/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:28:13,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:28:13,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:28:13,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:28:13,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:28:13,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:28:13,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:28:13,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:28:13,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:28:13,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:28:13,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:28:13,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:28:13,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:28:13,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:28:13,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:28:13,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:28:13,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:28:13,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:28:13,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:28:13,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:28:13,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:28:13,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:28:13,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:28:13,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:28:13,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:28:13,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:28:13,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:28:13,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:28:13,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:28:13,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:28:13,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:28:13,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:28:13,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:28:13,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:28:13,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:28:13,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:28:13,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:28:13,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:28:13,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:28:13,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:28:13,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:28:13,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:28:13,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:28:13,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:28:13,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:28:13,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:28:13,965 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:28:13,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:28:13,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:28:13,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:28:13,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:28:13,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:28:13,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:28:13,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:28:13,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:28:13,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:28:13,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:28:13,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:28:13,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:28:13,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:28:13,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:28:13,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:28:13,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:28:13,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:28:13,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:28:13,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:28:13,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:28:13,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:28:14,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:28:14,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:28:14,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:28:14,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:28:14,431 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:28:14,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i [2020-12-22 15:28:14,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff11b60b/70b692dd2ae44e95a40fd41290c92b14/FLAG63e103cda [2020-12-22 15:28:15,756 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:28:15,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i [2020-12-22 15:28:15,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff11b60b/70b692dd2ae44e95a40fd41290c92b14/FLAG63e103cda [2020-12-22 15:28:16,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff11b60b/70b692dd2ae44e95a40fd41290c92b14 [2020-12-22 15:28:16,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:28:16,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:28:16,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:28:16,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:28:16,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:28:16,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:16,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29dc2a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:16, skipping insertion in model container [2020-12-22 15:28:16,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:28:16" (1/1) ... [2020-12-22 15:28:16,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:28:16,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:28:19,608 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320486,320499] [2020-12-22 15:28:19,611 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320631,320644] [2020-12-22 15:28:19,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:28:19,770 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:28:20,165 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320486,320499] [2020-12-22 15:28:20,165 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i[320631,320644] [2020-12-22 15:28:20,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:28:21,127 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:28:21,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21 WrapperNode [2020-12-22 15:28:21,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:28:21,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:28:21,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:28:21,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:28:21,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:21,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:21,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:28:21,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:28:21,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:28:21,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:28:21,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:21,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:21,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:21,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:22,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:22,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:22,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (1/1) ... [2020-12-22 15:28:22,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:28:22,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:28:22,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:28:22,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:28:22,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (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 15:28:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:28:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:28:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:28:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:28:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:28:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:28:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:28:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:28:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:28:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:28:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:28:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:28:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:28:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:28:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:28:42,825 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 15:28:42,825 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 15:28:42,826 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 15:28:42,827 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 15:28:42,828 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 15:28:42,829 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 15:28:42,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:28:42,878 INFO L299 CfgBuilder]: Removed 3782 assume(true) statements. [2020-12-22 15:28:42,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:28:42 BoogieIcfgContainer [2020-12-22 15:28:42,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:28:42,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:28:42,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:28:42,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:28:42,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:28:16" (1/3) ... [2020-12-22 15:28:42,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dc141a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:28:42, skipping insertion in model container [2020-12-22 15:28:42,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:28:21" (2/3) ... [2020-12-22 15:28:42,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dc141a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:28:42, skipping insertion in model container [2020-12-22 15:28:42,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:28:42" (3/3) ... [2020-12-22 15:28:42,894 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-fealnx.cil.i [2020-12-22 15:28:42,902 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:28:42,923 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 15:28:42,945 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 15:28:42,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:28:42,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:28:42,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:28:42,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:28:42,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:28:42,991 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:28:42,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:28:42,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:28:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states. [2020-12-22 15:28:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 15:28:43,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:43,084 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] [2020-12-22 15:28:43,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:43,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1143337837, now seen corresponding path program 1 times [2020-12-22 15:28:43,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:43,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864512655] [2020-12-22 15:28:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:43,984 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 15:28:43,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864512655] [2020-12-22 15:28:43,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:43,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:43,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211962336] [2020-12-22 15:28:43,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:43,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:44,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:44,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:44,012 INFO L87 Difference]: Start difference. First operand 3583 states. Second operand 3 states. [2020-12-22 15:28:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:46,665 INFO L93 Difference]: Finished difference Result 9911 states and 13262 transitions. [2020-12-22 15:28:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:46,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 15:28:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:46,739 INFO L225 Difference]: With dead ends: 9911 [2020-12-22 15:28:46,739 INFO L226 Difference]: Without dead ends: 6078 [2020-12-22 15:28:46,761 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 15:28:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2020-12-22 15:28:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 5897. [2020-12-22 15:28:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5897 states. [2020-12-22 15:28:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 7731 transitions. [2020-12-22 15:28:47,101 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 7731 transitions. Word has length 62 [2020-12-22 15:28:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:47,104 INFO L481 AbstractCegarLoop]: Abstraction has 5897 states and 7731 transitions. [2020-12-22 15:28:47,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 7731 transitions. [2020-12-22 15:28:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 15:28:47,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:47,114 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] [2020-12-22 15:28:47,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:28:47,114 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:47,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1561654553, now seen corresponding path program 1 times [2020-12-22 15:28:47,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:47,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299692184] [2020-12-22 15:28:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:47,477 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 15:28:47,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299692184] [2020-12-22 15:28:47,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:47,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:47,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807289024] [2020-12-22 15:28:47,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:47,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:47,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:47,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:47,482 INFO L87 Difference]: Start difference. First operand 5897 states and 7731 transitions. Second operand 3 states. [2020-12-22 15:28:50,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:50,244 INFO L93 Difference]: Finished difference Result 16499 states and 21609 transitions. [2020-12-22 15:28:50,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:50,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 15:28:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:50,307 INFO L225 Difference]: With dead ends: 16499 [2020-12-22 15:28:50,307 INFO L226 Difference]: Without dead ends: 10678 [2020-12-22 15:28:50,325 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 15:28:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2020-12-22 15:28:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 10432. [2020-12-22 15:28:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10432 states. [2020-12-22 15:28:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 13682 transitions. [2020-12-22 15:28:50,723 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 13682 transitions. Word has length 68 [2020-12-22 15:28:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:50,724 INFO L481 AbstractCegarLoop]: Abstraction has 10432 states and 13682 transitions. [2020-12-22 15:28:50,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 13682 transitions. [2020-12-22 15:28:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 15:28:50,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:50,729 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] [2020-12-22 15:28:50,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:28:50,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:50,733 INFO L82 PathProgramCache]: Analyzing trace with hash 228350482, now seen corresponding path program 1 times [2020-12-22 15:28:50,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:50,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340971298] [2020-12-22 15:28:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:51,057 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 15:28:51,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340971298] [2020-12-22 15:28:51,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:51,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:51,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535956598] [2020-12-22 15:28:51,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:51,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:51,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:51,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:51,060 INFO L87 Difference]: Start difference. First operand 10432 states and 13682 transitions. Second operand 3 states. [2020-12-22 15:28:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:53,712 INFO L93 Difference]: Finished difference Result 24432 states and 32108 transitions. [2020-12-22 15:28:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:53,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 15:28:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:53,807 INFO L225 Difference]: With dead ends: 24432 [2020-12-22 15:28:53,807 INFO L226 Difference]: Without dead ends: 14076 [2020-12-22 15:28:53,832 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 15:28:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2020-12-22 15:28:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 14046. [2020-12-22 15:28:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14046 states. [2020-12-22 15:28:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14046 states to 14046 states and 18424 transitions. [2020-12-22 15:28:54,322 INFO L78 Accepts]: Start accepts. Automaton has 14046 states and 18424 transitions. Word has length 71 [2020-12-22 15:28:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:54,325 INFO L481 AbstractCegarLoop]: Abstraction has 14046 states and 18424 transitions. [2020-12-22 15:28:54,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14046 states and 18424 transitions. [2020-12-22 15:28:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 15:28:54,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:54,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:28:54,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:28:54,332 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:54,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:54,332 INFO L82 PathProgramCache]: Analyzing trace with hash 968917594, now seen corresponding path program 1 times [2020-12-22 15:28:54,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:54,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570367416] [2020-12-22 15:28:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:28:54,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570367416] [2020-12-22 15:28:54,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:54,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:54,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103276686] [2020-12-22 15:28:54,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:54,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:54,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:54,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:54,804 INFO L87 Difference]: Start difference. First operand 14046 states and 18424 transitions. Second operand 3 states. [2020-12-22 15:28:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:28:57,730 INFO L93 Difference]: Finished difference Result 41946 states and 55062 transitions. [2020-12-22 15:28:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:28:57,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 15:28:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:28:57,810 INFO L225 Difference]: With dead ends: 41946 [2020-12-22 15:28:57,811 INFO L226 Difference]: Without dead ends: 27976 [2020-12-22 15:28:57,841 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 15:28:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27976 states. [2020-12-22 15:28:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27976 to 27906. [2020-12-22 15:28:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27906 states. [2020-12-22 15:28:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27906 states to 27906 states and 36640 transitions. [2020-12-22 15:28:58,725 INFO L78 Accepts]: Start accepts. Automaton has 27906 states and 36640 transitions. Word has length 77 [2020-12-22 15:28:58,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:28:58,727 INFO L481 AbstractCegarLoop]: Abstraction has 27906 states and 36640 transitions. [2020-12-22 15:28:58,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:28:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 27906 states and 36640 transitions. [2020-12-22 15:28:58,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 15:28:58,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:28:58,734 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] [2020-12-22 15:28:58,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:28:58,736 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:28:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:28:58,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1094154520, now seen corresponding path program 1 times [2020-12-22 15:28:58,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:28:58,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796052460] [2020-12-22 15:28:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:28:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:28:58,976 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 15:28:58,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796052460] [2020-12-22 15:28:58,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:28:58,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:28:58,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217932634] [2020-12-22 15:28:58,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:28:58,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:28:58,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:28:58,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:28:58,979 INFO L87 Difference]: Start difference. First operand 27906 states and 36640 transitions. Second operand 3 states. [2020-12-22 15:29:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:02,645 INFO L93 Difference]: Finished difference Result 77004 states and 101429 transitions. [2020-12-22 15:29:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:02,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 15:29:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:02,838 INFO L225 Difference]: With dead ends: 77004 [2020-12-22 15:29:02,838 INFO L226 Difference]: Without dead ends: 49174 [2020-12-22 15:29:02,923 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 15:29:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49174 states. [2020-12-22 15:29:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49174 to 48646. [2020-12-22 15:29:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48646 states. [2020-12-22 15:29:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48646 states to 48646 states and 64172 transitions. [2020-12-22 15:29:04,644 INFO L78 Accepts]: Start accepts. Automaton has 48646 states and 64172 transitions. Word has length 84 [2020-12-22 15:29:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:04,645 INFO L481 AbstractCegarLoop]: Abstraction has 48646 states and 64172 transitions. [2020-12-22 15:29:04,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 48646 states and 64172 transitions. [2020-12-22 15:29:04,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 15:29:04,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:04,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:04,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:29:04,656 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:04,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1477356694, now seen corresponding path program 1 times [2020-12-22 15:29:04,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:04,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227903691] [2020-12-22 15:29:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 15:29:04,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227903691] [2020-12-22 15:29:04,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:04,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:04,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714123640] [2020-12-22 15:29:04,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:04,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:04,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:04,888 INFO L87 Difference]: Start difference. First operand 48646 states and 64172 transitions. Second operand 3 states. [2020-12-22 15:29:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:08,292 INFO L93 Difference]: Finished difference Result 97267 states and 128321 transitions. [2020-12-22 15:29:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:08,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 15:29:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:08,394 INFO L225 Difference]: With dead ends: 97267 [2020-12-22 15:29:08,395 INFO L226 Difference]: Without dead ends: 48697 [2020-12-22 15:29:08,452 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 15:29:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48697 states. [2020-12-22 15:29:09,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48697 to 48697. [2020-12-22 15:29:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48697 states. [2020-12-22 15:29:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48697 states to 48697 states and 64230 transitions. [2020-12-22 15:29:10,069 INFO L78 Accepts]: Start accepts. Automaton has 48697 states and 64230 transitions. Word has length 89 [2020-12-22 15:29:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:10,069 INFO L481 AbstractCegarLoop]: Abstraction has 48697 states and 64230 transitions. [2020-12-22 15:29:10,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 48697 states and 64230 transitions. [2020-12-22 15:29:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 15:29:10,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:10,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:10,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:29:10,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash 337540895, now seen corresponding path program 1 times [2020-12-22 15:29:10,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:10,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312632588] [2020-12-22 15:29:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:29:10,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312632588] [2020-12-22 15:29:10,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:10,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:10,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436724255] [2020-12-22 15:29:10,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:10,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:10,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:10,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:10,384 INFO L87 Difference]: Start difference. First operand 48697 states and 64230 transitions. Second operand 3 states. [2020-12-22 15:29:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:14,317 INFO L93 Difference]: Finished difference Result 108425 states and 143276 transitions. [2020-12-22 15:29:14,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:14,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-22 15:29:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:14,443 INFO L225 Difference]: With dead ends: 108425 [2020-12-22 15:29:14,443 INFO L226 Difference]: Without dead ends: 59855 [2020-12-22 15:29:14,514 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 15:29:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59855 states. [2020-12-22 15:29:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59855 to 59777. [2020-12-22 15:29:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59777 states. [2020-12-22 15:29:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59777 states to 59777 states and 78878 transitions. [2020-12-22 15:29:16,403 INFO L78 Accepts]: Start accepts. Automaton has 59777 states and 78878 transitions. Word has length 103 [2020-12-22 15:29:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:16,404 INFO L481 AbstractCegarLoop]: Abstraction has 59777 states and 78878 transitions. [2020-12-22 15:29:16,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 59777 states and 78878 transitions. [2020-12-22 15:29:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 15:29:16,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:16,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:16,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 15:29:16,410 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:16,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1534737798, now seen corresponding path program 1 times [2020-12-22 15:29:16,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:16,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128497389] [2020-12-22 15:29:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 15:29:16,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128497389] [2020-12-22 15:29:16,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:16,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:16,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086628716] [2020-12-22 15:29:16,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:16,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:16,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:16,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:16,680 INFO L87 Difference]: Start difference. First operand 59777 states and 78878 transitions. Second operand 3 states. [2020-12-22 15:29:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:21,117 INFO L93 Difference]: Finished difference Result 177605 states and 234684 transitions. [2020-12-22 15:29:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:21,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 15:29:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:21,338 INFO L225 Difference]: With dead ends: 177605 [2020-12-22 15:29:21,339 INFO L226 Difference]: Without dead ends: 117955 [2020-12-22 15:29:21,439 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 15:29:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117955 states. [2020-12-22 15:29:24,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117955 to 117933. [2020-12-22 15:29:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117933 states. [2020-12-22 15:29:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117933 states to 117933 states and 155794 transitions. [2020-12-22 15:29:24,745 INFO L78 Accepts]: Start accepts. Automaton has 117933 states and 155794 transitions. Word has length 118 [2020-12-22 15:29:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:24,745 INFO L481 AbstractCegarLoop]: Abstraction has 117933 states and 155794 transitions. [2020-12-22 15:29:24,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 117933 states and 155794 transitions. [2020-12-22 15:29:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 15:29:24,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:24,750 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:24,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 15:29:24,751 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:24,751 INFO L82 PathProgramCache]: Analyzing trace with hash -974038020, now seen corresponding path program 1 times [2020-12-22 15:29:24,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:24,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887701060] [2020-12-22 15:29:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 15:29:25,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887701060] [2020-12-22 15:29:25,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:25,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:25,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972689368] [2020-12-22 15:29:25,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:25,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:25,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:25,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:25,019 INFO L87 Difference]: Start difference. First operand 117933 states and 155794 transitions. Second operand 3 states. [2020-12-22 15:29:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:31,079 INFO L93 Difference]: Finished difference Result 293965 states and 388564 transitions. [2020-12-22 15:29:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:31,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 15:29:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:31,448 INFO L225 Difference]: With dead ends: 293965 [2020-12-22 15:29:31,448 INFO L226 Difference]: Without dead ends: 175715 [2020-12-22 15:29:31,609 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 15:29:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175715 states. [2020-12-22 15:29:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175715 to 175693. [2020-12-22 15:29:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:29:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 232233 transitions. [2020-12-22 15:29:36,122 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 232233 transitions. Word has length 118 [2020-12-22 15:29:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:36,123 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 232233 transitions. [2020-12-22 15:29:36,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 232233 transitions. [2020-12-22 15:29:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 15:29:36,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:36,130 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:36,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 15:29:36,130 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:36,131 INFO L82 PathProgramCache]: Analyzing trace with hash 507732604, now seen corresponding path program 1 times [2020-12-22 15:29:36,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:36,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739781137] [2020-12-22 15:29:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 15:29:36,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739781137] [2020-12-22 15:29:36,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:36,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:29:36,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745448329] [2020-12-22 15:29:36,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:36,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:36,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:36,606 INFO L87 Difference]: Start difference. First operand 175693 states and 232233 transitions. Second operand 3 states. [2020-12-22 15:29:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:43,758 INFO L93 Difference]: Finished difference Result 409293 states and 541106 transitions. [2020-12-22 15:29:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:43,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 15:29:43,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:44,223 INFO L225 Difference]: With dead ends: 409293 [2020-12-22 15:29:44,223 INFO L226 Difference]: Without dead ends: 233475 [2020-12-22 15:29:44,414 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 15:29:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233475 states. [2020-12-22 15:29:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233475 to 175693. [2020-12-22 15:29:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:29:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 232232 transitions. [2020-12-22 15:29:49,560 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 232232 transitions. Word has length 132 [2020-12-22 15:29:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:29:49,560 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 232232 transitions. [2020-12-22 15:29:49,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:29:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 232232 transitions. [2020-12-22 15:29:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 15:29:49,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:29:49,567 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:29:49,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 15:29:49,568 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:29:49,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:29:49,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1068432382, now seen corresponding path program 1 times [2020-12-22 15:29:49,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:29:49,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853397968] [2020-12-22 15:29:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:29:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:29:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 15:29:50,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853397968] [2020-12-22 15:29:50,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:29:50,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:29:50,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328253335] [2020-12-22 15:29:50,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:29:50,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:29:50,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:29:50,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:29:50,167 INFO L87 Difference]: Start difference. First operand 175693 states and 232232 transitions. Second operand 3 states. [2020-12-22 15:29:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:29:54,901 INFO L93 Difference]: Finished difference Result 351259 states and 464321 transitions. [2020-12-22 15:29:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:29:54,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 15:29:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:29:55,271 INFO L225 Difference]: With dead ends: 351259 [2020-12-22 15:29:55,271 INFO L226 Difference]: Without dead ends: 175693 [2020-12-22 15:29:55,493 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 15:29:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175693 states. [2020-12-22 15:30:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175693 to 175693. [2020-12-22 15:30:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:30:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 231536 transitions. [2020-12-22 15:30:00,655 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 231536 transitions. Word has length 132 [2020-12-22 15:30:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:00,655 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 231536 transitions. [2020-12-22 15:30:00,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:30:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 231536 transitions. [2020-12-22 15:30:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 15:30:00,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:00,661 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:00,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 15:30:00,662 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1238237007, now seen corresponding path program 1 times [2020-12-22 15:30:00,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:00,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66424939] [2020-12-22 15:30:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 15:30:00,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66424939] [2020-12-22 15:30:00,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:00,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:30:00,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414218561] [2020-12-22 15:30:00,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:30:00,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:00,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:30:00,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:30:00,971 INFO L87 Difference]: Start difference. First operand 175693 states and 231536 transitions. Second operand 4 states. [2020-12-22 15:30:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:07,527 INFO L93 Difference]: Finished difference Result 351259 states and 462929 transitions. [2020-12-22 15:30:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:07,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-12-22 15:30:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:07,867 INFO L225 Difference]: With dead ends: 351259 [2020-12-22 15:30:07,867 INFO L226 Difference]: Without dead ends: 175693 [2020-12-22 15:30:08,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:30:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175693 states. [2020-12-22 15:30:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175693 to 175693. [2020-12-22 15:30:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:30:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 230840 transitions. [2020-12-22 15:30:16,147 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 230840 transitions. Word has length 133 [2020-12-22 15:30:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:16,148 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 230840 transitions. [2020-12-22 15:30:16,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:30:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 230840 transitions. [2020-12-22 15:30:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 15:30:16,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:16,154 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:16,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 15:30:16,155 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:16,156 INFO L82 PathProgramCache]: Analyzing trace with hash 269604921, now seen corresponding path program 1 times [2020-12-22 15:30:16,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:16,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924254475] [2020-12-22 15:30:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 15:30:16,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924254475] [2020-12-22 15:30:16,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:16,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:30:16,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037515434] [2020-12-22 15:30:16,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:30:16,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:16,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:30:16,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:30:16,559 INFO L87 Difference]: Start difference. First operand 175693 states and 230840 transitions. Second operand 4 states. [2020-12-22 15:30:24,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:24,292 INFO L93 Difference]: Finished difference Result 351259 states and 461537 transitions. [2020-12-22 15:30:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:24,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-12-22 15:30:24,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:24,645 INFO L225 Difference]: With dead ends: 351259 [2020-12-22 15:30:24,646 INFO L226 Difference]: Without dead ends: 175693 [2020-12-22 15:30:24,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:30:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175693 states. [2020-12-22 15:30:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175693 to 175693. [2020-12-22 15:30:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:30:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 230144 transitions. [2020-12-22 15:30:31,562 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 230144 transitions. Word has length 134 [2020-12-22 15:30:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:31,563 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 230144 transitions. [2020-12-22 15:30:31,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:30:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 230144 transitions. [2020-12-22 15:30:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 15:30:31,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:31,567 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:31,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 15:30:31,568 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash -231786612, now seen corresponding path program 1 times [2020-12-22 15:30:31,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:31,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749993965] [2020-12-22 15:30:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 15:30:32,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749993965] [2020-12-22 15:30:32,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:32,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:30:32,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559618245] [2020-12-22 15:30:32,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:30:32,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:32,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:30:32,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:30:32,194 INFO L87 Difference]: Start difference. First operand 175693 states and 230144 transitions. Second operand 4 states. [2020-12-22 15:30:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:39,658 INFO L93 Difference]: Finished difference Result 351259 states and 460145 transitions. [2020-12-22 15:30:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:39,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-12-22 15:30:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:40,008 INFO L225 Difference]: With dead ends: 351259 [2020-12-22 15:30:40,008 INFO L226 Difference]: Without dead ends: 175693 [2020-12-22 15:30:40,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:30:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175693 states. [2020-12-22 15:30:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175693 to 175693. [2020-12-22 15:30:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:30:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 229448 transitions. [2020-12-22 15:30:47,454 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 229448 transitions. Word has length 135 [2020-12-22 15:30:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:30:47,454 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 229448 transitions. [2020-12-22 15:30:47,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:30:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 229448 transitions. [2020-12-22 15:30:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 15:30:47,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:30:47,458 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:30:47,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 15:30:47,459 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:30:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:30:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1405094004, now seen corresponding path program 1 times [2020-12-22 15:30:47,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:30:47,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077893415] [2020-12-22 15:30:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:30:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:30:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 15:30:48,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077893415] [2020-12-22 15:30:48,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:30:48,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:30:48,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426531329] [2020-12-22 15:30:48,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:30:48,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:30:48,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:30:48,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:30:48,060 INFO L87 Difference]: Start difference. First operand 175693 states and 229448 transitions. Second operand 4 states. [2020-12-22 15:30:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:30:56,435 INFO L93 Difference]: Finished difference Result 351259 states and 458753 transitions. [2020-12-22 15:30:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:30:56,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-12-22 15:30:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:30:56,759 INFO L225 Difference]: With dead ends: 351259 [2020-12-22 15:30:56,759 INFO L226 Difference]: Without dead ends: 175693 [2020-12-22 15:30:56,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:30:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175693 states. [2020-12-22 15:31:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175693 to 175693. [2020-12-22 15:31:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:31:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 228752 transitions. [2020-12-22 15:31:05,279 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 228752 transitions. Word has length 136 [2020-12-22 15:31:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:31:05,279 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 228752 transitions. [2020-12-22 15:31:05,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:31:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 228752 transitions. [2020-12-22 15:31:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 15:31:05,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:31:05,284 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:31:05,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 15:31:05,284 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:31:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:31:05,285 INFO L82 PathProgramCache]: Analyzing trace with hash 608934503, now seen corresponding path program 1 times [2020-12-22 15:31:05,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:31:05,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960736394] [2020-12-22 15:31:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:31:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:31:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 15:31:05,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960736394] [2020-12-22 15:31:05,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:31:05,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:31:05,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447233636] [2020-12-22 15:31:05,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:31:05,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:31:05,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:31:05,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:31:05,569 INFO L87 Difference]: Start difference. First operand 175693 states and 228752 transitions. Second operand 4 states. [2020-12-22 15:31:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:31:17,038 INFO L93 Difference]: Finished difference Result 351259 states and 457361 transitions. [2020-12-22 15:31:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:31:17,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-12-22 15:31:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:31:17,367 INFO L225 Difference]: With dead ends: 351259 [2020-12-22 15:31:17,367 INFO L226 Difference]: Without dead ends: 175693 [2020-12-22 15:31:17,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:31:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175693 states. [2020-12-22 15:31:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175693 to 175693. [2020-12-22 15:31:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175693 states. [2020-12-22 15:31:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175693 states to 175693 states and 228056 transitions. [2020-12-22 15:31:26,301 INFO L78 Accepts]: Start accepts. Automaton has 175693 states and 228056 transitions. Word has length 137 [2020-12-22 15:31:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:31:26,301 INFO L481 AbstractCegarLoop]: Abstraction has 175693 states and 228056 transitions. [2020-12-22 15:31:26,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:31:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 175693 states and 228056 transitions. [2020-12-22 15:31:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 15:31:26,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:31:26,306 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:31:26,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 15:31:26,306 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:31:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:31:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1697942703, now seen corresponding path program 1 times [2020-12-22 15:31:26,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:31:26,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715180205] [2020-12-22 15:31:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:31:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:31:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-22 15:31:27,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715180205] [2020-12-22 15:31:27,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:31:27,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:31:27,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190873402] [2020-12-22 15:31:27,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:31:27,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:31:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:31:27,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:31:27,971 INFO L87 Difference]: Start difference. First operand 175693 states and 228056 transitions. Second operand 3 states.