ends: 59155 [2021-11-23 00:22:21,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=255, Invalid=1637, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 00:22:21,656 INFO L933 BasicCegarLoop]: 39439 mSDtfsCounter, 112906 mSDsluCounter, 553884 mSDsCounter, 0 mSdLazyCounter, 47650 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112906 SdHoareTripleChecker+Valid, 593323 SdHoareTripleChecker+Invalid, 47870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 47650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.2s IncrementalHoareTripleChecker+Time [2021-11-23 00:22:21,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112906 Valid, 593323 Invalid, 47870 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [220 Valid, 47650 Invalid, 0 Unknown, 0 Unchecked, 59.2s Time] [2021-11-23 00:22:21,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59155 states. [2021-11-23 00:22:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59155 to 58939. [2021-11-23 00:22:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58939 states, 58877 states have (on average 1.383273604293697) internal successors, (81443), 58885 states have internal predecessors, (81443), 36 states have call successors, (36), 20 states have call predecessors, (36), 22 states have return successors, (44), 35 states have call predecessors, (44), 36 states have call successors, (44) [2021-11-23 00:22:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58939 states to 58939 states and 81523 transitions. [2021-11-23 00:22:23,048 INFO L78 Accepts]: Start accepts. Automaton has 58939 states and 81523 transitions. Word has length 230 [2021-11-23 00:22:23,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:22:23,049 INFO L470 AbstractCegarLoop]: Abstraction has 58939 states and 81523 transitions. [2021-11-23 00:22:23,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 19 states have internal predecessors, (190), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 00:22:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 58939 states and 81523 transitions. [2021-11-23 00:22:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-23 00:22:23,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:22:23,093 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:22:23,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 00:22:23,093 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 00:22:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:22:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1641540121, now seen corresponding path program 1 times [2021-11-23 00:22:23,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:22:23,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761449008] [2021-11-23 00:22:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:22:23,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:22:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:22:24,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-23 00:22:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:22:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-23 00:22:24,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:22:24,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761449008] [2021-11-23 00:22:24,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761449008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:22:24,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:22:24,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 00:22:24,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427114718] [2021-11-23 00:22:24,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:22:24,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 00:22:24,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:22:24,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 00:22:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 00:22:24,127 INFO L87 Difference]: Start difference. First operand 58939 states and 81523 transitions. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 5 states have internal predecessors, (199), 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)