/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:18:54,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:18:54,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:18:54,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:18:54,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:18:54,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:18:54,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:18:54,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:18:54,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:18:54,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:18:54,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:18:54,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:18:54,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:18:54,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:18:54,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:18:54,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:18:54,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:18:54,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:18:54,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:18:54,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:18:54,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:18:54,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:18:54,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:18:54,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:18:54,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:18:54,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:18:54,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:18:54,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:18:54,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:18:54,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:18:54,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:18:54,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:18:54,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:18:54,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:18:54,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:18:54,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:18:54,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:18:54,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:18:54,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:18:54,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:18:54,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:18:54,695 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:18:54,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:18:54,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:18:54,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:18:54,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:18:54,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:18:54,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:18:54,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:18:54,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:18:54,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:18:54,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:18:54,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:18:54,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:18:54,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:18:54,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:18:54,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:18:54,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:18:54,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:18:54,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:18:54,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:18:54,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:18:54,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:18:55,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:18:55,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:18:55,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:18:55,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:18:55,099 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:18:55,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i [2020-12-22 13:18:55,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ec9d258/32cb94e3f2434cb9ac586e5de7d44d64/FLAG4e3225757 [2020-12-22 13:18:56,435 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:18:56,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i [2020-12-22 13:18:56,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ec9d258/32cb94e3f2434cb9ac586e5de7d44d64/FLAG4e3225757 [2020-12-22 13:18:56,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61ec9d258/32cb94e3f2434cb9ac586e5de7d44d64 [2020-12-22 13:18:56,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:18:56,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:18:56,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:18:56,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:18:56,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:18:56,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:18:56" (1/1) ... [2020-12-22 13:18:56,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@baa2f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:18:56, skipping insertion in model container [2020-12-22 13:18:56,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:18:56" (1/1) ... [2020-12-22 13:18:56,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:18:57,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:18:59,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i[210062,210075] [2020-12-22 13:19:02,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:19:02,636 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:19:02,880 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i[210062,210075] [2020-12-22 13:19:03,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:19:05,544 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:19:05,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05 WrapperNode [2020-12-22 13:19:05,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:19:05,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:19:05,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:19:05,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:19:05,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:05,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:11,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:19:11,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:19:11,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:19:11,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:19:11,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:11,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:12,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:12,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:14,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:14,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:15,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... [2020-12-22 13:19:16,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:19:16,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:19:16,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:19:16,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:19:16,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:19:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2020-12-22 13:19:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:19:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:19:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:19:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:19:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:19:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:19:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:19:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:19:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:19:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:19:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:19:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 13:19:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:19:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:19:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:19:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:19:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:19:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-22 13:21:00,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:21:00,811 INFO L299 CfgBuilder]: Removed 27112 assume(true) statements. [2020-12-22 13:21:00,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:21:00 BoogieIcfgContainer [2020-12-22 13:21:00,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:21:00,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:21:00,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:21:00,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:21:00,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:18:56" (1/3) ... [2020-12-22 13:21:00,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2a3800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:21:00, skipping insertion in model container [2020-12-22 13:21:00,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:05" (2/3) ... [2020-12-22 13:21:00,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2a3800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:21:00, skipping insertion in model container [2020-12-22 13:21:00,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:21:00" (3/3) ... [2020-12-22 13:21:00,842 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i [2020-12-22 13:21:00,849 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:21:00,860 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:21:00,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:21:00,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:21:00,974 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:21:00,975 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:21:00,975 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:21:00,975 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:21:00,975 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:21:00,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:21:00,975 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:21:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 19176 states. [2020-12-22 13:21:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 13:21:01,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:01,239 INFO L422 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] [2020-12-22 13:21:01,239 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash 328594732, now seen corresponding path program 1 times [2020-12-22 13:21:01,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:01,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273877976] [2020-12-22 13:21:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:21:02,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273877976] [2020-12-22 13:21:02,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:02,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:21:02,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343280270] [2020-12-22 13:21:02,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:21:02,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:02,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:21:02,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:02,536 INFO L87 Difference]: Start difference. First operand 19176 states. Second operand 3 states. [2020-12-22 13:21:03,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:03,839 INFO L93 Difference]: Finished difference Result 38342 states and 48235 transitions. [2020-12-22 13:21:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:21:03,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 13:21:03,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:03,958 INFO L225 Difference]: With dead ends: 38342 [2020-12-22 13:21:03,958 INFO L226 Difference]: Without dead ends: 19094 [2020-12-22 13:21:04,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19094 states. [2020-12-22 13:21:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19094 to 19094. [2020-12-22 13:21:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19094 states. [2020-12-22 13:21:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19094 states to 19094 states and 23874 transitions. [2020-12-22 13:21:04,759 INFO L78 Accepts]: Start accepts. Automaton has 19094 states and 23874 transitions. Word has length 51 [2020-12-22 13:21:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:04,761 INFO L481 AbstractCegarLoop]: Abstraction has 19094 states and 23874 transitions. [2020-12-22 13:21:04,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:21:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19094 states and 23874 transitions. [2020-12-22 13:21:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 13:21:04,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:04,771 INFO L422 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] [2020-12-22 13:21:04,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:21:04,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1292342558, now seen corresponding path program 1 times [2020-12-22 13:21:04,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:04,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359140956] [2020-12-22 13:21:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:21:05,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359140956] [2020-12-22 13:21:05,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:05,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:21:05,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704391784] [2020-12-22 13:21:05,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:21:05,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:05,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:21:05,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:05,650 INFO L87 Difference]: Start difference. First operand 19094 states and 23874 transitions. Second operand 3 states. [2020-12-22 13:21:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:09,381 INFO L93 Difference]: Finished difference Result 56903 states and 71199 transitions. [2020-12-22 13:21:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:21:09,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 13:21:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:09,537 INFO L225 Difference]: With dead ends: 56903 [2020-12-22 13:21:09,537 INFO L226 Difference]: Without dead ends: 37933 [2020-12-22 13:21:09,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37933 states. [2020-12-22 13:21:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37933 to 37933. [2020-12-22 13:21:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37933 states. [2020-12-22 13:21:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37933 states to 37933 states and 47460 transitions. [2020-12-22 13:21:11,171 INFO L78 Accepts]: Start accepts. Automaton has 37933 states and 47460 transitions. Word has length 52 [2020-12-22 13:21:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:11,172 INFO L481 AbstractCegarLoop]: Abstraction has 37933 states and 47460 transitions. [2020-12-22 13:21:11,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:21:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37933 states and 47460 transitions. [2020-12-22 13:21:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 13:21:11,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:11,180 INFO L422 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] [2020-12-22 13:21:11,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:21:11,180 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:11,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1189323507, now seen corresponding path program 1 times [2020-12-22 13:21:11,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:11,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564730335] [2020-12-22 13:21:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:21:11,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564730335] [2020-12-22 13:21:11,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:11,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:21:11,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542072078] [2020-12-22 13:21:11,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:21:11,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:11,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:21:11,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:21:11,827 INFO L87 Difference]: Start difference. First operand 37933 states and 47460 transitions. Second operand 5 states. [2020-12-22 13:21:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:14,580 INFO L93 Difference]: Finished difference Result 75742 states and 94782 transitions. [2020-12-22 13:21:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:21:14,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 13:21:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:14,801 INFO L225 Difference]: With dead ends: 75742 [2020-12-22 13:21:14,801 INFO L226 Difference]: Without dead ends: 75732 [2020-12-22 13:21:14,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:21:14,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75732 states. [2020-12-22 13:21:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75732 to 75700. [2020-12-22 13:21:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75700 states. [2020-12-22 13:21:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75700 states to 75700 states and 94730 transitions. [2020-12-22 13:21:17,666 INFO L78 Accepts]: Start accepts. Automaton has 75700 states and 94730 transitions. Word has length 58 [2020-12-22 13:21:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:17,667 INFO L481 AbstractCegarLoop]: Abstraction has 75700 states and 94730 transitions. [2020-12-22 13:21:17,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:21:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 75700 states and 94730 transitions. [2020-12-22 13:21:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-22 13:21:17,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:17,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:21:17,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:21:17,716 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:17,716 INFO L82 PathProgramCache]: Analyzing trace with hash -336807266, now seen corresponding path program 1 times [2020-12-22 13:21:17,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:17,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986795079] [2020-12-22 13:21:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:21:18,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986795079] [2020-12-22 13:21:18,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:18,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:21:18,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806292556] [2020-12-22 13:21:18,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:21:18,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:18,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:21:18,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:18,439 INFO L87 Difference]: Start difference. First operand 75700 states and 94730 transitions. Second operand 3 states. [2020-12-22 13:21:22,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:22,130 INFO L93 Difference]: Finished difference Result 201338 states and 251810 transitions. [2020-12-22 13:21:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:21:22,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-12-22 13:21:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:22,497 INFO L225 Difference]: With dead ends: 201338 [2020-12-22 13:21:22,497 INFO L226 Difference]: Without dead ends: 125762 [2020-12-22 13:21:22,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125762 states. [2020-12-22 13:21:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125762 to 125674. [2020-12-22 13:21:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125674 states. [2020-12-22 13:21:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125674 states to 125674 states and 157118 transitions. [2020-12-22 13:21:27,028 INFO L78 Accepts]: Start accepts. Automaton has 125674 states and 157118 transitions. Word has length 177 [2020-12-22 13:21:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:27,028 INFO L481 AbstractCegarLoop]: Abstraction has 125674 states and 157118 transitions. [2020-12-22 13:21:27,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:21:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 125674 states and 157118 transitions. [2020-12-22 13:21:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 13:21:27,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:27,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:21:27,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:21:27,130 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:27,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:27,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1544980749, now seen corresponding path program 1 times [2020-12-22 13:21:27,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:27,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151886768] [2020-12-22 13:21:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:21:27,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151886768] [2020-12-22 13:21:27,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:27,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:21:27,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826097454] [2020-12-22 13:21:27,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:21:27,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:27,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:21:27,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:27,846 INFO L87 Difference]: Start difference. First operand 125674 states and 157118 transitions. Second operand 3 states. [2020-12-22 13:21:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:31,980 INFO L93 Difference]: Finished difference Result 251228 states and 314106 transitions. [2020-12-22 13:21:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:21:31,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-12-22 13:21:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:32,389 INFO L225 Difference]: With dead ends: 251228 [2020-12-22 13:21:32,389 INFO L226 Difference]: Without dead ends: 125678 [2020-12-22 13:21:32,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:32,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125678 states. [2020-12-22 13:21:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125678 to 125678. [2020-12-22 13:21:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125678 states. [2020-12-22 13:21:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125678 states to 125678 states and 157122 transitions. [2020-12-22 13:21:36,047 INFO L78 Accepts]: Start accepts. Automaton has 125678 states and 157122 transitions. Word has length 218 [2020-12-22 13:21:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:36,048 INFO L481 AbstractCegarLoop]: Abstraction has 125678 states and 157122 transitions. [2020-12-22 13:21:36,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:21:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 125678 states and 157122 transitions. [2020-12-22 13:21:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 13:21:36,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:36,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:21:36,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:21:36,094 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:36,095 INFO L82 PathProgramCache]: Analyzing trace with hash 883277873, now seen corresponding path program 1 times [2020-12-22 13:21:36,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:36,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384832534] [2020-12-22 13:21:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:21:36,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384832534] [2020-12-22 13:21:36,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:36,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:21:36,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556209619] [2020-12-22 13:21:36,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:21:36,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:36,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:21:36,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:21:36,628 INFO L87 Difference]: Start difference. First operand 125678 states and 157122 transitions. Second operand 4 states. [2020-12-22 13:21:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:21:40,839 INFO L93 Difference]: Finished difference Result 251244 states and 314122 transitions. [2020-12-22 13:21:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:21:40,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-12-22 13:21:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:21:41,189 INFO L225 Difference]: With dead ends: 251244 [2020-12-22 13:21:41,189 INFO L226 Difference]: Without dead ends: 125690 [2020-12-22 13:21:41,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:21:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125690 states. [2020-12-22 13:21:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125690 to 125686. [2020-12-22 13:21:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125686 states. [2020-12-22 13:21:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125686 states to 125686 states and 157130 transitions. [2020-12-22 13:21:44,696 INFO L78 Accepts]: Start accepts. Automaton has 125686 states and 157130 transitions. Word has length 218 [2020-12-22 13:21:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:21:44,700 INFO L481 AbstractCegarLoop]: Abstraction has 125686 states and 157130 transitions. [2020-12-22 13:21:44,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:21:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 125686 states and 157130 transitions. [2020-12-22 13:21:44,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 13:21:44,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:21:44,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:21:44,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:21:44,751 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:21:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:21:44,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2022395409, now seen corresponding path program 1 times [2020-12-22 13:21:44,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:21:44,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30843022] [2020-12-22 13:21:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:21:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:21:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:21:45,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30843022] [2020-12-22 13:21:45,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:21:45,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:21:45,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196301777] [2020-12-22 13:21:45,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:21:45,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:21:45,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:21:45,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:21:45,770 INFO L87 Difference]: Start difference. First operand 125686 states and 157130 transitions. Second operand 3 states.