/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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:49:28,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:49:28,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:49:28,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:49:28,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:49:28,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:49:28,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:49:28,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:49:28,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:49:28,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:49:28,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:49:28,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:49:28,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:49:28,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:49:28,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:49:28,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:49:28,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:49:28,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:49:28,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:49:28,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:49:28,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:49:28,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:49:28,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:49:28,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:49:28,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:49:28,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:49:28,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:49:28,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:49:28,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:49:28,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:49:28,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:49:28,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:49:28,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:49:28,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:49:28,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:49:28,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:49:28,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:49:28,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:49:28,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:49:28,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:49:28,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:49:28,594 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:49:28,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:49:28,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:49:28,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:49:28,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:49:28,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:49:28,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:49:28,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:49:28,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:49:28,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:49:28,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:49:28,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:49:28,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:49:28,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:49:28,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:49:28,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:49:28,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:49:28,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:49:28,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:49:28,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:49:28,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:49:28,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:49:28,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:49:29,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:49:29,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:49:29,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:49:29,030 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:49:29,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:29,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2781fb/ae23bd9f996e4e43b9ffc30ff06b0996/FLAG57855945b [2020-12-22 13:49:30,227 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:49:30,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:30,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2781fb/ae23bd9f996e4e43b9ffc30ff06b0996/FLAG57855945b [2020-12-22 13:49:30,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2781fb/ae23bd9f996e4e43b9ffc30ff06b0996 [2020-12-22 13:49:30,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:49:30,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:49:30,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:30,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:49:30,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:49:30,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:30" (1/1) ... [2020-12-22 13:49:30,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60766a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:30, skipping insertion in model container [2020-12-22 13:49:30,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:30" (1/1) ... [2020-12-22 13:49:30,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:49:30,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:49:32,449 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2020-12-22 13:49:32,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:32,552 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:49:33,054 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2020-12-22 13:49:33,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:33,359 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:49:33,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33 WrapperNode [2020-12-22 13:49:33,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:33,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:33,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:49:33,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:49:33,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:33,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:34,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:34,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:49:34,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:49:34,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:49:34,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:34,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:35,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:35,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:36,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:36,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:36,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (1/1) ... [2020-12-22 13:49:36,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:49:36,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:49:36,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:49:36,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:49:36,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (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 13:49:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:49:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:49:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:49:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:49:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:49:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:49:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:49:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:49:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:49:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:49:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:49:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:49:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:49:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:49:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:49:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:49:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:53:12,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:53:12,681 INFO L299 CfgBuilder]: Removed 5913 assume(true) statements. [2020-12-22 13:53:12,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:53:12 BoogieIcfgContainer [2020-12-22 13:53:12,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:53:12,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:53:12,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:53:12,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:53:12,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:49:30" (1/3) ... [2020-12-22 13:53:12,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3407e03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:53:12, skipping insertion in model container [2020-12-22 13:53:12,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:33" (2/3) ... [2020-12-22 13:53:12,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3407e03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:53:12, skipping insertion in model container [2020-12-22 13:53:12,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:53:12" (3/3) ... [2020-12-22 13:53:12,699 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:53:12,706 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:53:12,713 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 13:53:12,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 13:53:12,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:53:12,784 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:53:12,784 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:53:12,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:53:12,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:53:12,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:53:12,785 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:53:12,785 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:53:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states. [2020-12-22 13:53:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 13:53:12,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:53:12,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:53:12,901 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:53:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:53:12,908 INFO L82 PathProgramCache]: Analyzing trace with hash -597361012, now seen corresponding path program 1 times [2020-12-22 13:53:12,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:53:12,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562467316] [2020-12-22 13:53:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:53:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:53:14,082 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 13:53:14,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562467316] [2020-12-22 13:53:14,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:53:14,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:53:14,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993887474] [2020-12-22 13:53:14,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:53:14,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:53:14,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:53:14,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:53:14,110 INFO L87 Difference]: Start difference. First operand 6793 states. Second operand 2 states. [2020-12-22 13:53:14,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:53:14,366 INFO L93 Difference]: Finished difference Result 13582 states and 19811 transitions. [2020-12-22 13:53:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:53:14,367 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2020-12-22 13:53:14,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:53:14,426 INFO L225 Difference]: With dead ends: 13582 [2020-12-22 13:53:14,426 INFO L226 Difference]: Without dead ends: 6781 [2020-12-22 13:53:14,446 INFO L677 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 [2020-12-22 13:53:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2020-12-22 13:53:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6781. [2020-12-22 13:53:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6781 states. [2020-12-22 13:53:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9682 transitions. [2020-12-22 13:53:14,727 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9682 transitions. Word has length 67 [2020-12-22 13:53:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:53:14,728 INFO L481 AbstractCegarLoop]: Abstraction has 6781 states and 9682 transitions. [2020-12-22 13:53:14,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:53:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9682 transitions. [2020-12-22 13:53:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 13:53:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:53:14,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:53:14,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:53:14,732 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:53:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:53:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1226720446, now seen corresponding path program 1 times [2020-12-22 13:53:14,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:53:14,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132803972] [2020-12-22 13:53:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:53:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:53:15,449 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 13:53:15,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132803972] [2020-12-22 13:53:15,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:53:15,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:53:15,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037685232] [2020-12-22 13:53:15,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:53:15,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:53:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:53:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:53:15,455 INFO L87 Difference]: Start difference. First operand 6781 states and 9682 transitions. Second operand 3 states. [2020-12-22 13:53:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:53:18,260 INFO L93 Difference]: Finished difference Result 20143 states and 28812 transitions. [2020-12-22 13:53:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:53:18,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 13:53:18,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:53:18,335 INFO L225 Difference]: With dead ends: 20143 [2020-12-22 13:53:18,336 INFO L226 Difference]: Without dead ends: 13421 [2020-12-22 13:53:18,353 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 13:53:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2020-12-22 13:53:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 13421. [2020-12-22 13:53:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13421 states. [2020-12-22 13:53:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 19198 transitions. [2020-12-22 13:53:19,171 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 19198 transitions. Word has length 67 [2020-12-22 13:53:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:53:19,172 INFO L481 AbstractCegarLoop]: Abstraction has 13421 states and 19198 transitions. [2020-12-22 13:53:19,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:53:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 19198 transitions. [2020-12-22 13:53:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:53:19,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:53:19,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:53:19,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:53:19,180 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:53:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:53:19,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2061512005, now seen corresponding path program 1 times [2020-12-22 13:53:19,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:53:19,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831535712] [2020-12-22 13:53:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:53:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:53:20,035 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 13:53:20,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831535712] [2020-12-22 13:53:20,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:53:20,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:53:20,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456635499] [2020-12-22 13:53:20,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:53:20,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:53:20,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:53:20,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:53:20,081 INFO L87 Difference]: Start difference. First operand 13421 states and 19198 transitions. Second operand 3 states. [2020-12-22 13:53:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:53:20,824 INFO L93 Difference]: Finished difference Result 26779 states and 38322 transitions. [2020-12-22 13:53:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:53:20,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 13:53:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:53:20,929 INFO L225 Difference]: With dead ends: 26779 [2020-12-22 13:53:20,929 INFO L226 Difference]: Without dead ends: 26768 [2020-12-22 13:53:20,937 INFO L677 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 [2020-12-22 13:53:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26768 states. [2020-12-22 13:53:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26768 to 26768. [2020-12-22 13:53:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26768 states. [2020-12-22 13:53:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26768 states to 26768 states and 38310 transitions. [2020-12-22 13:53:21,710 INFO L78 Accepts]: Start accepts. Automaton has 26768 states and 38310 transitions. Word has length 79 [2020-12-22 13:53:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:53:21,712 INFO L481 AbstractCegarLoop]: Abstraction has 26768 states and 38310 transitions. [2020-12-22 13:53:21,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:53:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 26768 states and 38310 transitions. [2020-12-22 13:53:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:53:21,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:53:21,719 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, 1, 1, 1, 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 13:53:21,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:53:21,720 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:53:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:53:21,720 INFO L82 PathProgramCache]: Analyzing trace with hash 708206509, now seen corresponding path program 1 times [2020-12-22 13:53:21,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:53:21,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424641834] [2020-12-22 13:53:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:53:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:53:22,471 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 13:53:22,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424641834] [2020-12-22 13:53:22,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:53:22,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 13:53:22,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350039537] [2020-12-22 13:53:22,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:53:22,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:53:22,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:53:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:53:22,476 INFO L87 Difference]: Start difference. First operand 26768 states and 38310 transitions. Second operand 6 states. [2020-12-22 13:53:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:53:25,550 INFO L93 Difference]: Finished difference Result 120142 states and 172012 transitions. [2020-12-22 13:53:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:53:25,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 13:53:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:53:25,830 INFO L225 Difference]: With dead ends: 120142 [2020-12-22 13:53:25,830 INFO L226 Difference]: Without dead ends: 93433 [2020-12-22 13:53:25,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:53:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93433 states. [2020-12-22 13:53:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93433 to 26772. [2020-12-22 13:53:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26772 states. [2020-12-22 13:53:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26772 states to 26772 states and 38314 transitions. [2020-12-22 13:53:27,515 INFO L78 Accepts]: Start accepts. Automaton has 26772 states and 38314 transitions. Word has length 85 [2020-12-22 13:53:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:53:27,516 INFO L481 AbstractCegarLoop]: Abstraction has 26772 states and 38314 transitions. [2020-12-22 13:53:27,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:53:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 26772 states and 38314 transitions. [2020-12-22 13:53:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 13:53:27,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:53:27,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:53:27,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:53:27,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:53:27,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:53:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash -593319977, now seen corresponding path program 1 times [2020-12-22 13:53:27,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:53:27,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581301259] [2020-12-22 13:53:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:53:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:53:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:53:28,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581301259] [2020-12-22 13:53:28,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:53:28,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:53:28,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554589130] [2020-12-22 13:53:28,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:53:28,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:53:28,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:53:28,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:53:28,253 INFO L87 Difference]: Start difference. First operand 26772 states and 38314 transitions. Second operand 4 states. [2020-12-22 13:53:29,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:53:29,831 INFO L93 Difference]: Finished difference Result 60216 states and 86174 transitions. [2020-12-22 13:53:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:53:29,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 13:53:29,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:53:29,890 INFO L225 Difference]: With dead ends: 60216 [2020-12-22 13:53:29,890 INFO L226 Difference]: Without dead ends: 33503 [2020-12-22 13:53:29,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:53:29,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33503 states. [2020-12-22 13:53:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33503 to 20132. [2020-12-22 13:53:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20132 states. [2020-12-22 13:53:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20132 states to 20132 states and 28796 transitions. [2020-12-22 13:53:30,976 INFO L78 Accepts]: Start accepts. Automaton has 20132 states and 28796 transitions. Word has length 105 [2020-12-22 13:53:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:53:30,977 INFO L481 AbstractCegarLoop]: Abstraction has 20132 states and 28796 transitions. [2020-12-22 13:53:30,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:53:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 20132 states and 28796 transitions. [2020-12-22 13:53:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 13:53:30,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:53:30,996 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:53:30,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:53:30,997 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:53:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:53:30,997 INFO L82 PathProgramCache]: Analyzing trace with hash 961569095, now seen corresponding path program 1 times [2020-12-22 13:53:30,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:53:30,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072874912] [2020-12-22 13:53:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:53:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:53:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:53:32,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072874912] [2020-12-22 13:53:32,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:53:32,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:53:32,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638873846] [2020-12-22 13:53:32,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:53:32,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:53:32,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:53:32,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:53:32,630 INFO L87 Difference]: Start difference. First operand 20132 states and 28796 transitions. Second operand 3 states. [2020-12-22 13:53:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:53:33,685 INFO L93 Difference]: Finished difference Result 40282 states and 57651 transitions. [2020-12-22 13:53:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:53:33,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-12-22 13:53:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:53:33,718 INFO L225 Difference]: With dead ends: 40282 [2020-12-22 13:53:33,719 INFO L226 Difference]: Without dead ends: 20174 [2020-12-22 13:53:33,741 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 13:53:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20174 states. [2020-12-22 13:53:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20174 to 20174. [2020-12-22 13:53:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20174 states. [2020-12-22 13:53:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20174 states to 20174 states and 28838 transitions. [2020-12-22 13:53:34,608 INFO L78 Accepts]: Start accepts. Automaton has 20174 states and 28838 transitions. Word has length 130 [2020-12-22 13:53:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:53:34,609 INFO L481 AbstractCegarLoop]: Abstraction has 20174 states and 28838 transitions. [2020-12-22 13:53:34,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:53:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 20174 states and 28838 transitions. [2020-12-22 13:53:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:53:34,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:53:34,633 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:53:34,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:53:34,634 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:53:34,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:53:34,635 INFO L82 PathProgramCache]: Analyzing trace with hash -275306605, now seen corresponding path program 1 times [2020-12-22 13:53:34,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:53:34,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484617656] [2020-12-22 13:53:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:53:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat