/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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:53:32,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:53:32,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:53:32,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:53:32,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:53:32,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:53:32,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:53:32,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:53:32,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:53:32,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:53:32,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:53:32,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:53:32,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:53:32,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:53:32,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:53:32,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:53:32,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:53:32,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:53:32,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:53:32,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:53:32,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:53:32,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:53:32,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:53:32,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:53:32,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:53:32,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:53:32,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:53:32,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:53:32,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:53:32,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:53:32,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:53:32,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:53:32,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:53:32,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:53:32,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:53:32,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:53:32,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:53:32,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:53:32,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:53:32,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:53:32,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:53:32,486 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:53:32,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:53:32,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:53:32,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:53:32,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:53:32,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:53:32,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:53:32,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:53:32,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:53:32,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:53:32,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:53:32,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:53:32,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:53:32,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:53:32,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:53:32,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:53:32,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:53:32,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:53:32,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:53:32,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:53:32,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:53:32,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:53:32,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:53:32,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:53:32,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:53:32,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:53:32,934 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:53:32,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2020-12-22 13:53:33,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d012b37a/a77ea7920132494e914df1b21509632f/FLAG334000b9a [2020-12-22 13:53:34,153 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:53:34,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2020-12-22 13:53:34,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d012b37a/a77ea7920132494e914df1b21509632f/FLAG334000b9a [2020-12-22 13:53:34,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d012b37a/a77ea7920132494e914df1b21509632f [2020-12-22 13:53:34,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:53:34,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:53:34,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:53:34,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:53:34,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:53:34,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:53:34" (1/1) ... [2020-12-22 13:53:34,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1e147d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:34, skipping insertion in model container [2020-12-22 13:53:34,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:53:34" (1/1) ... [2020-12-22 13:53:34,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:53:34,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:53:36,235 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2020-12-22 13:53:36,274 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:53:36,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:53:36,329 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:53:36,854 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2020-12-22 13:53:36,869 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 13:53:36,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:53:37,102 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:53:37,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37 WrapperNode [2020-12-22 13:53:37,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:53:37,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:53:37,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:53:37,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:53:37,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:37,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:37,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:53:37,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:53:37,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:53:37,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:53:37,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:37,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:37,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:37,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:38,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:38,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:38,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (1/1) ... [2020-12-22 13:53:38,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:53:38,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:53:38,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:53:38,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:53:38,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (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 13:53:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:53:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:53:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:53:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:53:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:53:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:53:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:53:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:53:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:53:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:53:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:53:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2020-12-22 13:53:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:53:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:53:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:53:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:53:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:53:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:54:28,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:54:28,855 INFO L299 CfgBuilder]: Removed 1124 assume(true) statements. [2020-12-22 13:54:28,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:54:28 BoogieIcfgContainer [2020-12-22 13:54:28,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:54:28,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:54:28,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:54:28,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:54:28,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:53:34" (1/3) ... [2020-12-22 13:54:28,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c15ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:54:28, skipping insertion in model container [2020-12-22 13:54:28,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:37" (2/3) ... [2020-12-22 13:54:28,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c15ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:54:28, skipping insertion in model container [2020-12-22 13:54:28,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:54:28" (3/3) ... [2020-12-22 13:54:28,873 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2020-12-22 13:54:28,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:54:28,887 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 13:54:28,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 13:54:28,944 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:54:28,944 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:54:28,944 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:54:28,944 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:54:28,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:54:28,945 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:54:28,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:54:28,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:54:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states. [2020-12-22 13:54:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:54:29,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:29,001 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] [2020-12-22 13:54:29,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:29,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1301306874, now seen corresponding path program 1 times [2020-12-22 13:54:29,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:29,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003286261] [2020-12-22 13:54:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:29,630 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 13:54:29,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003286261] [2020-12-22 13:54:29,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:29,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:54:29,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034445073] [2020-12-22 13:54:29,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:54:29,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:29,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:54:29,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:54:29,663 INFO L87 Difference]: Start difference. First operand 1596 states. Second operand 2 states. [2020-12-22 13:54:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:54:29,796 INFO L93 Difference]: Finished difference Result 3188 states and 4813 transitions. [2020-12-22 13:54:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:54:29,798 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-12-22 13:54:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:54:29,848 INFO L225 Difference]: With dead ends: 3188 [2020-12-22 13:54:29,848 INFO L226 Difference]: Without dead ends: 1583 [2020-12-22 13:54:29,864 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 13:54:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-12-22 13:54:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2020-12-22 13:54:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-12-22 13:54:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2347 transitions. [2020-12-22 13:54:30,020 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2347 transitions. Word has length 42 [2020-12-22 13:54:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:54:30,020 INFO L481 AbstractCegarLoop]: Abstraction has 1583 states and 2347 transitions. [2020-12-22 13:54:30,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:54:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2347 transitions. [2020-12-22 13:54:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:54:30,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:30,024 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] [2020-12-22 13:54:30,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:54:30,025 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:30,027 INFO L82 PathProgramCache]: Analyzing trace with hash -568676220, now seen corresponding path program 1 times [2020-12-22 13:54:30,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:30,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925252195] [2020-12-22 13:54:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:30,334 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 13:54:30,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925252195] [2020-12-22 13:54:30,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:30,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:54:30,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363742634] [2020-12-22 13:54:30,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:54:30,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:30,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:54:30,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:54:30,339 INFO L87 Difference]: Start difference. First operand 1583 states and 2347 transitions. Second operand 3 states. [2020-12-22 13:54:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:54:30,573 INFO L93 Difference]: Finished difference Result 4676 states and 6964 transitions. [2020-12-22 13:54:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:54:30,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 13:54:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:54:30,593 INFO L225 Difference]: With dead ends: 4676 [2020-12-22 13:54:30,593 INFO L226 Difference]: Without dead ends: 3126 [2020-12-22 13:54:30,598 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 13:54:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-12-22 13:54:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3116. [2020-12-22 13:54:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3116 states. [2020-12-22 13:54:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4644 transitions. [2020-12-22 13:54:30,698 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4644 transitions. Word has length 42 [2020-12-22 13:54:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:54:30,698 INFO L481 AbstractCegarLoop]: Abstraction has 3116 states and 4644 transitions. [2020-12-22 13:54:30,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:54:30,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4644 transitions. [2020-12-22 13:54:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 13:54:30,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:30,710 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] [2020-12-22 13:54:30,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:54:30,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:30,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1340666122, now seen corresponding path program 1 times [2020-12-22 13:54:30,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:30,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844231503] [2020-12-22 13:54:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:30,985 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 13:54:30,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844231503] [2020-12-22 13:54:30,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:30,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:54:30,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244157135] [2020-12-22 13:54:30,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:54:30,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:30,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:54:31,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:54:31,002 INFO L87 Difference]: Start difference. First operand 3116 states and 4644 transitions. Second operand 4 states. [2020-12-22 13:54:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:54:31,267 INFO L93 Difference]: Finished difference Result 6208 states and 9256 transitions. [2020-12-22 13:54:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:54:31,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 13:54:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:54:31,287 INFO L225 Difference]: With dead ends: 6208 [2020-12-22 13:54:31,287 INFO L226 Difference]: Without dead ends: 3125 [2020-12-22 13:54:31,296 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 13:54:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-12-22 13:54:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3115. [2020-12-22 13:54:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3115 states. [2020-12-22 13:54:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 4640 transitions. [2020-12-22 13:54:31,415 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 4640 transitions. Word has length 46 [2020-12-22 13:54:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:54:31,416 INFO L481 AbstractCegarLoop]: Abstraction has 3115 states and 4640 transitions. [2020-12-22 13:54:31,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:54:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 4640 transitions. [2020-12-22 13:54:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 13:54:31,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:31,418 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] [2020-12-22 13:54:31,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:54:31,419 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1163448145, now seen corresponding path program 1 times [2020-12-22 13:54:31,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:31,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380434892] [2020-12-22 13:54:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:31,686 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 13:54:31,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380434892] [2020-12-22 13:54:31,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:31,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:54:31,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567635206] [2020-12-22 13:54:31,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:54:31,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:31,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:54:31,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:54:31,691 INFO L87 Difference]: Start difference. First operand 3115 states and 4640 transitions. Second operand 3 states. [2020-12-22 13:54:31,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:54:31,853 INFO L93 Difference]: Finished difference Result 5883 states and 8808 transitions. [2020-12-22 13:54:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:54:31,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-22 13:54:31,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:54:31,871 INFO L225 Difference]: With dead ends: 5883 [2020-12-22 13:54:31,871 INFO L226 Difference]: Without dead ends: 2801 [2020-12-22 13:54:31,877 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 13:54:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2020-12-22 13:54:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2801. [2020-12-22 13:54:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-12-22 13:54:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 4201 transitions. [2020-12-22 13:54:32,009 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 4201 transitions. Word has length 49 [2020-12-22 13:54:32,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:54:32,010 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 4201 transitions. [2020-12-22 13:54:32,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:54:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 4201 transitions. [2020-12-22 13:54:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 13:54:32,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:32,014 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] [2020-12-22 13:54:32,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:54:32,015 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:32,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:32,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1670408081, now seen corresponding path program 1 times [2020-12-22 13:54:32,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:32,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857382365] [2020-12-22 13:54:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:32,237 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 13:54:32,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857382365] [2020-12-22 13:54:32,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:32,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:54:32,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529570987] [2020-12-22 13:54:32,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:54:32,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:32,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:54:32,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:54:32,240 INFO L87 Difference]: Start difference. First operand 2801 states and 4201 transitions. Second operand 3 states. [2020-12-22 13:54:32,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:54:32,496 INFO L93 Difference]: Finished difference Result 8327 states and 12524 transitions. [2020-12-22 13:54:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:54:32,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 13:54:32,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:54:32,529 INFO L225 Difference]: With dead ends: 8327 [2020-12-22 13:54:32,530 INFO L226 Difference]: Without dead ends: 5557 [2020-12-22 13:54:32,537 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 13:54:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2020-12-22 13:54:32,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5545. [2020-12-22 13:54:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5545 states. [2020-12-22 13:54:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 8339 transitions. [2020-12-22 13:54:32,887 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 8339 transitions. Word has length 53 [2020-12-22 13:54:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:54:32,889 INFO L481 AbstractCegarLoop]: Abstraction has 5545 states and 8339 transitions. [2020-12-22 13:54:32,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:54:32,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 8339 transitions. [2020-12-22 13:54:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 13:54:32,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:32,893 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] [2020-12-22 13:54:32,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:54:32,893 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1632205903, now seen corresponding path program 1 times [2020-12-22 13:54:32,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:32,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203186710] [2020-12-22 13:54:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:33,083 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 13:54:33,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203186710] [2020-12-22 13:54:33,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:33,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:54:33,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224362931] [2020-12-22 13:54:33,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:54:33,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:54:33,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:54:33,086 INFO L87 Difference]: Start difference. First operand 5545 states and 8339 transitions. Second operand 3 states. [2020-12-22 13:54:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:54:33,298 INFO L93 Difference]: Finished difference Result 9907 states and 14908 transitions. [2020-12-22 13:54:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:54:33,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 13:54:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:54:33,323 INFO L225 Difference]: With dead ends: 9907 [2020-12-22 13:54:33,325 INFO L226 Difference]: Without dead ends: 4395 [2020-12-22 13:54:33,339 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 13:54:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2020-12-22 13:54:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 4385. [2020-12-22 13:54:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4385 states. [2020-12-22 13:54:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 6592 transitions. [2020-12-22 13:54:33,524 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 6592 transitions. Word has length 63 [2020-12-22 13:54:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:54:33,527 INFO L481 AbstractCegarLoop]: Abstraction has 4385 states and 6592 transitions. [2020-12-22 13:54:33,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:54:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 6592 transitions. [2020-12-22 13:54:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 13:54:33,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:33,530 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:54:33,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:54:33,530 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:33,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:33,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1272537246, now seen corresponding path program 1 times [2020-12-22 13:54:33,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:33,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506180438] [2020-12-22 13:54:33,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:54:33,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506180438] [2020-12-22 13:54:33,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:33,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:54:33,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013500604] [2020-12-22 13:54:33,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:54:33,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:33,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:54:33,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:54:33,820 INFO L87 Difference]: Start difference. First operand 4385 states and 6592 transitions. Second operand 4 states. [2020-12-22 13:54:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:54:52,308 INFO L93 Difference]: Finished difference Result 8271 states and 12431 transitions. [2020-12-22 13:54:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:54:52,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 13:54:52,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:54:52,336 INFO L225 Difference]: With dead ends: 8271 [2020-12-22 13:54:52,336 INFO L226 Difference]: Without dead ends: 4447 [2020-12-22 13:54:52,345 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 13:54:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2020-12-22 13:54:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 4389. [2020-12-22 13:54:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2020-12-22 13:54:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 6596 transitions. [2020-12-22 13:54:52,502 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 6596 transitions. Word has length 74 [2020-12-22 13:54:52,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:54:52,503 INFO L481 AbstractCegarLoop]: Abstraction has 4389 states and 6596 transitions. [2020-12-22 13:54:52,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:54:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 6596 transitions. [2020-12-22 13:54:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 13:54:52,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:54:52,507 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:54:52,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:54:52,507 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:54:52,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:54:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash 510540193, now seen corresponding path program 1 times [2020-12-22 13:54:52,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:54:52,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090241757] [2020-12-22 13:54:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:54:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:54:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:54:52,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090241757] [2020-12-22 13:54:52,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:54:52,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 13:54:52,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886859501] [2020-12-22 13:54:52,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:54:52,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:54:52,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:54:52,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:54:52,843 INFO L87 Difference]: Start difference. First operand 4389 states and 6596 transitions. Second operand 6 states. [2020-12-22 13:55:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:55:27,227 INFO L93 Difference]: Finished difference Result 18133 states and 27294 transitions. [2020-12-22 13:55:27,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 13:55:27,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 13:55:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:55:27,270 INFO L225 Difference]: With dead ends: 18133 [2020-12-22 13:55:27,270 INFO L226 Difference]: Without dead ends: 14305 [2020-12-22 13:55:27,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:55:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14305 states. [2020-12-22 13:55:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14305 to 4393. [2020-12-22 13:55:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4393 states. [2020-12-22 13:55:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6600 transitions. [2020-12-22 13:55:27,542 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6600 transitions. Word has length 77 [2020-12-22 13:55:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:55:27,542 INFO L481 AbstractCegarLoop]: Abstraction has 4393 states and 6600 transitions. [2020-12-22 13:55:27,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:55:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6600 transitions. [2020-12-22 13:55:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 13:55:27,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:55:27,546 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:55:27,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:55:27,546 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:55:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:55:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash -337844584, now seen corresponding path program 1 times [2020-12-22 13:55:27,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:55:27,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705407819] [2020-12-22 13:55:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:55:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:55:27,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705407819] [2020-12-22 13:55:27,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:55:27,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:55:27,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131490649] [2020-12-22 13:55:27,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:55:27,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:55:27,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:55:27,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:55:27,864 INFO L87 Difference]: Start difference. First operand 4393 states and 6600 transitions. Second operand 5 states. [2020-12-22 13:55:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:55:30,256 INFO L93 Difference]: Finished difference Result 27029 states and 40638 transitions. [2020-12-22 13:55:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:55:30,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-22 13:55:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:55:30,314 INFO L225 Difference]: With dead ends: 27029 [2020-12-22 13:55:30,314 INFO L226 Difference]: Without dead ends: 23197 [2020-12-22 13:55:30,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:55:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2020-12-22 13:55:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 4399. [2020-12-22 13:55:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4399 states. [2020-12-22 13:55:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6606 transitions. [2020-12-22 13:55:30,699 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6606 transitions. Word has length 77 [2020-12-22 13:55:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:55:30,699 INFO L481 AbstractCegarLoop]: Abstraction has 4399 states and 6606 transitions. [2020-12-22 13:55:30,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:55:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6606 transitions. [2020-12-22 13:55:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:55:30,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:55:30,703 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:55:30,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:55:30,703 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:55:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:55:30,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1910819619, now seen corresponding path program 1 times [2020-12-22 13:55:30,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:55:30,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598808261] [2020-12-22 13:55:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:55:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:55:30,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598808261] [2020-12-22 13:55:30,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:55:30,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:55:30,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576567435] [2020-12-22 13:55:30,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:55:30,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:55:30,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:55:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:55:30,946 INFO L87 Difference]: Start difference. First operand 4399 states and 6606 transitions. Second operand 3 states. [2020-12-22 13:55:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:55:31,514 INFO L93 Difference]: Finished difference Result 8807 states and 13257 transitions. [2020-12-22 13:55:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:55:31,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 13:55:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:55:31,527 INFO L225 Difference]: With dead ends: 8807 [2020-12-22 13:55:31,528 INFO L226 Difference]: Without dead ends: 4436 [2020-12-22 13:55:31,536 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 13:55:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2020-12-22 13:55:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4436. [2020-12-22 13:55:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4436 states. [2020-12-22 13:55:31,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 6643 transitions. [2020-12-22 13:55:31,775 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 6643 transitions. Word has length 79 [2020-12-22 13:55:31,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:55:31,775 INFO L481 AbstractCegarLoop]: Abstraction has 4436 states and 6643 transitions. [2020-12-22 13:55:31,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:55:31,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 6643 transitions. [2020-12-22 13:55:31,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 13:55:31,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:55:31,778 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:55:31,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:55:31,779 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:55:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:55:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2022075563, now seen corresponding path program 1 times [2020-12-22 13:55:31,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:55:31,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142151323] [2020-12-22 13:55:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:55:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:55:32,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142151323] [2020-12-22 13:55:32,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946502462] [2020-12-22 13:55:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:55:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:33,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 13:55:33,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:55:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:55:33,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:55:33,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:55:33,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8972273] [2020-12-22 13:55:33,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:55:33,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:55:33,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:55:33,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:55:33,256 INFO L87 Difference]: Start difference. First operand 4436 states and 6643 transitions. Second operand 6 states. [2020-12-22 13:55:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:55:34,340 INFO L93 Difference]: Finished difference Result 8880 states and 13330 transitions. [2020-12-22 13:55:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:55:34,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 13:55:34,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:55:34,352 INFO L225 Difference]: With dead ends: 8880 [2020-12-22 13:55:34,353 INFO L226 Difference]: Without dead ends: 4473 [2020-12-22 13:55:34,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:55:34,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2020-12-22 13:55:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4473. [2020-12-22 13:55:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4473 states. [2020-12-22 13:55:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 6680 transitions. [2020-12-22 13:55:34,637 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 6680 transitions. Word has length 80 [2020-12-22 13:55:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:55:34,638 INFO L481 AbstractCegarLoop]: Abstraction has 4473 states and 6680 transitions. [2020-12-22 13:55:34,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:55:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 6680 transitions. [2020-12-22 13:55:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 13:55:34,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:55:34,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:55:34,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 13:55:34,857 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:55:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:55:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1176042531, now seen corresponding path program 2 times [2020-12-22 13:55:34,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:55:34,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287527877] [2020-12-22 13:55:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:55:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:55:35,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287527877] [2020-12-22 13:55:35,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711197691] [2020-12-22 13:55:35,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:55:36,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:55:36,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:55:36,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 13:55:36,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:55:36,578 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 13:55:36,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:55:36,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 13:55:36,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109626184] [2020-12-22 13:55:36,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:55:36,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:55:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:55:36,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:55:36,581 INFO L87 Difference]: Start difference. First operand 4473 states and 6680 transitions. Second operand 3 states. [2020-12-22 13:55:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:55:37,151 INFO L93 Difference]: Finished difference Result 8914 states and 13327 transitions. [2020-12-22 13:55:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:55:37,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 13:55:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:55:37,163 INFO L225 Difference]: With dead ends: 8914 [2020-12-22 13:55:37,164 INFO L226 Difference]: Without dead ends: 4474 [2020-12-22 13:55:37,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:55:37,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2020-12-22 13:55:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4474. [2020-12-22 13:55:37,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4474 states. [2020-12-22 13:55:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 6681 transitions. [2020-12-22 13:55:37,438 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 6681 transitions. Word has length 81 [2020-12-22 13:55:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:55:37,439 INFO L481 AbstractCegarLoop]: Abstraction has 4474 states and 6681 transitions. [2020-12-22 13:55:37,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:55:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 6681 transitions. [2020-12-22 13:55:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 13:55:37,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:55:37,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:55:37,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 13:55:37,657 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:55:37,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:55:37,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1727328237, now seen corresponding path program 1 times [2020-12-22 13:55:37,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:55:37,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453858359] [2020-12-22 13:55:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:55:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:55:38,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453858359] [2020-12-22 13:55:38,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45988736] [2020-12-22 13:55:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:55:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:39,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 13:55:39,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:55:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:55:39,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:55:39,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 13:55:39,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732613378] [2020-12-22 13:55:39,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:55:39,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:55:39,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:55:39,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:55:39,212 INFO L87 Difference]: Start difference. First operand 4474 states and 6681 transitions. Second operand 7 states. [2020-12-22 13:55:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:55:40,076 INFO L93 Difference]: Finished difference Result 8957 states and 13409 transitions. [2020-12-22 13:55:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:55:40,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 13:55:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:55:40,090 INFO L225 Difference]: With dead ends: 8957 [2020-12-22 13:55:40,090 INFO L226 Difference]: Without dead ends: 4513 [2020-12-22 13:55:40,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:55:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2020-12-22 13:55:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4513. [2020-12-22 13:55:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4513 states. [2020-12-22 13:55:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 6720 transitions. [2020-12-22 13:55:40,356 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 6720 transitions. Word has length 82 [2020-12-22 13:55:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:55:40,357 INFO L481 AbstractCegarLoop]: Abstraction has 4513 states and 6720 transitions. [2020-12-22 13:55:40,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:55:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 6720 transitions. [2020-12-22 13:55:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:55:40,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:55:40,360 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:55:40,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 13:55:40,574 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:55:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:55:40,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1370806685, now seen corresponding path program 2 times [2020-12-22 13:55:40,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:55:40,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709260153] [2020-12-22 13:55:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:55:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:55:41,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709260153] [2020-12-22 13:55:41,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823617593] [2020-12-22 13:55:41,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:55:43,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:55:43,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:55:43,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 13:55:43,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:55:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:55:43,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:55:43,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-22 13:55:43,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877075281] [2020-12-22 13:55:43,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 13:55:43,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:55:43,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 13:55:43,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:55:43,595 INFO L87 Difference]: Start difference. First operand 4513 states and 6720 transitions. Second operand 12 states. [2020-12-22 13:55:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:55:45,076 INFO L93 Difference]: Finished difference Result 9067 states and 13553 transitions. [2020-12-22 13:55:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 13:55:45,077 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-12-22 13:55:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:55:45,093 INFO L225 Difference]: With dead ends: 9067 [2020-12-22 13:55:45,093 INFO L226 Difference]: Without dead ends: 4586 [2020-12-22 13:55:45,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:55:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2020-12-22 13:55:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4586. [2020-12-22 13:55:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4586 states. [2020-12-22 13:55:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4586 states to 4586 states and 6793 transitions. [2020-12-22 13:55:45,383 INFO L78 Accepts]: Start accepts. Automaton has 4586 states and 6793 transitions. Word has length 85 [2020-12-22 13:55:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:55:45,384 INFO L481 AbstractCegarLoop]: Abstraction has 4586 states and 6793 transitions. [2020-12-22 13:55:45,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 13:55:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4586 states and 6793 transitions. [2020-12-22 13:55:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 13:55:45,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:55:45,390 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-12-22 13:55:45,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:55:45,605 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:55:45,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:55:45,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1572831723, now seen corresponding path program 3 times [2020-12-22 13:55:45,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:55:45,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56145319] [2020-12-22 13:55:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:55:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:55:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:55:46,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56145319] [2020-12-22 13:55:46,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551539944] [2020-12-22 13:55:46,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:55:48,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:55:48,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:55:48,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 13:55:48,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:55:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:55:48,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:55:48,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-12-22 13:55:48,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736640826] [2020-12-22 13:55:48,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 13:55:48,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:55:48,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 13:55:48,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:55:48,551 INFO L87 Difference]: Start difference. First operand 4586 states and 6793 transitions. Second operand 11 states. [2020-12-22 13:56:14,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:56:14,416 INFO L93 Difference]: Finished difference Result 9177 states and 13628 transitions. [2020-12-22 13:56:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:56:14,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-12-22 13:56:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:56:14,427 INFO L225 Difference]: With dead ends: 9177 [2020-12-22 13:56:14,427 INFO L226 Difference]: Without dead ends: 4624 [2020-12-22 13:56:14,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:56:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2020-12-22 13:56:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4624. [2020-12-22 13:56:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4624 states. [2020-12-22 13:56:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 6831 transitions. [2020-12-22 13:56:14,744 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 6831 transitions. Word has length 86 [2020-12-22 13:56:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:56:14,744 INFO L481 AbstractCegarLoop]: Abstraction has 4624 states and 6831 transitions. [2020-12-22 13:56:14,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 13:56:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 6831 transitions. [2020-12-22 13:56:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 13:56:14,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:56:14,751 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 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] [2020-12-22 13:56:14,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 13:56:14,967 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:56:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:56:14,968 INFO L82 PathProgramCache]: Analyzing trace with hash 404046675, now seen corresponding path program 4 times [2020-12-22 13:56:14,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:56:14,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795578675] [2020-12-22 13:56:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:56:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:56:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:56:15,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795578675] [2020-12-22 13:56:15,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685963130] [2020-12-22 13:56:15,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:56:16,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 13:56:16,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:56:16,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 13:56:16,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:56:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:56:17,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:56:17,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 13:56:17,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516560768] [2020-12-22 13:56:17,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 13:56:17,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:56:17,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 13:56:17,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:56:17,255 INFO L87 Difference]: Start difference. First operand 4624 states and 6831 transitions. Second operand 16 states. [2020-12-22 13:57:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:57:20,938 INFO L93 Difference]: Finished difference Result 9251 states and 13701 transitions. [2020-12-22 13:57:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 13:57:20,939 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-12-22 13:57:20,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:57:20,946 INFO L225 Difference]: With dead ends: 9251 [2020-12-22 13:57:20,946 INFO L226 Difference]: Without dead ends: 4661 [2020-12-22 13:57:20,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 13:57:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2020-12-22 13:57:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4661. [2020-12-22 13:57:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4661 states. [2020-12-22 13:57:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 6868 transitions. [2020-12-22 13:57:21,323 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 6868 transitions. Word has length 88 [2020-12-22 13:57:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:57:21,324 INFO L481 AbstractCegarLoop]: Abstraction has 4661 states and 6868 transitions. [2020-12-22 13:57:21,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 13:57:21,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 6868 transitions. [2020-12-22 13:57:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 13:57:21,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:57:21,328 INFO L422 BasicCegarLoop]: trace histogram [7, 3, 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] [2020-12-22 13:57:21,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:57:21,543 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:57:21,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:57:21,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1114483675, now seen corresponding path program 5 times [2020-12-22 13:57:21,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:57:21,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162960606] [2020-12-22 13:57:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:57:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:57:22,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162960606] [2020-12-22 13:57:22,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018445226] [2020-12-22 13:57:22,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:57:23,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 13:57:23,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:57:23,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1970 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 13:57:23,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:57:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:57:24,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:57:24,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-22 13:57:24,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091012156] [2020-12-22 13:57:24,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 13:57:24,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:57:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 13:57:24,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:57:24,510 INFO L87 Difference]: Start difference. First operand 4661 states and 6868 transitions. Second operand 18 states.