/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:59:47,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:59:47,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:59:47,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:59:47,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:59:47,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:59:47,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:59:47,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:59:47,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:59:47,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:59:47,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:59:47,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:59:47,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:59:48,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:59:48,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:59:48,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:59:48,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:59:48,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:59:48,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:59:48,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:59:48,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:59:48,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:59:48,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:59:48,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:59:48,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 14:59:48,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:59:48,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:59:48,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:59:48,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:59:48,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:59:48,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:59:48,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:59:48,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:59:48,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:59:48,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:59:48,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:59:48,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:59:48,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:59:48,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:59:48,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:59:48,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:59:48,149 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:59:48,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:59:48,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:59:48,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:59:48,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:59:48,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:59:48,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:59:48,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:59:48,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:59:48,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:59:48,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:59:48,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:59:48,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:59:48,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:59:48,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:59:48,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:59:48,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:59:48,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:59:48,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:59:48,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:59:48,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:59:48,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:59:48,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:59:48,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:59:48,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:59:48,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:59:48,671 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:59:48,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2020-12-22 14:59:48,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53421404/77f3dc8625b74466b8eb1672ce8f9f10/FLAGff5db6cf3 [2020-12-22 14:59:49,886 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:59:49,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2020-12-22 14:59:49,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53421404/77f3dc8625b74466b8eb1672ce8f9f10/FLAGff5db6cf3 [2020-12-22 14:59:50,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53421404/77f3dc8625b74466b8eb1672ce8f9f10 [2020-12-22 14:59:50,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:59:50,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:59:50,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:59:50,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:59:50,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:59:50,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:59:50" (1/1) ... [2020-12-22 14:59:50,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f88977b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:50, skipping insertion in model container [2020-12-22 14:59:50,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:59:50" (1/1) ... [2020-12-22 14:59:50,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:59:50,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:59:51,980 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2020-12-22 14:59:52,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:59:52,062 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:59:52,399 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2020-12-22 14:59:52,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:59:52,692 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:59:52,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52 WrapperNode [2020-12-22 14:59:52,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:59:52,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:59:52,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:59:52,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:59:52,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:52,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:54,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:59:54,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:59:54,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:59:54,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:59:54,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:54,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:54,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:54,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:54,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:54,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:55,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (1/1) ... [2020-12-22 14:59:55,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:59:55,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:59:55,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:59:55,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:59:55,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (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 14:59:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:59:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:59:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:59:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:59:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:59:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:59:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:59:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:59:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:59:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:59:55,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:00:10,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:00:10,745 INFO L299 CfgBuilder]: Removed 6842 assume(true) statements. [2020-12-22 15:00:10,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:00:10 BoogieIcfgContainer [2020-12-22 15:00:10,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:00:10,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:00:10,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:00:10,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:00:10,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:59:50" (1/3) ... [2020-12-22 15:00:10,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb16db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:00:10, skipping insertion in model container [2020-12-22 15:00:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:52" (2/3) ... [2020-12-22 15:00:10,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb16db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:00:10, skipping insertion in model container [2020-12-22 15:00:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:00:10" (3/3) ... [2020-12-22 15:00:10,762 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2020-12-22 15:00:10,770 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:00:10,778 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 15:00:10,799 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 15:00:10,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:00:10,848 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:00:10,849 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:00:10,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:00:10,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:00:10,849 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:00:10,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:00:10,849 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:00:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states. [2020-12-22 15:00:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 15:00:10,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:10,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:10,951 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:10,958 INFO L82 PathProgramCache]: Analyzing trace with hash 436413170, now seen corresponding path program 1 times [2020-12-22 15:00:10,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:10,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751491144] [2020-12-22 15:00:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:11,650 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 15:00:11,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751491144] [2020-12-22 15:00:11,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:11,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:00:11,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558353498] [2020-12-22 15:00:11,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 15:00:11,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 15:00:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:00:11,678 INFO L87 Difference]: Start difference. First operand 3847 states. Second operand 2 states. [2020-12-22 15:00:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:11,983 INFO L93 Difference]: Finished difference Result 7690 states and 8713 transitions. [2020-12-22 15:00:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 15:00:11,985 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 85 [2020-12-22 15:00:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:12,034 INFO L225 Difference]: With dead ends: 7690 [2020-12-22 15:00:12,034 INFO L226 Difference]: Without dead ends: 3827 [2020-12-22 15:00:12,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:00:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2020-12-22 15:00:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 3827. [2020-12-22 15:00:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3827 states. [2020-12-22 15:00:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 4307 transitions. [2020-12-22 15:00:12,504 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 4307 transitions. Word has length 85 [2020-12-22 15:00:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:12,506 INFO L481 AbstractCegarLoop]: Abstraction has 3827 states and 4307 transitions. [2020-12-22 15:00:12,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 15:00:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 4307 transitions. [2020-12-22 15:00:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 15:00:12,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:12,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:12,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:00:12,518 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1452762514, now seen corresponding path program 1 times [2020-12-22 15:00:12,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:12,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883914458] [2020-12-22 15:00:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:12,862 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 15:00:12,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883914458] [2020-12-22 15:00:12,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:12,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:12,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870583165] [2020-12-22 15:00:12,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:00:12,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:12,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:00:12,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:00:12,869 INFO L87 Difference]: Start difference. First operand 3827 states and 4307 transitions. Second operand 4 states. [2020-12-22 15:00:13,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:13,644 INFO L93 Difference]: Finished difference Result 12718 states and 14353 transitions. [2020-12-22 15:00:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:00:13,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 15:00:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:13,693 INFO L225 Difference]: With dead ends: 12718 [2020-12-22 15:00:13,694 INFO L226 Difference]: Without dead ends: 8905 [2020-12-22 15:00:13,707 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 15:00:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2020-12-22 15:00:13,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 4806. [2020-12-22 15:00:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4806 states. [2020-12-22 15:00:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 5424 transitions. [2020-12-22 15:00:13,949 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 5424 transitions. Word has length 85 [2020-12-22 15:00:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:13,950 INFO L481 AbstractCegarLoop]: Abstraction has 4806 states and 5424 transitions. [2020-12-22 15:00:13,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:00:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 5424 transitions. [2020-12-22 15:00:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 15:00:13,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:13,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:13,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:00:13,963 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1938859404, now seen corresponding path program 1 times [2020-12-22 15:00:13,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:13,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455621673] [2020-12-22 15:00:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:14,251 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 15:00:14,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455621673] [2020-12-22 15:00:14,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:14,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:14,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281872524] [2020-12-22 15:00:14,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:00:14,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:14,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:00:14,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:00:14,257 INFO L87 Difference]: Start difference. First operand 4806 states and 5424 transitions. Second operand 4 states. [2020-12-22 15:00:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:15,312 INFO L93 Difference]: Finished difference Result 17613 states and 19940 transitions. [2020-12-22 15:00:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:00:15,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-22 15:00:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:15,391 INFO L225 Difference]: With dead ends: 17613 [2020-12-22 15:00:15,392 INFO L226 Difference]: Without dead ends: 12821 [2020-12-22 15:00:15,415 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 15:00:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12821 states. [2020-12-22 15:00:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12821 to 8879. [2020-12-22 15:00:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8879 states. [2020-12-22 15:00:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8879 states to 8879 states and 10031 transitions. [2020-12-22 15:00:15,954 INFO L78 Accepts]: Start accepts. Automaton has 8879 states and 10031 transitions. Word has length 86 [2020-12-22 15:00:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:15,957 INFO L481 AbstractCegarLoop]: Abstraction has 8879 states and 10031 transitions. [2020-12-22 15:00:15,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:00:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8879 states and 10031 transitions. [2020-12-22 15:00:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 15:00:15,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:15,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:15,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:00:15,970 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:15,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:15,970 INFO L82 PathProgramCache]: Analyzing trace with hash 390862694, now seen corresponding path program 1 times [2020-12-22 15:00:15,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:15,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268634183] [2020-12-22 15:00:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:16,160 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 15:00:16,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268634183] [2020-12-22 15:00:16,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:16,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:16,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406767340] [2020-12-22 15:00:16,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:00:16,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:16,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:00:16,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:00:16,165 INFO L87 Difference]: Start difference. First operand 8879 states and 10031 transitions. Second operand 4 states. [2020-12-22 15:00:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:17,663 INFO L93 Difference]: Finished difference Result 33057 states and 37455 transitions. [2020-12-22 15:00:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:00:17,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 15:00:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:17,754 INFO L225 Difference]: With dead ends: 33057 [2020-12-22 15:00:17,754 INFO L226 Difference]: Without dead ends: 24192 [2020-12-22 15:00:17,778 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 15:00:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24192 states. [2020-12-22 15:00:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24192 to 16325. [2020-12-22 15:00:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16325 states. [2020-12-22 15:00:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16325 states to 16325 states and 18458 transitions. [2020-12-22 15:00:18,645 INFO L78 Accepts]: Start accepts. Automaton has 16325 states and 18458 transitions. Word has length 87 [2020-12-22 15:00:18,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:18,646 INFO L481 AbstractCegarLoop]: Abstraction has 16325 states and 18458 transitions. [2020-12-22 15:00:18,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:00:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand 16325 states and 18458 transitions. [2020-12-22 15:00:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 15:00:18,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:18,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:18,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:00:18,664 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:18,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:18,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1184389102, now seen corresponding path program 1 times [2020-12-22 15:00:18,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:18,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384725518] [2020-12-22 15:00:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:18,895 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 15:00:18,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384725518] [2020-12-22 15:00:18,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:18,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:18,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119993304] [2020-12-22 15:00:18,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:00:18,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:18,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:00:18,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:00:18,903 INFO L87 Difference]: Start difference. First operand 16325 states and 18458 transitions. Second operand 4 states. [2020-12-22 15:00:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:21,180 INFO L93 Difference]: Finished difference Result 61841 states and 70116 transitions. [2020-12-22 15:00:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:00:21,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-22 15:00:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:21,318 INFO L225 Difference]: With dead ends: 61841 [2020-12-22 15:00:21,319 INFO L226 Difference]: Without dead ends: 45530 [2020-12-22 15:00:21,385 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 15:00:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45530 states. [2020-12-22 15:00:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45530 to 29816. [2020-12-22 15:00:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29816 states. [2020-12-22 15:00:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29816 states to 29816 states and 33736 transitions. [2020-12-22 15:00:23,214 INFO L78 Accepts]: Start accepts. Automaton has 29816 states and 33736 transitions. Word has length 88 [2020-12-22 15:00:23,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:23,214 INFO L481 AbstractCegarLoop]: Abstraction has 29816 states and 33736 transitions. [2020-12-22 15:00:23,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:00:23,214 INFO L276 IsEmpty]: Start isEmpty. Operand 29816 states and 33736 transitions. [2020-12-22 15:00:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 15:00:23,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:23,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:23,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:00:23,226 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:23,227 INFO L82 PathProgramCache]: Analyzing trace with hash -490209564, now seen corresponding path program 1 times [2020-12-22 15:00:23,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:23,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796327174] [2020-12-22 15:00:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:00:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796327174] [2020-12-22 15:00:23,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:23,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:00:23,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203491462] [2020-12-22 15:00:23,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:00:23,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:23,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:00:23,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:23,458 INFO L87 Difference]: Start difference. First operand 29816 states and 33736 transitions. Second operand 5 states. [2020-12-22 15:00:26,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:26,047 INFO L93 Difference]: Finished difference Result 91688 states and 103876 transitions. [2020-12-22 15:00:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:00:26,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 15:00:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:26,209 INFO L225 Difference]: With dead ends: 91688 [2020-12-22 15:00:26,209 INFO L226 Difference]: Without dead ends: 61886 [2020-12-22 15:00:26,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:00:26,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61886 states. [2020-12-22 15:00:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61886 to 29856. [2020-12-22 15:00:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29856 states. [2020-12-22 15:00:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29856 states to 29856 states and 33776 transitions. [2020-12-22 15:00:28,104 INFO L78 Accepts]: Start accepts. Automaton has 29856 states and 33776 transitions. Word has length 92 [2020-12-22 15:00:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:28,105 INFO L481 AbstractCegarLoop]: Abstraction has 29856 states and 33776 transitions. [2020-12-22 15:00:28,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:00:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 29856 states and 33776 transitions. [2020-12-22 15:00:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 15:00:28,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:28,117 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:28,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:00:28,117 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:28,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2132119318, now seen corresponding path program 1 times [2020-12-22 15:00:28,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:28,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678848297] [2020-12-22 15:00:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:00:28,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678848297] [2020-12-22 15:00:28,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:28,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:28,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778876040] [2020-12-22 15:00:28,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:28,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:28,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:00:28,258 INFO L87 Difference]: Start difference. First operand 29856 states and 33776 transitions. Second operand 3 states. [2020-12-22 15:00:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:30,930 INFO L93 Difference]: Finished difference Result 81174 states and 91829 transitions. [2020-12-22 15:00:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:30,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 15:00:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:31,033 INFO L225 Difference]: With dead ends: 81174 [2020-12-22 15:00:31,034 INFO L226 Difference]: Without dead ends: 51332 [2020-12-22 15:00:31,125 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 15:00:31,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51332 states. [2020-12-22 15:00:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51332 to 47060. [2020-12-22 15:00:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47060 states. [2020-12-22 15:00:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47060 states to 47060 states and 53436 transitions. [2020-12-22 15:00:33,484 INFO L78 Accepts]: Start accepts. Automaton has 47060 states and 53436 transitions. Word has length 108 [2020-12-22 15:00:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:33,484 INFO L481 AbstractCegarLoop]: Abstraction has 47060 states and 53436 transitions. [2020-12-22 15:00:33,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 47060 states and 53436 transitions. [2020-12-22 15:00:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 15:00:33,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:33,498 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:33,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 15:00:33,498 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:33,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1870052933, now seen corresponding path program 1 times [2020-12-22 15:00:33,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:33,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940865450] [2020-12-22 15:00:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 15:00:33,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940865450] [2020-12-22 15:00:33,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:33,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:33,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972563253] [2020-12-22 15:00:33,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:33,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:33,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:33,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:00:33,735 INFO L87 Difference]: Start difference. First operand 47060 states and 53436 transitions. Second operand 3 states. [2020-12-22 15:00:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:36,393 INFO L93 Difference]: Finished difference Result 95514 states and 108521 transitions. [2020-12-22 15:00:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:36,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-12-22 15:00:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:36,590 INFO L225 Difference]: With dead ends: 95514 [2020-12-22 15:00:36,590 INFO L226 Difference]: Without dead ends: 48468 [2020-12-22 15:00:36,704 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 15:00:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48468 states. [2020-12-22 15:00:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48468 to 47316. [2020-12-22 15:00:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47316 states. [2020-12-22 15:00:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47316 states to 47316 states and 53692 transitions. [2020-12-22 15:00:38,900 INFO L78 Accepts]: Start accepts. Automaton has 47316 states and 53692 transitions. Word has length 237 [2020-12-22 15:00:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:38,901 INFO L481 AbstractCegarLoop]: Abstraction has 47316 states and 53692 transitions. [2020-12-22 15:00:38,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 47316 states and 53692 transitions. [2020-12-22 15:00:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 15:00:38,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:38,914 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:38,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 15:00:38,914 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1525441174, now seen corresponding path program 1 times [2020-12-22 15:00:38,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:38,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104162590] [2020-12-22 15:00:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 15:00:39,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104162590] [2020-12-22 15:00:39,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006610065] [2020-12-22 15:00:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:00:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:40,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:00:40,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:00:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:00:41,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:00:41,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:00:41,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768446008] [2020-12-22 15:00:41,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:41,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:41,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:41,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:41,510 INFO L87 Difference]: Start difference. First operand 47316 states and 53692 transitions. Second operand 3 states. [2020-12-22 15:00:43,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:43,573 INFO L93 Difference]: Finished difference Result 95738 states and 108585 transitions. [2020-12-22 15:00:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:43,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-12-22 15:00:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:43,648 INFO L225 Difference]: With dead ends: 95738 [2020-12-22 15:00:43,648 INFO L226 Difference]: Without dead ends: 48436 [2020-12-22 15:00:43,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:43,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48436 states. [2020-12-22 15:00:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48436 to 47348. [2020-12-22 15:00:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47348 states. [2020-12-22 15:00:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47348 states to 47348 states and 53724 transitions. [2020-12-22 15:00:45,802 INFO L78 Accepts]: Start accepts. Automaton has 47348 states and 53724 transitions. Word has length 240 [2020-12-22 15:00:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:45,803 INFO L481 AbstractCegarLoop]: Abstraction has 47348 states and 53724 transitions. [2020-12-22 15:00:45,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 47348 states and 53724 transitions. [2020-12-22 15:00:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-12-22 15:00:45,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:45,821 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:46,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 15:00:46,044 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:46,045 INFO L82 PathProgramCache]: Analyzing trace with hash 708218715, now seen corresponding path program 1 times [2020-12-22 15:00:46,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:46,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170856700] [2020-12-22 15:00:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 15:00:46,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170856700] [2020-12-22 15:00:46,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285289031] [2020-12-22 15:00:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:00:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:48,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:00:48,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:00:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 15:00:48,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:00:48,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:00:48,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995816509] [2020-12-22 15:00:48,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:48,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:48,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:48,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:48,650 INFO L87 Difference]: Start difference. First operand 47348 states and 53724 transitions. Second operand 3 states. [2020-12-22 15:00:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:51,684 INFO L93 Difference]: Finished difference Result 116814 states and 132845 transitions. [2020-12-22 15:00:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:51,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2020-12-22 15:00:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:51,782 INFO L225 Difference]: With dead ends: 116814 [2020-12-22 15:00:51,782 INFO L226 Difference]: Without dead ends: 69480 [2020-12-22 15:00:51,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69480 states. [2020-12-22 15:00:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69480 to 65176. [2020-12-22 15:00:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65176 states. [2020-12-22 15:00:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65176 states to 65176 states and 74264 transitions. [2020-12-22 15:00:54,523 INFO L78 Accepts]: Start accepts. Automaton has 65176 states and 74264 transitions. Word has length 253 [2020-12-22 15:00:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:54,523 INFO L481 AbstractCegarLoop]: Abstraction has 65176 states and 74264 transitions. [2020-12-22 15:00:54,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 65176 states and 74264 transitions. [2020-12-22 15:00:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-12-22 15:00:54,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:54,543 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:54,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 15:00:54,758 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:54,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:54,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1010432159, now seen corresponding path program 1 times [2020-12-22 15:00:54,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:54,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712952379] [2020-12-22 15:00:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 15:00:54,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712952379] [2020-12-22 15:00:54,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435624891] [2020-12-22 15:00:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:00:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:56,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:00:56,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:00:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 15:00:57,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:00:57,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 15:00:57,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116225551] [2020-12-22 15:00:57,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:00:57,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:57,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:00:57,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:57,298 INFO L87 Difference]: Start difference. First operand 65176 states and 74264 transitions. Second operand 5 states. [2020-12-22 15:01:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:02,675 INFO L93 Difference]: Finished difference Result 134178 states and 152737 transitions. [2020-12-22 15:01:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:01:02,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-12-22 15:01:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:02,858 INFO L225 Difference]: With dead ends: 134178 [2020-12-22 15:01:02,858 INFO L226 Difference]: Without dead ends: 69016 [2020-12-22 15:01:02,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69016 states. [2020-12-22 15:01:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69016 to 67288. [2020-12-22 15:01:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67288 states. [2020-12-22 15:01:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67288 states to 67288 states and 76376 transitions. [2020-12-22 15:01:06,216 INFO L78 Accepts]: Start accepts. Automaton has 67288 states and 76376 transitions. Word has length 270 [2020-12-22 15:01:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:06,216 INFO L481 AbstractCegarLoop]: Abstraction has 67288 states and 76376 transitions. [2020-12-22 15:01:06,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:01:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 67288 states and 76376 transitions. [2020-12-22 15:01:06,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-12-22 15:01:06,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:06,241 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:06,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 15:01:06,455 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:06,456 INFO L82 PathProgramCache]: Analyzing trace with hash -68543086, now seen corresponding path program 2 times [2020-12-22 15:01:06,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:06,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973573567] [2020-12-22 15:01:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 15:01:06,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973573567] [2020-12-22 15:01:06,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:01:06,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:01:06,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452838172] [2020-12-22 15:01:06,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:01:06,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:06,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:01:06,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:01:06,758 INFO L87 Difference]: Start difference. First operand 67288 states and 76376 transitions. Second operand 4 states. [2020-12-22 15:01:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:09,900 INFO L93 Difference]: Finished difference Result 136162 states and 154465 transitions. [2020-12-22 15:01:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:01:09,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2020-12-22 15:01:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:10,017 INFO L225 Difference]: With dead ends: 136162 [2020-12-22 15:01:10,017 INFO L226 Difference]: Without dead ends: 68888 [2020-12-22 15:01:10,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:01:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68888 states. [2020-12-22 15:01:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68888 to 67416. [2020-12-22 15:01:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67416 states. [2020-12-22 15:01:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67416 states to 67416 states and 76504 transitions. [2020-12-22 15:01:13,000 INFO L78 Accepts]: Start accepts. Automaton has 67416 states and 76504 transitions. Word has length 273 [2020-12-22 15:01:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:13,001 INFO L481 AbstractCegarLoop]: Abstraction has 67416 states and 76504 transitions. [2020-12-22 15:01:13,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:01:13,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67416 states and 76504 transitions. [2020-12-22 15:01:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-12-22 15:01:13,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:13,013 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:13,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 15:01:13,013 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:13,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1850676198, now seen corresponding path program 1 times [2020-12-22 15:01:13,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:13,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6264720] [2020-12-22 15:01:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-22 15:01:13,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6264720] [2020-12-22 15:01:13,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4578493] [2020-12-22 15:01:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:15,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 3370 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 15:01:15,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:01:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 15:01:16,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:01:16,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 15:01:16,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660875599] [2020-12-22 15:01:16,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 15:01:16,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:16,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 15:01:16,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:01:16,401 INFO L87 Difference]: Start difference. First operand 67416 states and 76504 transitions. Second operand 7 states. [2020-12-22 15:01:20,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:20,006 INFO L93 Difference]: Finished difference Result 140994 states and 159713 transitions. [2020-12-22 15:01:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:01:20,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-12-22 15:01:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:20,123 INFO L225 Difference]: With dead ends: 140994 [2020-12-22 15:01:20,123 INFO L226 Difference]: Without dead ends: 73592 [2020-12-22 15:01:20,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:01:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73592 states. [2020-12-22 15:01:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73592 to 70712. [2020-12-22 15:01:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70712 states. [2020-12-22 15:01:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70712 states to 70712 states and 79864 transitions. [2020-12-22 15:01:23,426 INFO L78 Accepts]: Start accepts. Automaton has 70712 states and 79864 transitions. Word has length 321 [2020-12-22 15:01:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:23,426 INFO L481 AbstractCegarLoop]: Abstraction has 70712 states and 79864 transitions. [2020-12-22 15:01:23,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 15:01:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 70712 states and 79864 transitions. [2020-12-22 15:01:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-12-22 15:01:23,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:23,443 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:23,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:23,646 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash -491363857, now seen corresponding path program 2 times [2020-12-22 15:01:23,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:23,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110649420] [2020-12-22 15:01:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-12-22 15:01:24,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110649420] [2020-12-22 15:01:24,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:01:24,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 15:01:24,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480258361] [2020-12-22 15:01:24,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:01:24,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:24,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:01:24,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:24,154 INFO L87 Difference]: Start difference. First operand 70712 states and 79864 transitions. Second operand 5 states. [2020-12-22 15:01:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:33,325 INFO L93 Difference]: Finished difference Result 280778 states and 317185 transitions. [2020-12-22 15:01:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 15:01:33,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 361 [2020-12-22 15:01:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:33,874 INFO L225 Difference]: With dead ends: 280778 [2020-12-22 15:01:33,874 INFO L226 Difference]: Without dead ends: 210080 [2020-12-22 15:01:33,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 15:01:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210080 states. [2020-12-22 15:01:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210080 to 70736. [2020-12-22 15:01:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70736 states. [2020-12-22 15:01:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70736 states to 70736 states and 79888 transitions. [2020-12-22 15:01:39,008 INFO L78 Accepts]: Start accepts. Automaton has 70736 states and 79888 transitions. Word has length 361 [2020-12-22 15:01:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:39,009 INFO L481 AbstractCegarLoop]: Abstraction has 70736 states and 79888 transitions. [2020-12-22 15:01:39,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:01:39,009 INFO L276 IsEmpty]: Start isEmpty. Operand 70736 states and 79888 transitions. [2020-12-22 15:01:39,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-12-22 15:01:39,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:39,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:39,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 15:01:39,015 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:39,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1992008612, now seen corresponding path program 1 times [2020-12-22 15:01:39,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:39,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073618782] [2020-12-22 15:01:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-12-22 15:01:39,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073618782] [2020-12-22 15:01:39,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:01:39,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:01:39,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131304522] [2020-12-22 15:01:39,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:01:39,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:39,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:01:39,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:01:39,762 INFO L87 Difference]: Start difference. First operand 70736 states and 79888 transitions. Second operand 3 states. [2020-12-22 15:01:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:45,147 INFO L93 Difference]: Finished difference Result 145714 states and 164625 transitions. [2020-12-22 15:01:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:01:45,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 414 [2020-12-22 15:01:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:45,260 INFO L225 Difference]: With dead ends: 145714 [2020-12-22 15:01:45,260 INFO L226 Difference]: Without dead ends: 74992 [2020-12-22 15:01:45,373 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 15:01:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74992 states. [2020-12-22 15:01:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74992 to 71344. [2020-12-22 15:01:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71344 states. [2020-12-22 15:01:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71344 states to 71344 states and 80496 transitions. [2020-12-22 15:01:49,476 INFO L78 Accepts]: Start accepts. Automaton has 71344 states and 80496 transitions. Word has length 414 [2020-12-22 15:01:49,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:49,476 INFO L481 AbstractCegarLoop]: Abstraction has 71344 states and 80496 transitions. [2020-12-22 15:01:49,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:01:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 71344 states and 80496 transitions. [2020-12-22 15:01:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-12-22 15:01:49,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:49,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:49,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 15:01:49,483 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:49,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash 128141571, now seen corresponding path program 1 times [2020-12-22 15:01:49,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:49,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284158370] [2020-12-22 15:01:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-22 15:01:50,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284158370] [2020-12-22 15:01:50,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862081928] [2020-12-22 15:01:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:52,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 4329 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:01:52,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:01:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-12-22 15:01:53,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:01:53,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:01:53,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576503532] [2020-12-22 15:01:53,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:01:53,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:53,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:01:53,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:53,791 INFO L87 Difference]: Start difference. First operand 71344 states and 80496 transitions. Second operand 3 states. [2020-12-22 15:02:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:01,861 INFO L93 Difference]: Finished difference Result 205388 states and 232554 transitions. [2020-12-22 15:02:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:02:01,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 428 [2020-12-22 15:02:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:02,111 INFO L225 Difference]: With dead ends: 205388 [2020-12-22 15:02:02,111 INFO L226 Difference]: Without dead ends: 134058 [2020-12-22 15:02:02,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:02:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134058 states. [2020-12-22 15:02:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134058 to 134042. [2020-12-22 15:02:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134042 states. [2020-12-22 15:02:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134042 states to 134042 states and 150813 transitions. [2020-12-22 15:02:09,906 INFO L78 Accepts]: Start accepts. Automaton has 134042 states and 150813 transitions. Word has length 428 [2020-12-22 15:02:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:02:09,907 INFO L481 AbstractCegarLoop]: Abstraction has 134042 states and 150813 transitions. [2020-12-22 15:02:09,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:02:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 134042 states and 150813 transitions. [2020-12-22 15:02:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-12-22 15:02:09,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:02:09,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:02:10,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 15:02:10,117 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:02:10,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:02:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash 655286471, now seen corresponding path program 1 times [2020-12-22 15:02:10,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:02:10,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643057200] [2020-12-22 15:02:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:02:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:02:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-22 15:02:11,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643057200] [2020-12-22 15:02:11,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218491978] [2020-12-22 15:02:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:02:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:02:13,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 4329 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 15:02:13,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:02:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-22 15:02:14,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:02:14,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2020-12-22 15:02:14,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461078816] [2020-12-22 15:02:14,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 15:02:14,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:02:14,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 15:02:14,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:02:14,302 INFO L87 Difference]: Start difference. First operand 134042 states and 150813 transitions. Second operand 8 states. [2020-12-22 15:02:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:26,249 INFO L93 Difference]: Finished difference Result 288198 states and 323435 transitions. [2020-12-22 15:02:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 15:02:26,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 428 [2020-12-22 15:02:26,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:26,524 INFO L225 Difference]: With dead ends: 288198 [2020-12-22 15:02:26,525 INFO L226 Difference]: Without dead ends: 154170 [2020-12-22 15:02:26,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:02:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154170 states. [2020-12-22 15:02:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154170 to 144954. [2020-12-22 15:02:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144954 states. [2020-12-22 15:02:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144954 states to 144954 states and 161725 transitions. [2020-12-22 15:02:37,925 INFO L78 Accepts]: Start accepts. Automaton has 144954 states and 161725 transitions. Word has length 428 [2020-12-22 15:02:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:02:37,925 INFO L481 AbstractCegarLoop]: Abstraction has 144954 states and 161725 transitions. [2020-12-22 15:02:37,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 15:02:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 144954 states and 161725 transitions. [2020-12-22 15:02:37,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-12-22 15:02:37,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:02:37,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:02:38,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 15:02:38,140 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:02:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:02:38,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1422776455, now seen corresponding path program 2 times [2020-12-22 15:02:38,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:02:38,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464059762] [2020-12-22 15:02:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:02:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:02:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-12-22 15:02:39,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464059762] [2020-12-22 15:02:39,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:02:39,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:02:39,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999146857] [2020-12-22 15:02:39,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:02:39,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:02:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:02:39,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:02:39,196 INFO L87 Difference]: Start difference. First operand 144954 states and 161725 transitions. Second operand 4 states. [2020-12-22 15:02:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:50,833 INFO L93 Difference]: Finished difference Result 315094 states and 350315 transitions. [2020-12-22 15:02:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:02:50,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 445 [2020-12-22 15:02:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:51,197 INFO L225 Difference]: With dead ends: 315094 [2020-12-22 15:02:51,197 INFO L226 Difference]: Without dead ends: 170154 [2020-12-22 15:02:51,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:02:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170154 states. [2020-12-22 15:03:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170154 to 158634. [2020-12-22 15:03:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158634 states. [2020-12-22 15:03:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158634 states to 158634 states and 175405 transitions. [2020-12-22 15:03:01,224 INFO L78 Accepts]: Start accepts. Automaton has 158634 states and 175405 transitions. Word has length 445 [2020-12-22 15:03:01,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:01,225 INFO L481 AbstractCegarLoop]: Abstraction has 158634 states and 175405 transitions. [2020-12-22 15:03:01,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:03:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 158634 states and 175405 transitions. [2020-12-22 15:03:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-12-22 15:03:01,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:01,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:03:01,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 15:03:01,234 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:01,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1283305589, now seen corresponding path program 1 times [2020-12-22 15:03:01,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:01,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637502245] [2020-12-22 15:03:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-12-22 15:03:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637502245] [2020-12-22 15:03:02,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958026143] [2020-12-22 15:03:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:03:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:03:04,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 4498 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 15:03:04,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:03:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-12-22 15:03:05,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:03:05,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 15:03:05,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263005516] [2020-12-22 15:03:05,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 15:03:05,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:03:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 15:03:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:03:05,428 INFO L87 Difference]: Start difference. First operand 158634 states and 175405 transitions. Second operand 8 states.