/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:55:04,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:55:04,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:55:04,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:55:04,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:55:04,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:55:04,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:55:04,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:55:04,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:55:04,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:55:04,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:55:04,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:55:04,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:55:04,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:55:04,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:55:04,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:55:04,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:55:04,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:55:04,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:55:04,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:55:04,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:55:04,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:55:04,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:55:04,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:55:04,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:55:04,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:55:04,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:55:04,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:55:04,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:55:04,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:55:04,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:55:04,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:55:04,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:55:04,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:55:04,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:55:04,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:55:04,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:55:04,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:55:04,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:55:04,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:55:04,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:55:04,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:55:04,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:55:04,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:55:04,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:55:04,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:55:04,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:55:04,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:55:04,994 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:55:04,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:55:04,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:55:04,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:55:04,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:55:04,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:55:04,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:55:04,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:55:04,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:55:04,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:55:04,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:55:04,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:55:04,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:55:04,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:55:04,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:55:04,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:55:04,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:55:04,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:55:04,998 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:55:04,998 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:55:05,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:55:05,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:55:05,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:55:05,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:55:05,210 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:55:05,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2022-01-10 17:55:05,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/117ac4e8b/dded7f03c83543dc9ffe8df743012c4e/FLAG60b45949e [2022-01-10 17:55:05,724 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:55:05,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2022-01-10 17:55:05,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/117ac4e8b/dded7f03c83543dc9ffe8df743012c4e/FLAG60b45949e [2022-01-10 17:55:06,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/117ac4e8b/dded7f03c83543dc9ffe8df743012c4e [2022-01-10 17:55:06,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:55:06,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:55:06,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:55:06,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:55:06,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:55:06,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:06,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c225bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06, skipping insertion in model container [2022-01-10 17:55:06,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:06,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:55:06,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:55:06,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 17:55:06,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:55:06,681 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:55:06,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:55:06,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 17:55:06,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:55:06,760 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:55:06,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 17:55:06,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:55:06,836 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:55:06,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06 WrapperNode [2022-01-10 17:55:06,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:55:06,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:55:06,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:55:06,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:55:06,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:06,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,060 INFO L137 Inliner]: procedures = 99, calls = 349, calls flagged for inlining = 201, calls inlined = 604, statements flattened = 18167 [2022-01-10 17:55:07,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:55:07,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:55:07,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:55:07,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:55:07,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:55:07,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:55:07,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:55:07,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:55:07,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (1/1) ... [2022-01-10 17:55:07,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:55:07,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:55:07,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 17:55:07,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 17:55:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:55:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:55:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:55:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:55:07,583 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:55:07,584 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:55:13,625 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:55:13,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:55:13,662 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:55:13,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:55:13 BoogieIcfgContainer [2022-01-10 17:55:13,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:55:13,669 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:55:13,669 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:55:13,670 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:55:13,672 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:55:13" (1/1) ... [2022-01-10 17:55:14,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:55:14 BasicIcfg [2022-01-10 17:55:14,765 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:55:14,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:55:14,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:55:14,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:55:14,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:55:06" (1/4) ... [2022-01-10 17:55:14,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379439f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:55:14, skipping insertion in model container [2022-01-10 17:55:14,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:06" (2/4) ... [2022-01-10 17:55:14,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379439f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:55:14, skipping insertion in model container [2022-01-10 17:55:14,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:55:13" (3/4) ... [2022-01-10 17:55:14,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379439f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:55:14, skipping insertion in model container [2022-01-10 17:55:14,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:55:14" (4/4) ... [2022-01-10 17:55:14,771 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.cTransformedIcfg [2022-01-10 17:55:14,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:55:14,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:55:14,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:55:14,841 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:55:14,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:55:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 5097 states, 5091 states have (on average 1.864073855824003) internal successors, (9490), 5096 states have internal predecessors, (9490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:55:14,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:14,944 INFO L514 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] [2022-01-10 17:55:14,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:14,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash -868761367, now seen corresponding path program 1 times [2022-01-10 17:55:14,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:14,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096546699] [2022-01-10 17:55:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:14,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:15,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:15,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096546699] [2022-01-10 17:55:15,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096546699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:15,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:15,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:15,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740639651] [2022-01-10 17:55:15,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:15,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:15,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:15,316 INFO L87 Difference]: Start difference. First operand has 5097 states, 5091 states have (on average 1.864073855824003) internal successors, (9490), 5096 states have internal predecessors, (9490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:15,721 INFO L93 Difference]: Finished difference Result 15196 states and 28310 transitions. [2022-01-10 17:55:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:15,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-10 17:55:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:15,775 INFO L225 Difference]: With dead ends: 15196 [2022-01-10 17:55:15,775 INFO L226 Difference]: Without dead ends: 10101 [2022-01-10 17:55:15,791 INFO L932 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 [2022-01-10 17:55:15,796 INFO L933 BasicCegarLoop]: 18815 mSDtfsCounter, 9451 mSDsluCounter, 9357 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9451 SdHoareTripleChecker+Valid, 28172 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:15,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9451 Valid, 28172 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10101 states. [2022-01-10 17:55:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10101 to 5086. [2022-01-10 17:55:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8630190907301711) internal successors, (9466), 5085 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9466 transitions. [2022-01-10 17:55:15,986 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9466 transitions. Word has length 46 [2022-01-10 17:55:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:15,987 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9466 transitions. [2022-01-10 17:55:15,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9466 transitions. [2022-01-10 17:55:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 17:55:15,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:15,991 INFO L514 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] [2022-01-10 17:55:15,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:55:15,994 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash 166297039, now seen corresponding path program 1 times [2022-01-10 17:55:15,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:15,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524331166] [2022-01-10 17:55:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:15,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:16,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:16,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524331166] [2022-01-10 17:55:16,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524331166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:16,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:16,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:16,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494030848] [2022-01-10 17:55:16,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:16,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:16,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:16,120 INFO L87 Difference]: Start difference. First operand 5086 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:16,396 INFO L93 Difference]: Finished difference Result 15101 states and 28118 transitions. [2022-01-10 17:55:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:16,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 17:55:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:16,429 INFO L225 Difference]: With dead ends: 15101 [2022-01-10 17:55:16,429 INFO L226 Difference]: Without dead ends: 10065 [2022-01-10 17:55:16,440 INFO L932 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 [2022-01-10 17:55:16,441 INFO L933 BasicCegarLoop]: 18678 mSDtfsCounter, 9353 mSDsluCounter, 9297 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9353 SdHoareTripleChecker+Valid, 27975 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:16,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9353 Valid, 27975 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-01-10 17:55:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 5086. [2022-01-10 17:55:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8580987994489273) internal successors, (9441), 5085 states have internal predecessors, (9441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9441 transitions. [2022-01-10 17:55:16,699 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9441 transitions. Word has length 53 [2022-01-10 17:55:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:16,699 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9441 transitions. [2022-01-10 17:55:16,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9441 transitions. [2022-01-10 17:55:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:55:16,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:16,701 INFO L514 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] [2022-01-10 17:55:16,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:55:16,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 693565464, now seen corresponding path program 1 times [2022-01-10 17:55:16,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:16,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5620370] [2022-01-10 17:55:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:16,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:16,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:16,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5620370] [2022-01-10 17:55:16,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5620370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:16,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:16,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:16,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628489990] [2022-01-10 17:55:16,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:16,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:16,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:16,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:16,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:16,785 INFO L87 Difference]: Start difference. First operand 5086 states and 9441 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:17,014 INFO L93 Difference]: Finished difference Result 10101 states and 18784 transitions. [2022-01-10 17:55:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:17,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 17:55:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:17,039 INFO L225 Difference]: With dead ends: 10101 [2022-01-10 17:55:17,040 INFO L226 Difference]: Without dead ends: 5086 [2022-01-10 17:55:17,047 INFO L932 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 [2022-01-10 17:55:17,048 INFO L933 BasicCegarLoop]: 9422 mSDtfsCounter, 9430 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9430 SdHoareTripleChecker+Valid, 9429 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:17,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9430 Valid, 9429 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-01-10 17:55:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5086. [2022-01-10 17:55:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8577051761464278) internal successors, (9439), 5085 states have internal predecessors, (9439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9439 transitions. [2022-01-10 17:55:17,182 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9439 transitions. Word has length 56 [2022-01-10 17:55:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:17,182 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9439 transitions. [2022-01-10 17:55:17,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9439 transitions. [2022-01-10 17:55:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:55:17,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:17,185 INFO L514 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] [2022-01-10 17:55:17,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:55:17,185 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1150088258, now seen corresponding path program 1 times [2022-01-10 17:55:17,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:17,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621153938] [2022-01-10 17:55:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:17,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:17,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:17,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621153938] [2022-01-10 17:55:17,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621153938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:17,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:17,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:17,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068437978] [2022-01-10 17:55:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:17,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:17,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:17,269 INFO L87 Difference]: Start difference. First operand 5086 states and 9439 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:17,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:17,436 INFO L93 Difference]: Finished difference Result 10065 states and 18711 transitions. [2022-01-10 17:55:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:17,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 17:55:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:17,447 INFO L225 Difference]: With dead ends: 10065 [2022-01-10 17:55:17,447 INFO L226 Difference]: Without dead ends: 5086 [2022-01-10 17:55:17,455 INFO L932 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 [2022-01-10 17:55:17,463 INFO L933 BasicCegarLoop]: 9344 mSDtfsCounter, 9411 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9411 SdHoareTripleChecker+Valid, 9359 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:17,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9411 Valid, 9359 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-01-10 17:55:17,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5086. [2022-01-10 17:55:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5081 states have (on average 1.8557370596339304) internal successors, (9429), 5085 states have internal predecessors, (9429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 9429 transitions. [2022-01-10 17:55:17,606 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 9429 transitions. Word has length 58 [2022-01-10 17:55:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:17,608 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 9429 transitions. [2022-01-10 17:55:17,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 9429 transitions. [2022-01-10 17:55:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 17:55:17,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:17,609 INFO L514 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] [2022-01-10 17:55:17,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:55:17,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:17,610 INFO L85 PathProgramCache]: Analyzing trace with hash 89947444, now seen corresponding path program 1 times [2022-01-10 17:55:17,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:17,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6442668] [2022-01-10 17:55:17,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:17,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:17,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:17,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6442668] [2022-01-10 17:55:17,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6442668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:17,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:17,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:17,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888190133] [2022-01-10 17:55:17,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:17,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:17,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:17,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:17,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:17,675 INFO L87 Difference]: Start difference. First operand 5086 states and 9429 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:17,838 INFO L93 Difference]: Finished difference Result 12633 states and 23476 transitions. [2022-01-10 17:55:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:17,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 17:55:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:17,858 INFO L225 Difference]: With dead ends: 12633 [2022-01-10 17:55:17,858 INFO L226 Difference]: Without dead ends: 10098 [2022-01-10 17:55:17,866 INFO L932 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 [2022-01-10 17:55:17,868 INFO L933 BasicCegarLoop]: 14102 mSDtfsCounter, 9407 mSDsluCounter, 9337 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9407 SdHoareTripleChecker+Valid, 23439 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:17,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9407 Valid, 23439 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10098 states. [2022-01-10 17:55:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10098 to 10098. [2022-01-10 17:55:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10098 states, 10093 states have (on average 1.8592093530169425) internal successors, (18765), 10097 states have internal predecessors, (18765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10098 states to 10098 states and 18765 transitions. [2022-01-10 17:55:18,136 INFO L78 Accepts]: Start accepts. Automaton has 10098 states and 18765 transitions. Word has length 60 [2022-01-10 17:55:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:18,137 INFO L470 AbstractCegarLoop]: Abstraction has 10098 states and 18765 transitions. [2022-01-10 17:55:18,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 10098 states and 18765 transitions. [2022-01-10 17:55:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:55:18,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:18,138 INFO L514 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] [2022-01-10 17:55:18,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:55:18,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:18,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:18,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1521299150, now seen corresponding path program 1 times [2022-01-10 17:55:18,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:18,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867360163] [2022-01-10 17:55:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:18,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:18,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867360163] [2022-01-10 17:55:18,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867360163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:18,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:18,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:18,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685030565] [2022-01-10 17:55:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:18,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:18,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:18,202 INFO L87 Difference]: Start difference. First operand 10098 states and 18765 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:18,420 INFO L93 Difference]: Finished difference Result 25110 states and 46726 transitions. [2022-01-10 17:55:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:18,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:55:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:18,464 INFO L225 Difference]: With dead ends: 25110 [2022-01-10 17:55:18,464 INFO L226 Difference]: Without dead ends: 20064 [2022-01-10 17:55:18,477 INFO L932 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 [2022-01-10 17:55:18,478 INFO L933 BasicCegarLoop]: 9426 mSDtfsCounter, 9373 mSDsluCounter, 9340 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9373 SdHoareTripleChecker+Valid, 18766 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:18,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9373 Valid, 18766 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20064 states. [2022-01-10 17:55:18,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20064 to 20062. [2022-01-10 17:55:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20062 states, 20057 states have (on average 1.8614448820860547) internal successors, (37335), 20061 states have internal predecessors, (37335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20062 states to 20062 states and 37335 transitions. [2022-01-10 17:55:18,929 INFO L78 Accepts]: Start accepts. Automaton has 20062 states and 37335 transitions. Word has length 61 [2022-01-10 17:55:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:18,929 INFO L470 AbstractCegarLoop]: Abstraction has 20062 states and 37335 transitions. [2022-01-10 17:55:18,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 20062 states and 37335 transitions. [2022-01-10 17:55:18,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:55:18,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:18,932 INFO L514 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] [2022-01-10 17:55:18,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:55:18,932 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:18,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1204405874, now seen corresponding path program 1 times [2022-01-10 17:55:18,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:18,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344550151] [2022-01-10 17:55:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:18,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:19,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:19,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344550151] [2022-01-10 17:55:19,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344550151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:19,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:19,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:55:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133773227] [2022-01-10 17:55:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:19,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:19,017 INFO L87 Difference]: Start difference. First operand 20062 states and 37335 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:20,548 INFO L93 Difference]: Finished difference Result 119588 states and 222805 transitions. [2022-01-10 17:55:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:55:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:55:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:20,937 INFO L225 Difference]: With dead ends: 119588 [2022-01-10 17:55:20,938 INFO L226 Difference]: Without dead ends: 99555 [2022-01-10 17:55:20,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:55:20,986 INFO L933 BasicCegarLoop]: 37263 mSDtfsCounter, 27988 mSDsluCounter, 46588 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27988 SdHoareTripleChecker+Valid, 83851 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:20,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27988 Valid, 83851 Invalid, 65 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99555 states. [2022-01-10 17:55:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99555 to 20050. [2022-01-10 17:55:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20050 states, 20045 states have (on average 1.8617610376652531) internal successors, (37319), 20049 states have internal predecessors, (37319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20050 states to 20050 states and 37319 transitions. [2022-01-10 17:55:22,076 INFO L78 Accepts]: Start accepts. Automaton has 20050 states and 37319 transitions. Word has length 61 [2022-01-10 17:55:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:22,077 INFO L470 AbstractCegarLoop]: Abstraction has 20050 states and 37319 transitions. [2022-01-10 17:55:22,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 20050 states and 37319 transitions. [2022-01-10 17:55:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 17:55:22,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:22,080 INFO L514 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] [2022-01-10 17:55:22,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:55:22,080 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:22,081 INFO L85 PathProgramCache]: Analyzing trace with hash -66538235, now seen corresponding path program 1 times [2022-01-10 17:55:22,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:22,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078501243] [2022-01-10 17:55:22,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:22,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:22,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:22,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078501243] [2022-01-10 17:55:22,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078501243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:22,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:22,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:22,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207613898] [2022-01-10 17:55:22,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:22,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:22,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:22,133 INFO L87 Difference]: Start difference. First operand 20050 states and 37319 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:23,388 INFO L93 Difference]: Finished difference Result 79912 states and 148826 transitions. [2022-01-10 17:55:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:55:23,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 17:55:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:23,490 INFO L225 Difference]: With dead ends: 79912 [2022-01-10 17:55:23,490 INFO L226 Difference]: Without dead ends: 59885 [2022-01-10 17:55:23,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:23,523 INFO L933 BasicCegarLoop]: 9421 mSDtfsCounter, 28037 mSDsluCounter, 27987 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28037 SdHoareTripleChecker+Valid, 37408 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:23,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28037 Valid, 37408 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59885 states. [2022-01-10 17:55:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59885 to 20058. [2022-01-10 17:55:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20058 states, 20053 states have (on average 1.8612676407520072) internal successors, (37324), 20057 states have internal predecessors, (37324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20058 states to 20058 states and 37324 transitions. [2022-01-10 17:55:24,362 INFO L78 Accepts]: Start accepts. Automaton has 20058 states and 37324 transitions. Word has length 63 [2022-01-10 17:55:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:24,363 INFO L470 AbstractCegarLoop]: Abstraction has 20058 states and 37324 transitions. [2022-01-10 17:55:24,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20058 states and 37324 transitions. [2022-01-10 17:55:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 17:55:24,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:24,366 INFO L514 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] [2022-01-10 17:55:24,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:55:24,366 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:24,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:24,366 INFO L85 PathProgramCache]: Analyzing trace with hash -457230197, now seen corresponding path program 1 times [2022-01-10 17:55:24,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:24,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72530150] [2022-01-10 17:55:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:24,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:24,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:24,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72530150] [2022-01-10 17:55:24,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72530150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:24,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:24,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:55:24,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040765443] [2022-01-10 17:55:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:24,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:55:24,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:55:24,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:55:24,467 INFO L87 Difference]: Start difference. First operand 20058 states and 37324 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:26,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:26,593 INFO L93 Difference]: Finished difference Result 99717 states and 185747 transitions. [2022-01-10 17:55:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:55:26,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 17:55:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:26,713 INFO L225 Difference]: With dead ends: 99717 [2022-01-10 17:55:26,714 INFO L226 Difference]: Without dead ends: 79675 [2022-01-10 17:55:26,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:55:26,737 INFO L933 BasicCegarLoop]: 37231 mSDtfsCounter, 37344 mSDsluCounter, 37209 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37344 SdHoareTripleChecker+Valid, 74440 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:26,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37344 Valid, 74440 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79675 states. [2022-01-10 17:55:27,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79675 to 20050. [2022-01-10 17:55:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20050 states, 20045 states have (on average 1.8613120478922425) internal successors, (37310), 20049 states have internal predecessors, (37310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20050 states to 20050 states and 37310 transitions. [2022-01-10 17:55:27,769 INFO L78 Accepts]: Start accepts. Automaton has 20050 states and 37310 transitions. Word has length 64 [2022-01-10 17:55:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:27,769 INFO L470 AbstractCegarLoop]: Abstraction has 20050 states and 37310 transitions. [2022-01-10 17:55:27,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 20050 states and 37310 transitions. [2022-01-10 17:55:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:55:27,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:27,775 INFO L514 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] [2022-01-10 17:55:27,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:55:27,776 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 638777277, now seen corresponding path program 1 times [2022-01-10 17:55:27,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:27,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184916835] [2022-01-10 17:55:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:27,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:27,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:27,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184916835] [2022-01-10 17:55:27,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184916835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:27,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:27,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:55:27,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516352524] [2022-01-10 17:55:27,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:27,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:27,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:27,841 INFO L87 Difference]: Start difference. First operand 20050 states and 37310 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:29,545 INFO L93 Difference]: Finished difference Result 79717 states and 148491 transitions. [2022-01-10 17:55:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:55:29,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 17:55:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:29,642 INFO L225 Difference]: With dead ends: 79717 [2022-01-10 17:55:29,642 INFO L226 Difference]: Without dead ends: 59714 [2022-01-10 17:55:29,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:55:29,663 INFO L933 BasicCegarLoop]: 9358 mSDtfsCounter, 46614 mSDsluCounter, 27820 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46614 SdHoareTripleChecker+Valid, 37178 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:29,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46614 Valid, 37178 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59714 states. [2022-01-10 17:55:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59714 to 20076. [2022-01-10 17:55:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20076 states, 20071 states have (on average 1.8607941806586616) internal successors, (37348), 20075 states have internal predecessors, (37348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20076 states to 20076 states and 37348 transitions. [2022-01-10 17:55:30,517 INFO L78 Accepts]: Start accepts. Automaton has 20076 states and 37348 transitions. Word has length 65 [2022-01-10 17:55:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:30,517 INFO L470 AbstractCegarLoop]: Abstraction has 20076 states and 37348 transitions. [2022-01-10 17:55:30,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 20076 states and 37348 transitions. [2022-01-10 17:55:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 17:55:30,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:30,522 INFO L514 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] [2022-01-10 17:55:30,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:55:30,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1865341197, now seen corresponding path program 1 times [2022-01-10 17:55:30,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:30,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334978927] [2022-01-10 17:55:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:30,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:30,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:30,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334978927] [2022-01-10 17:55:30,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334978927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:30,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:30,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:30,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529233880] [2022-01-10 17:55:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:30,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:30,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:30,579 INFO L87 Difference]: Start difference. First operand 20076 states and 37348 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:31,551 INFO L93 Difference]: Finished difference Result 44938 states and 83669 transitions. [2022-01-10 17:55:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:55:31,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 17:55:31,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:31,599 INFO L225 Difference]: With dead ends: 44938 [2022-01-10 17:55:31,599 INFO L226 Difference]: Without dead ends: 29903 [2022-01-10 17:55:31,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:31,622 INFO L933 BasicCegarLoop]: 9351 mSDtfsCounter, 27859 mSDsluCounter, 9339 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27859 SdHoareTripleChecker+Valid, 18690 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:31,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27859 Valid, 18690 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:31,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29903 states. [2022-01-10 17:55:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29903 to 19996. [2022-01-10 17:55:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19996 states, 19991 states have (on average 1.861487669451253) internal successors, (37213), 19995 states have internal predecessors, (37213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19996 states to 19996 states and 37213 transitions. [2022-01-10 17:55:32,448 INFO L78 Accepts]: Start accepts. Automaton has 19996 states and 37213 transitions. Word has length 67 [2022-01-10 17:55:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:32,448 INFO L470 AbstractCegarLoop]: Abstraction has 19996 states and 37213 transitions. [2022-01-10 17:55:32,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:32,448 INFO L276 IsEmpty]: Start isEmpty. Operand 19996 states and 37213 transitions. [2022-01-10 17:55:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 17:55:32,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:32,451 INFO L514 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] [2022-01-10 17:55:32,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:55:32,451 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash 399243244, now seen corresponding path program 1 times [2022-01-10 17:55:32,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:32,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159590858] [2022-01-10 17:55:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:32,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:32,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:32,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159590858] [2022-01-10 17:55:32,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159590858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:32,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:32,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:55:32,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470339744] [2022-01-10 17:55:32,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:32,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:32,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:32,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:32,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:32,518 INFO L87 Difference]: Start difference. First operand 19996 states and 37213 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:32,905 INFO L93 Difference]: Finished difference Result 29939 states and 55735 transitions. [2022-01-10 17:55:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:32,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 17:55:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:32,921 INFO L225 Difference]: With dead ends: 29939 [2022-01-10 17:55:32,921 INFO L226 Difference]: Without dead ends: 10044 [2022-01-10 17:55:32,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:32,936 INFO L933 BasicCegarLoop]: 9357 mSDtfsCounter, 9314 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9314 SdHoareTripleChecker+Valid, 9435 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:32,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9314 Valid, 9435 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2022-01-10 17:55:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 10044. [2022-01-10 17:55:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10044 states, 10040 states have (on average 1.8593625498007968) internal successors, (18668), 10043 states have internal predecessors, (18668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10044 states to 10044 states and 18668 transitions. [2022-01-10 17:55:33,497 INFO L78 Accepts]: Start accepts. Automaton has 10044 states and 18668 transitions. Word has length 68 [2022-01-10 17:55:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:33,497 INFO L470 AbstractCegarLoop]: Abstraction has 10044 states and 18668 transitions. [2022-01-10 17:55:33,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10044 states and 18668 transitions. [2022-01-10 17:55:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:55:33,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:33,499 INFO L514 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] [2022-01-10 17:55:33,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:55:33,499 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1262726759, now seen corresponding path program 1 times [2022-01-10 17:55:33,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:33,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844646392] [2022-01-10 17:55:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:33,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:33,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:33,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844646392] [2022-01-10 17:55:33,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844646392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:33,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:33,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:33,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989249297] [2022-01-10 17:55:33,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:33,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:33,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:33,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:33,546 INFO L87 Difference]: Start difference. First operand 10044 states and 18668 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:33,959 INFO L93 Difference]: Finished difference Result 19975 states and 37170 transitions. [2022-01-10 17:55:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:55:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 17:55:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:33,973 INFO L225 Difference]: With dead ends: 19975 [2022-01-10 17:55:33,973 INFO L226 Difference]: Without dead ends: 10032 [2022-01-10 17:55:33,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:33,982 INFO L933 BasicCegarLoop]: 9339 mSDtfsCounter, 18596 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18596 SdHoareTripleChecker+Valid, 9430 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:33,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18596 Valid, 9430 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2022-01-10 17:55:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 10032. [2022-01-10 17:55:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10032 states, 10028 states have (on average 1.8593936976465895) internal successors, (18646), 10031 states have internal predecessors, (18646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 18646 transitions. [2022-01-10 17:55:34,380 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 18646 transitions. Word has length 70 [2022-01-10 17:55:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:34,380 INFO L470 AbstractCegarLoop]: Abstraction has 10032 states and 18646 transitions. [2022-01-10 17:55:34,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 18646 transitions. [2022-01-10 17:55:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:55:34,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:34,382 INFO L514 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] [2022-01-10 17:55:34,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:55:34,382 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:34,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:34,383 INFO L85 PathProgramCache]: Analyzing trace with hash 836222083, now seen corresponding path program 1 times [2022-01-10 17:55:34,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:34,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589336587] [2022-01-10 17:55:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:34,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:34,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:34,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589336587] [2022-01-10 17:55:34,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589336587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:34,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:34,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:55:34,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687687449] [2022-01-10 17:55:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:34,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:55:34,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:55:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:55:34,441 INFO L87 Difference]: Start difference. First operand 10032 states and 18646 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:34,854 INFO L93 Difference]: Finished difference Result 20001 states and 37200 transitions. [2022-01-10 17:55:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:55:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 17:55:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:34,869 INFO L225 Difference]: With dead ends: 20001 [2022-01-10 17:55:34,869 INFO L226 Difference]: Without dead ends: 10094 [2022-01-10 17:55:34,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:34,880 INFO L933 BasicCegarLoop]: 9365 mSDtfsCounter, 18630 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18630 SdHoareTripleChecker+Valid, 9514 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:34,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18630 Valid, 9514 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2022-01-10 17:55:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 10032. [2022-01-10 17:55:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10032 states, 10028 states have (on average 1.8591942560829677) internal successors, (18644), 10031 states have internal predecessors, (18644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 18644 transitions. [2022-01-10 17:55:35,322 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 18644 transitions. Word has length 70 [2022-01-10 17:55:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 10032 states and 18644 transitions. [2022-01-10 17:55:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 18644 transitions. [2022-01-10 17:55:35,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:55:35,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:35,330 INFO L514 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] [2022-01-10 17:55:35,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:55:35,330 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:35,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:35,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1091337024, now seen corresponding path program 1 times [2022-01-10 17:55:35,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:35,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601460217] [2022-01-10 17:55:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:35,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:35,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:35,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601460217] [2022-01-10 17:55:35,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601460217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:35,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:35,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:55:35,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632099463] [2022-01-10 17:55:35,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:35,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:55:35,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:55:35,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:55:35,399 INFO L87 Difference]: Start difference. First operand 10032 states and 18644 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:36,649 INFO L93 Difference]: Finished difference Result 39841 states and 74162 transitions. [2022-01-10 17:55:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:55:36,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:55:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:36,704 INFO L225 Difference]: With dead ends: 39841 [2022-01-10 17:55:36,704 INFO L226 Difference]: Without dead ends: 29934 [2022-01-10 17:55:36,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:55:36,722 INFO L933 BasicCegarLoop]: 18606 mSDtfsCounter, 46439 mSDsluCounter, 27941 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46439 SdHoareTripleChecker+Valid, 46547 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:36,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46439 Valid, 46547 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:36,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29934 states. [2022-01-10 17:55:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29934 to 10052. [2022-01-10 17:55:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10052 states, 10048 states have (on average 1.85828025477707) internal successors, (18672), 10051 states have internal predecessors, (18672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 18672 transitions. [2022-01-10 17:55:37,240 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 18672 transitions. Word has length 71 [2022-01-10 17:55:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:37,240 INFO L470 AbstractCegarLoop]: Abstraction has 10052 states and 18672 transitions. [2022-01-10 17:55:37,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 18672 transitions. [2022-01-10 17:55:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 17:55:37,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:37,242 INFO L514 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] [2022-01-10 17:55:37,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 17:55:37,242 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash -414862369, now seen corresponding path program 1 times [2022-01-10 17:55:37,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:37,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46389062] [2022-01-10 17:55:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:37,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:37,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:37,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46389062] [2022-01-10 17:55:37,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46389062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:37,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:37,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:55:37,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029843708] [2022-01-10 17:55:37,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:37,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:37,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:37,309 INFO L87 Difference]: Start difference. First operand 10052 states and 18672 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:37,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:37,799 INFO L93 Difference]: Finished difference Result 17615 states and 32721 transitions. [2022-01-10 17:55:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:55:37,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 17:55:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:37,812 INFO L225 Difference]: With dead ends: 17615 [2022-01-10 17:55:37,812 INFO L226 Difference]: Without dead ends: 10081 [2022-01-10 17:55:37,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:37,819 INFO L933 BasicCegarLoop]: 9313 mSDtfsCounter, 9368 mSDsluCounter, 18646 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9368 SdHoareTripleChecker+Valid, 27959 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:37,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9368 Valid, 27959 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2022-01-10 17:55:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 10049. [2022-01-10 17:55:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 10045 states have (on average 1.857740169238427) internal successors, (18661), 10048 states have internal predecessors, (18661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 18661 transitions. [2022-01-10 17:55:38,302 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 18661 transitions. Word has length 72 [2022-01-10 17:55:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:38,302 INFO L470 AbstractCegarLoop]: Abstraction has 10049 states and 18661 transitions. [2022-01-10 17:55:38,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 18661 transitions. [2022-01-10 17:55:38,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:55:38,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:38,304 INFO L514 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] [2022-01-10 17:55:38,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 17:55:38,304 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2850936, now seen corresponding path program 1 times [2022-01-10 17:55:38,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544649014] [2022-01-10 17:55:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:38,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:38,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:38,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544649014] [2022-01-10 17:55:38,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544649014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:38,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:38,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:38,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857935662] [2022-01-10 17:55:38,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:38,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:38,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:38,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:38,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:38,363 INFO L87 Difference]: Start difference. First operand 10049 states and 18661 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:40,683 INFO L93 Difference]: Finished difference Result 30008 states and 55713 transitions. [2022-01-10 17:55:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:55:40,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 17:55:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:40,716 INFO L225 Difference]: With dead ends: 30008 [2022-01-10 17:55:40,717 INFO L226 Difference]: Without dead ends: 23833 [2022-01-10 17:55:40,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:40,728 INFO L933 BasicCegarLoop]: 9098 mSDtfsCounter, 28704 mSDsluCounter, 31374 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28704 SdHoareTripleChecker+Valid, 40472 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:40,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28704 Valid, 40472 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 17:55:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23833 states. [2022-01-10 17:55:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23833 to 13889. [2022-01-10 17:55:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 13885 states have (on average 1.8397551314368024) internal successors, (25545), 13888 states have internal predecessors, (25545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 25545 transitions. [2022-01-10 17:55:41,374 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 25545 transitions. Word has length 73 [2022-01-10 17:55:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:41,375 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 25545 transitions. [2022-01-10 17:55:41,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:41,375 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 25545 transitions. [2022-01-10 17:55:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 17:55:41,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:41,377 INFO L514 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] [2022-01-10 17:55:41,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 17:55:41,377 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -513414314, now seen corresponding path program 1 times [2022-01-10 17:55:41,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:41,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205173889] [2022-01-10 17:55:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:41,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:41,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205173889] [2022-01-10 17:55:41,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205173889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:41,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:41,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:55:41,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418119675] [2022-01-10 17:55:41,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:41,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:41,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:41,498 INFO L87 Difference]: Start difference. First operand 13889 states and 25545 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:42,647 INFO L93 Difference]: Finished difference Result 35291 states and 65369 transitions. [2022-01-10 17:55:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:42,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 17:55:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:42,690 INFO L225 Difference]: With dead ends: 35291 [2022-01-10 17:55:42,690 INFO L226 Difference]: Without dead ends: 25894 [2022-01-10 17:55:42,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:42,707 INFO L933 BasicCegarLoop]: 8710 mSDtfsCounter, 8224 mSDsluCounter, 7823 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8224 SdHoareTripleChecker+Valid, 16533 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:42,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8224 Valid, 16533 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25894 states. [2022-01-10 17:55:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25894 to 19883. [2022-01-10 17:55:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19883 states, 19879 states have (on average 1.842798933547965) internal successors, (36633), 19882 states have internal predecessors, (36633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19883 states to 19883 states and 36633 transitions. [2022-01-10 17:55:43,736 INFO L78 Accepts]: Start accepts. Automaton has 19883 states and 36633 transitions. Word has length 74 [2022-01-10 17:55:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:43,736 INFO L470 AbstractCegarLoop]: Abstraction has 19883 states and 36633 transitions. [2022-01-10 17:55:43,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 19883 states and 36633 transitions. [2022-01-10 17:55:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 17:55:43,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:43,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:43,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 17:55:43,742 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash -170433745, now seen corresponding path program 1 times [2022-01-10 17:55:43,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:43,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599137730] [2022-01-10 17:55:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:43,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:43,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:43,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599137730] [2022-01-10 17:55:43,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599137730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:43,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:43,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:43,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396057003] [2022-01-10 17:55:43,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:43,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:43,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:43,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:43,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:43,796 INFO L87 Difference]: Start difference. First operand 19883 states and 36633 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:46,231 INFO L93 Difference]: Finished difference Result 55681 states and 102913 transitions. [2022-01-10 17:55:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:55:46,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-10 17:55:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:46,285 INFO L225 Difference]: With dead ends: 55681 [2022-01-10 17:55:46,286 INFO L226 Difference]: Without dead ends: 35972 [2022-01-10 17:55:46,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:46,313 INFO L933 BasicCegarLoop]: 8612 mSDtfsCounter, 23457 mSDsluCounter, 7716 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23457 SdHoareTripleChecker+Valid, 16328 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:46,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23457 Valid, 16328 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 17:55:46,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35972 states. [2022-01-10 17:55:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35972 to 19883. [2022-01-10 17:55:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19883 states, 19879 states have (on average 1.8307258916444489) internal successors, (36393), 19882 states have internal predecessors, (36393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19883 states to 19883 states and 36393 transitions. [2022-01-10 17:55:47,518 INFO L78 Accepts]: Start accepts. Automaton has 19883 states and 36393 transitions. Word has length 94 [2022-01-10 17:55:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:47,518 INFO L470 AbstractCegarLoop]: Abstraction has 19883 states and 36393 transitions. [2022-01-10 17:55:47,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 19883 states and 36393 transitions. [2022-01-10 17:55:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 17:55:47,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:47,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:47,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 17:55:47,524 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 802400270, now seen corresponding path program 1 times [2022-01-10 17:55:47,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:47,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363858874] [2022-01-10 17:55:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:47,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:47,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:47,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363858874] [2022-01-10 17:55:47,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363858874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:47,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:47,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:47,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527634109] [2022-01-10 17:55:47,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:47,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:47,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:47,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:47,587 INFO L87 Difference]: Start difference. First operand 19883 states and 36393 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:48,990 INFO L93 Difference]: Finished difference Result 39302 states and 71355 transitions. [2022-01-10 17:55:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:55:48,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-01-10 17:55:48,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:49,025 INFO L225 Difference]: With dead ends: 39302 [2022-01-10 17:55:49,026 INFO L226 Difference]: Without dead ends: 22305 [2022-01-10 17:55:49,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:49,045 INFO L933 BasicCegarLoop]: 10103 mSDtfsCounter, 15110 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15110 SdHoareTripleChecker+Valid, 20198 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:49,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15110 Valid, 20198 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:49,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2022-01-10 17:55:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 16973. [2022-01-10 17:55:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16973 states, 16969 states have (on average 1.8075903117449468) internal successors, (30673), 16972 states have internal predecessors, (30673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16973 states to 16973 states and 30673 transitions. [2022-01-10 17:55:50,120 INFO L78 Accepts]: Start accepts. Automaton has 16973 states and 30673 transitions. Word has length 102 [2022-01-10 17:55:50,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:50,120 INFO L470 AbstractCegarLoop]: Abstraction has 16973 states and 30673 transitions. [2022-01-10 17:55:50,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 16973 states and 30673 transitions. [2022-01-10 17:55:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 17:55:50,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:50,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:50,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 17:55:50,124 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash -804122619, now seen corresponding path program 1 times [2022-01-10 17:55:50,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:50,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812230220] [2022-01-10 17:55:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:50,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:50,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:50,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812230220] [2022-01-10 17:55:50,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812230220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:50,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:50,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:50,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852191114] [2022-01-10 17:55:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:50,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:50,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:50,168 INFO L87 Difference]: Start difference. First operand 16973 states and 30673 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:52,027 INFO L93 Difference]: Finished difference Result 37759 states and 68341 transitions. [2022-01-10 17:55:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:52,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-10 17:55:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:52,076 INFO L225 Difference]: With dead ends: 37759 [2022-01-10 17:55:52,077 INFO L226 Difference]: Without dead ends: 27276 [2022-01-10 17:55:52,095 INFO L932 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 [2022-01-10 17:55:52,096 INFO L933 BasicCegarLoop]: 11309 mSDtfsCounter, 6690 mSDsluCounter, 4624 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6690 SdHoareTripleChecker+Valid, 15933 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:52,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6690 Valid, 15933 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27276 states. [2022-01-10 17:55:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27276 to 27185. [2022-01-10 17:55:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27185 states, 27181 states have (on average 1.8083587800301681) internal successors, (49153), 27184 states have internal predecessors, (49153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27185 states to 27185 states and 49153 transitions. [2022-01-10 17:55:54,162 INFO L78 Accepts]: Start accepts. Automaton has 27185 states and 49153 transitions. Word has length 103 [2022-01-10 17:55:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:54,162 INFO L470 AbstractCegarLoop]: Abstraction has 27185 states and 49153 transitions. [2022-01-10 17:55:54,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 27185 states and 49153 transitions. [2022-01-10 17:55:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 17:55:54,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:54,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:54,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 17:55:54,166 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1900332260, now seen corresponding path program 1 times [2022-01-10 17:55:54,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:54,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33726386] [2022-01-10 17:55:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:54,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:54,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:54,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33726386] [2022-01-10 17:55:54,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33726386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:54,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:54,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:55:54,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238779041] [2022-01-10 17:55:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:54,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:55:54,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:55:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:55:54,226 INFO L87 Difference]: Start difference. First operand 27185 states and 49153 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)