/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-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:02:16,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:02:16,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:02:16,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:02:16,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:02:16,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:02:16,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:02:16,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:02:16,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:02:16,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:02:16,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:02:16,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:02:16,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:02:16,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:02:16,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:02:16,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:02:16,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:02:16,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:02:16,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:02:16,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:02:16,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:02:16,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:02:16,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:02:16,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:02:16,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 15:02:16,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:02:16,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:02:16,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:02:16,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:02:16,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:02:16,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:02:16,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:02:16,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:02:16,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:02:16,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:02:16,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:02:16,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:02:16,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:02:16,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:02:16,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:02:16,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:02:16,969 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:02:16,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:02:16,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:02:16,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:02:16,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:02:16,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:02:16,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:02:16,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:02:16,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:02:16,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:02:16,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:02:16,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:02:16,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:02:16,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:02:16,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:02:16,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:02:16,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:02:16,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:02:16,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:02:16,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:02:16,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:02:16,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:02:17,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:02:17,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:02:17,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:02:17,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:02:17,409 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:02:17,410 INFO L432 ainManager$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-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2020-12-22 15:02:17,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41cdfa12f/61b9ef56196a46c8aa4858dde6ddd92d/FLAGe63c4278e [2020-12-22 15:02:18,651 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:02:18,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2020-12-22 15:02:18,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41cdfa12f/61b9ef56196a46c8aa4858dde6ddd92d/FLAGe63c4278e [2020-12-22 15:02:19,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41cdfa12f/61b9ef56196a46c8aa4858dde6ddd92d [2020-12-22 15:02:19,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:02:19,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:02:19,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:02:19,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:02:19,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:02:19,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:02:19" (1/1) ... [2020-12-22 15:02:19,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b27713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:19, skipping insertion in model container [2020-12-22 15:02:19,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:02:19" (1/1) ... [2020-12-22 15:02:19,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:02:19,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:02:21,768 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-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2020-12-22 15:02:21,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:02:22,001 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:02:22,537 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-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2020-12-22 15:02:22,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:02:22,951 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:02:22,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22 WrapperNode [2020-12-22 15:02:22,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:02:22,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:02:22,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:02:22,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:02:22,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:23,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:23,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:02:23,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:02:23,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:02:23,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:02:23,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:23,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:24,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:24,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:24,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:24,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:24,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (1/1) ... [2020-12-22 15:02:24,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:02:24,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:02:24,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:02:24,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:02:24,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (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 15:02:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:02:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:02:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:02:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:02:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2020-12-22 15:02:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2020-12-22 15:02:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:02:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:02:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:02:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:02:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:02:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:02:24,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:02:50,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:02:50,041 INFO L299 CfgBuilder]: Removed 4263 assume(true) statements. [2020-12-22 15:02:50,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:02:50 BoogieIcfgContainer [2020-12-22 15:02:50,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:02:50,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:02:50,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:02:50,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:02:50,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:02:19" (1/3) ... [2020-12-22 15:02:50,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3234d61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:02:50, skipping insertion in model container [2020-12-22 15:02:50,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:02:22" (2/3) ... [2020-12-22 15:02:50,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3234d61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:02:50, skipping insertion in model container [2020-12-22 15:02:50,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:02:50" (3/3) ... [2020-12-22 15:02:50,071 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2020-12-22 15:02:50,079 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:02:50,088 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 15:02:50,109 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 15:02:50,183 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:02:50,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:02:50,183 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:02:50,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:02:50,184 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:02:50,184 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:02:50,184 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:02:50,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:02:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states. [2020-12-22 15:02:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 15:02:50,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:02:50,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:02:50,326 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:02:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:02:50,334 INFO L82 PathProgramCache]: Analyzing trace with hash 119318621, now seen corresponding path program 1 times [2020-12-22 15:02:50,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:02:50,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741059114] [2020-12-22 15:02:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:02:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:02:51,371 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 15:02:51,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741059114] [2020-12-22 15:02:51,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:02:51,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:02:51,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133708503] [2020-12-22 15:02:51,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 15:02:51,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:02:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 15:02:51,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:02:51,397 INFO L87 Difference]: Start difference. First operand 3554 states. Second operand 2 states. [2020-12-22 15:02:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:51,624 INFO L93 Difference]: Finished difference Result 7104 states and 9277 transitions. [2020-12-22 15:02:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 15:02:51,626 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 98 [2020-12-22 15:02:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:51,668 INFO L225 Difference]: With dead ends: 7104 [2020-12-22 15:02:51,668 INFO L226 Difference]: Without dead ends: 3527 [2020-12-22 15:02:51,686 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 15:02:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2020-12-22 15:02:51,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3527. [2020-12-22 15:02:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2020-12-22 15:02:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4571 transitions. [2020-12-22 15:02:51,906 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4571 transitions. Word has length 98 [2020-12-22 15:02:51,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:02:51,906 INFO L481 AbstractCegarLoop]: Abstraction has 3527 states and 4571 transitions. [2020-12-22 15:02:51,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 15:02:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4571 transitions. [2020-12-22 15:02:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 15:02:51,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:02:51,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:02:51,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:02:51,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:02:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:02:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash 508941543, now seen corresponding path program 1 times [2020-12-22 15:02:51,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:02:51,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081298947] [2020-12-22 15:02:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:02:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:02:52,492 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 15:02:52,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081298947] [2020-12-22 15:02:52,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:02:52,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 15:02:52,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098595669] [2020-12-22 15:02:52,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:02:52,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:02:52,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:02:52,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:02:52,496 INFO L87 Difference]: Start difference. First operand 3527 states and 4571 transitions. Second operand 5 states. [2020-12-22 15:02:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:55,568 INFO L93 Difference]: Finished difference Result 16552 states and 21461 transitions. [2020-12-22 15:02:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:02:55,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 15:02:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:55,641 INFO L225 Difference]: With dead ends: 16552 [2020-12-22 15:02:55,641 INFO L226 Difference]: Without dead ends: 13055 [2020-12-22 15:02:55,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:02:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13055 states. [2020-12-22 15:02:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13055 to 13035. [2020-12-22 15:02:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13035 states. [2020-12-22 15:02:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13035 states to 13035 states and 16901 transitions. [2020-12-22 15:02:56,142 INFO L78 Accepts]: Start accepts. Automaton has 13035 states and 16901 transitions. Word has length 98 [2020-12-22 15:02:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:02:56,143 INFO L481 AbstractCegarLoop]: Abstraction has 13035 states and 16901 transitions. [2020-12-22 15:02:56,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:02:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13035 states and 16901 transitions. [2020-12-22 15:02:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 15:02:56,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:02:56,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:02:56,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:02:56,157 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:02:56,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:02:56,159 INFO L82 PathProgramCache]: Analyzing trace with hash -148529875, now seen corresponding path program 1 times [2020-12-22 15:02:56,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:02:56,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371074697] [2020-12-22 15:02:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:02:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:02:56,672 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 15:02:56,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371074697] [2020-12-22 15:02:56,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:02:56,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 15:02:56,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103127478] [2020-12-22 15:02:56,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:02:56,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:02:56,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:02:56,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:02:56,681 INFO L87 Difference]: Start difference. First operand 13035 states and 16901 transitions. Second operand 5 states. [2020-12-22 15:03:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:00,795 INFO L93 Difference]: Finished difference Result 61253 states and 79386 transitions. [2020-12-22 15:03:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:03:00,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 15:03:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:01,024 INFO L225 Difference]: With dead ends: 61253 [2020-12-22 15:03:01,025 INFO L226 Difference]: Without dead ends: 48248 [2020-12-22 15:03:01,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48248 states. [2020-12-22 15:03:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48248 to 48226. [2020-12-22 15:03:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48226 states. [2020-12-22 15:03:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48226 states to 48226 states and 62473 transitions. [2020-12-22 15:03:03,547 INFO L78 Accepts]: Start accepts. Automaton has 48226 states and 62473 transitions. Word has length 99 [2020-12-22 15:03:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:03,548 INFO L481 AbstractCegarLoop]: Abstraction has 48226 states and 62473 transitions. [2020-12-22 15:03:03,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:03:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 48226 states and 62473 transitions. [2020-12-22 15:03:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 15:03:03,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:03,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:03:03,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:03:03,562 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:03,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2099489588, now seen corresponding path program 1 times [2020-12-22 15:03:03,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:03,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681476986] [2020-12-22 15:03:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:04,235 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 15:03:04,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681476986] [2020-12-22 15:03:04,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:04,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 15:03:04,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341085922] [2020-12-22 15:03:04,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:03:04,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:04,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:03:04,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:04,240 INFO L87 Difference]: Start difference. First operand 48226 states and 62473 transitions. Second operand 5 states. [2020-12-22 15:03:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:11,580 INFO L93 Difference]: Finished difference Result 225868 states and 292378 transitions. [2020-12-22 15:03:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:03:11,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 15:03:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:12,265 INFO L225 Difference]: With dead ends: 225868 [2020-12-22 15:03:12,265 INFO L226 Difference]: Without dead ends: 177672 [2020-12-22 15:03:12,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177672 states. [2020-12-22 15:03:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177672 to 177646. [2020-12-22 15:03:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177646 states. [2020-12-22 15:03:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177646 states to 177646 states and 229815 transitions. [2020-12-22 15:03:18,951 INFO L78 Accepts]: Start accepts. Automaton has 177646 states and 229815 transitions. Word has length 100 [2020-12-22 15:03:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:18,954 INFO L481 AbstractCegarLoop]: Abstraction has 177646 states and 229815 transitions. [2020-12-22 15:03:18,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:03:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 177646 states and 229815 transitions. [2020-12-22 15:03:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 15:03:18,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:18,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:03:18,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:03:18,960 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash 943952852, now seen corresponding path program 1 times [2020-12-22 15:03:18,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:18,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41155818] [2020-12-22 15:03:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:19,706 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 15:03:19,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41155818] [2020-12-22 15:03:19,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:03:19,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 15:03:19,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664604610] [2020-12-22 15:03:19,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:03:19,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:19,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:03:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:19,709 INFO L87 Difference]: Start difference. First operand 177646 states and 229815 transitions. Second operand 5 states. [2020-12-22 15:03:37,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:03:37,566 INFO L93 Difference]: Finished difference Result 827624 states and 1069648 transitions. [2020-12-22 15:03:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:03:37,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-12-22 15:03:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:03:39,834 INFO L225 Difference]: With dead ends: 827624 [2020-12-22 15:03:39,834 INFO L226 Difference]: Without dead ends: 650008 [2020-12-22 15:03:40,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:03:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650008 states. [2020-12-22 15:03:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650008 to 649974. [2020-12-22 15:03:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649974 states. [2020-12-22 15:04:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649974 states to 649974 states and 839461 transitions. [2020-12-22 15:04:00,920 INFO L78 Accepts]: Start accepts. Automaton has 649974 states and 839461 transitions. Word has length 101 [2020-12-22 15:04:00,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:04:00,935 INFO L481 AbstractCegarLoop]: Abstraction has 649974 states and 839461 transitions. [2020-12-22 15:04:00,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:04:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 649974 states and 839461 transitions. [2020-12-22 15:04:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-22 15:04:01,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:04:01,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:01,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:04:01,096 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:04:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:04:01,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2057070765, now seen corresponding path program 1 times [2020-12-22 15:04:01,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:04:01,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20090523] [2020-12-22 15:04:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:04:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:04:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-12-22 15:04:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:04:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:04:01,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20090523] [2020-12-22 15:04:01,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:04:01,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:04:01,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216691636] [2020-12-22 15:04:01,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:04:01,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:04:01,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:04:01,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:04:01,583 INFO L87 Difference]: Start difference. First operand 649974 states and 839461 transitions. Second operand 4 states. [2020-12-22 15:04:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:04:46,551 INFO L93 Difference]: Finished difference Result 1603542 states and 2079871 transitions. [2020-12-22 15:04:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:04:46,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-12-22 15:04:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:04:50,751 INFO L225 Difference]: With dead ends: 1603542 [2020-12-22 15:04:50,751 INFO L226 Difference]: Without dead ends: 953598 [2020-12-22 15:04:52,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 15:04:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953598 states.