/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_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:57:04,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:57:04,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:57:04,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:57:04,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:57:04,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:57:04,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:57:04,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:57:04,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:57:04,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:57:04,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:57:04,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:57:04,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:57:04,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:57:04,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:57:04,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:57:04,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:57:04,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:57:04,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:57:04,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:57:04,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:57:04,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:57:04,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:57:04,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:57:04,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:57:04,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:57:04,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:57:04,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:57:04,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:57:04,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:57:04,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:57:04,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:57:04,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:57:04,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:57:04,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:57:04,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:57:04,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:57:04,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:57:04,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:57:04,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:57:04,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:57:04,955 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 17:57:04,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:57:04,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:57:04,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:57:04,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:57:04,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:57:04,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:57:04,987 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:57:04,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:57:04,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:57:04,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:57:04,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:57:04,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:57:04,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:57:04,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:57:04,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:57:04,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:57:04,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:57:04,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:57:04,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:57:04,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:57:04,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:57:04,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:57:04,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:57:04,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:57:04,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:57:04,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:57:04,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:57:04,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:57:04,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:57:04,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:57:04,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:57:04,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:57:04,992 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:57:04,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:57:05,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:57:05,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:57:05,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:57:05,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:57:05,251 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:57:05,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product01.cil.c [2022-01-10 17:57:05,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ada29818/4f3148f1de3a4929a4d1945865110ee1/FLAG98222bd55 [2022-01-10 17:57:05,887 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:57:05,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product01.cil.c [2022-01-10 17:57:05,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ada29818/4f3148f1de3a4929a4d1945865110ee1/FLAG98222bd55 [2022-01-10 17:57:06,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ada29818/4f3148f1de3a4929a4d1945865110ee1 [2022-01-10 17:57:06,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:57:06,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:57:06,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:57:06,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:57:06,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:57:06,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:57:06" (1/1) ... [2022-01-10 17:57:06,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436bde7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:06, skipping insertion in model container [2022-01-10 17:57:06,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:57:06" (1/1) ... [2022-01-10 17:57:06,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:57:06,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:57:06,662 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_spec3_product01.cil.c[40412,40425] [2022-01-10 17:57:06,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:57:06,792 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:57:06,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:57:06,859 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_spec3_product01.cil.c[40412,40425] [2022-01-10 17:57:06,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:57:06,896 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:57:06,962 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_spec3_product01.cil.c[40412,40425] [2022-01-10 17:57:06,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:57:07,021 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:57:07,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07 WrapperNode [2022-01-10 17:57:07,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:57:07,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:57:07,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:57:07,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:57:07,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,296 INFO L137 Inliner]: procedures = 88, calls = 334, calls flagged for inlining = 187, calls inlined = 553, statements flattened = 19287 [2022-01-10 17:57:07,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:57:07,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:57:07,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:57:07,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:57:07,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:57:07,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:57:07,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:57:07,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:57:07,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (1/1) ... [2022-01-10 17:57:07,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:57:07,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:57:07,673 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 17:57:07,683 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 17:57:07,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:57:07,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:57:07,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:57:07,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:57:08,059 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:57:08,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:57:15,933 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:57:15,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:57:15,985 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:57:15,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:15 BoogieIcfgContainer [2022-01-10 17:57:15,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:57:15,996 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:57:15,996 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:57:15,998 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:57:16,001 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:15" (1/1) ... [2022-01-10 17:57:17,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:57:17 BasicIcfg [2022-01-10 17:57:17,274 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:57:17,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:57:17,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:57:17,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:57:17,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:57:06" (1/4) ... [2022-01-10 17:57:17,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121fda42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:57:17, skipping insertion in model container [2022-01-10 17:57:17,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:07" (2/4) ... [2022-01-10 17:57:17,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121fda42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:57:17, skipping insertion in model container [2022-01-10 17:57:17,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:15" (3/4) ... [2022-01-10 17:57:17,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121fda42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:57:17, skipping insertion in model container [2022-01-10 17:57:17,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:57:17" (4/4) ... [2022-01-10 17:57:17,281 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.cTransformedIcfg [2022-01-10 17:57:17,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:57:17,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-01-10 17:57:17,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:57:17,349 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 17:57:17,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-01-10 17:57:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 5733 states, 5722 states have (on average 1.8839566585110101) internal successors, (10780), 5732 states have internal predecessors, (10780), 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 17:57:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:57:17,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:17,547 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 17:57:17,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash -173812457, now seen corresponding path program 1 times [2022-01-10 17:57:17,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:17,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157625919] [2022-01-10 17:57:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:17,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:18,052 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 17:57:18,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:18,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157625919] [2022-01-10 17:57:18,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157625919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:18,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:18,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:57:18,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458478312] [2022-01-10 17:57:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:18,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:57:18,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:57:18,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:57:18,114 INFO L87 Difference]: Start difference. First operand has 5733 states, 5722 states have (on average 1.8839566585110101) internal successors, (10780), 5732 states have internal predecessors, (10780), 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 17:57:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:19,745 INFO L93 Difference]: Finished difference Result 14511 states and 27290 transitions. [2022-01-10 17:57:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:57:19,749 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 17:57:19,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:19,817 INFO L225 Difference]: With dead ends: 14511 [2022-01-10 17:57:19,818 INFO L226 Difference]: Without dead ends: 9662 [2022-01-10 17:57:19,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 17:57:19,840 INFO L933 BasicCegarLoop]: 17590 mSDtfsCounter, 9313 mSDsluCounter, 8111 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9313 SdHoareTripleChecker+Valid, 25701 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:19,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9313 Valid, 25701 Invalid, 1092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [224 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 17:57:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9662 states. [2022-01-10 17:57:20,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9662 to 9606. [2022-01-10 17:57:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 9596 states have (on average 1.861817423926636) internal successors, (17866), 9605 states have internal predecessors, (17866), 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 17:57:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 17866 transitions. [2022-01-10 17:57:20,346 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 17866 transitions. Word has length 46 [2022-01-10 17:57:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:20,346 INFO L470 AbstractCegarLoop]: Abstraction has 9606 states and 17866 transitions. [2022-01-10 17:57:20,347 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 17:57:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 17866 transitions. [2022-01-10 17:57:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:57:20,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:20,349 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] [2022-01-10 17:57:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:57:20,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash -152012858, now seen corresponding path program 1 times [2022-01-10 17:57:20,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:20,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806411171] [2022-01-10 17:57:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:20,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:20,476 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 17:57:20,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:20,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806411171] [2022-01-10 17:57:20,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806411171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:20,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:20,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:57:20,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023361464] [2022-01-10 17:57:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:20,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:57:20,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:57:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:57:20,485 INFO L87 Difference]: Start difference. First operand 9606 states and 17866 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 17:57:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:20,945 INFO L93 Difference]: Finished difference Result 18689 states and 34938 transitions. [2022-01-10 17:57:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:57:20,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2022-01-10 17:57:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:21,020 INFO L225 Difference]: With dead ends: 18689 [2022-01-10 17:57:21,020 INFO L226 Difference]: Without dead ends: 14122 [2022-01-10 17:57:21,036 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 17:57:21,038 INFO L933 BasicCegarLoop]: 12567 mSDtfsCounter, 10347 mSDsluCounter, 8451 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10347 SdHoareTripleChecker+Valid, 21018 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:21,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10347 Valid, 21018 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:57:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14122 states. [2022-01-10 17:57:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14122 to 14094. [2022-01-10 17:57:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14094 states, 14084 states have (on average 1.867722238000568) internal successors, (26305), 14093 states have internal predecessors, (26305), 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 17:57:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14094 states to 14094 states and 26305 transitions. [2022-01-10 17:57:21,573 INFO L78 Accepts]: Start accepts. Automaton has 14094 states and 26305 transitions. Word has length 47 [2022-01-10 17:57:21,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:21,576 INFO L470 AbstractCegarLoop]: Abstraction has 14094 states and 26305 transitions. [2022-01-10 17:57:21,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 17:57:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 14094 states and 26305 transitions. [2022-01-10 17:57:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:57:21,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:21,587 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] [2022-01-10 17:57:21,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:57:21,588 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash 735490823, now seen corresponding path program 1 times [2022-01-10 17:57:21,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:21,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046576150] [2022-01-10 17:57:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:21,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:21,701 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 17:57:21,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046576150] [2022-01-10 17:57:21,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046576150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:21,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:21,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:57:21,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608283820] [2022-01-10 17:57:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:21,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:57:21,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:57:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:57:21,704 INFO L87 Difference]: Start difference. First operand 14094 states and 26305 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 17:57:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:22,305 INFO L93 Difference]: Finished difference Result 40021 states and 74796 transitions. [2022-01-10 17:57:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:57:22,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2022-01-10 17:57:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:22,401 INFO L225 Difference]: With dead ends: 40021 [2022-01-10 17:57:22,401 INFO L226 Difference]: Without dead ends: 26969 [2022-01-10 17:57:22,424 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 17:57:22,429 INFO L933 BasicCegarLoop]: 10647 mSDtfsCounter, 9537 mSDsluCounter, 10369 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9537 SdHoareTripleChecker+Valid, 21016 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:22,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9537 Valid, 21016 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:57:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26969 states. [2022-01-10 17:57:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26969 to 26636. [2022-01-10 17:57:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26636 states, 26626 states have (on average 1.8702020581386614) internal successors, (49796), 26635 states have internal predecessors, (49796), 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 17:57:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26636 states to 26636 states and 49796 transitions. [2022-01-10 17:57:23,448 INFO L78 Accepts]: Start accepts. Automaton has 26636 states and 49796 transitions. Word has length 47 [2022-01-10 17:57:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:23,449 INFO L470 AbstractCegarLoop]: Abstraction has 26636 states and 49796 transitions. [2022-01-10 17:57:23,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 17:57:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 26636 states and 49796 transitions. [2022-01-10 17:57:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:57:23,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:23,471 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] [2022-01-10 17:57:23,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:57:23,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1916265490, now seen corresponding path program 1 times [2022-01-10 17:57:23,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:23,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572734184] [2022-01-10 17:57:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:23,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:23,548 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 17:57:23,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:23,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572734184] [2022-01-10 17:57:23,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572734184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:23,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:23,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:57:23,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615734346] [2022-01-10 17:57:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:23,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:57:23,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:57:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:57:23,550 INFO L87 Difference]: Start difference. First operand 26636 states and 49796 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 17:57:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:25,130 INFO L93 Difference]: Finished difference Result 106235 states and 198592 transitions. [2022-01-10 17:57:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:57:25,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2022-01-10 17:57:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:25,447 INFO L225 Difference]: With dead ends: 106235 [2022-01-10 17:57:25,447 INFO L226 Difference]: Without dead ends: 79626 [2022-01-10 17:57:25,514 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 17:57:25,520 INFO L933 BasicCegarLoop]: 20751 mSDtfsCounter, 30979 mSDsluCounter, 31156 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30979 SdHoareTripleChecker+Valid, 51907 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:25,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30979 Valid, 51907 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:57:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79626 states. [2022-01-10 17:57:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79626 to 26656. [2022-01-10 17:57:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26656 states, 26646 states have (on average 1.8695489003978083) internal successors, (49816), 26655 states have internal predecessors, (49816), 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 17:57:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26656 states to 26656 states and 49816 transitions. [2022-01-10 17:57:26,867 INFO L78 Accepts]: Start accepts. Automaton has 26656 states and 49816 transitions. Word has length 47 [2022-01-10 17:57:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:26,868 INFO L470 AbstractCegarLoop]: Abstraction has 26656 states and 49816 transitions. [2022-01-10 17:57:26,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 17:57:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 26656 states and 49816 transitions. [2022-01-10 17:57:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 17:57:26,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:26,871 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] [2022-01-10 17:57:26,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:57:26,871 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1926519794, now seen corresponding path program 1 times [2022-01-10 17:57:26,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:26,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190519761] [2022-01-10 17:57:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:26,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:26,948 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 17:57:26,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:26,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190519761] [2022-01-10 17:57:26,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190519761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:26,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:26,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:57:26,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928373337] [2022-01-10 17:57:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:26,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:57:26,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:26,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:57:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:57:26,950 INFO L87 Difference]: Start difference. First operand 26656 states and 49816 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 17:57:27,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:27,620 INFO L93 Difference]: Finished difference Result 53161 states and 99348 transitions. [2022-01-10 17:57:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:57:27,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-10 17:57:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:27,704 INFO L225 Difference]: With dead ends: 53161 [2022-01-10 17:57:27,704 INFO L226 Difference]: Without dead ends: 26520 [2022-01-10 17:57:27,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 17:57:27,748 INFO L933 BasicCegarLoop]: 10337 mSDtfsCounter, 10329 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10329 SdHoareTripleChecker+Valid, 10345 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:27,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10329 Valid, 10345 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:57:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2022-01-10 17:57:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 26520. [2022-01-10 17:57:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26520 states, 26510 states have (on average 1.8688796680497926) internal successors, (49544), 26519 states have internal predecessors, (49544), 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 17:57:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26520 states to 26520 states and 49544 transitions. [2022-01-10 17:57:28,716 INFO L78 Accepts]: Start accepts. Automaton has 26520 states and 49544 transitions. Word has length 48 [2022-01-10 17:57:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:28,718 INFO L470 AbstractCegarLoop]: Abstraction has 26520 states and 49544 transitions. [2022-01-10 17:57:28,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 17:57:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 26520 states and 49544 transitions. [2022-01-10 17:57:28,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 17:57:28,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:28,722 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] [2022-01-10 17:57:28,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:57:28,723 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:28,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1665277398, now seen corresponding path program 1 times [2022-01-10 17:57:28,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:28,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285464773] [2022-01-10 17:57:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:28,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:28,901 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 17:57:28,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:28,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285464773] [2022-01-10 17:57:28,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285464773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:28,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:28,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:57:28,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072740900] [2022-01-10 17:57:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:28,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:57:28,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:28,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:57:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:57:28,904 INFO L87 Difference]: Start difference. First operand 26520 states and 49544 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 17:57:29,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:29,897 INFO L93 Difference]: Finished difference Result 53018 states and 99059 transitions. [2022-01-10 17:57:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:57:29,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 50 [2022-01-10 17:57:29,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:29,956 INFO L225 Difference]: With dead ends: 53018 [2022-01-10 17:57:29,956 INFO L226 Difference]: Without dead ends: 26520 [2022-01-10 17:57:29,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 17:57:29,980 INFO L933 BasicCegarLoop]: 10323 mSDtfsCounter, 20653 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20653 SdHoareTripleChecker+Valid, 10351 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:29,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20653 Valid, 10351 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:57:30,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2022-01-10 17:57:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 26520. [2022-01-10 17:57:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26520 states, 26510 states have (on average 1.868728781591852) internal successors, (49540), 26519 states have internal predecessors, (49540), 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 17:57:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26520 states to 26520 states and 49540 transitions. [2022-01-10 17:57:30,789 INFO L78 Accepts]: Start accepts. Automaton has 26520 states and 49540 transitions. Word has length 50 [2022-01-10 17:57:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:30,789 INFO L470 AbstractCegarLoop]: Abstraction has 26520 states and 49540 transitions. [2022-01-10 17:57:30,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 17:57:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 26520 states and 49540 transitions. [2022-01-10 17:57:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 17:57:30,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:30,791 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] [2022-01-10 17:57:30,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:57:30,792 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:30,792 INFO L85 PathProgramCache]: Analyzing trace with hash 757538921, now seen corresponding path program 1 times [2022-01-10 17:57:30,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:30,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999366130] [2022-01-10 17:57:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:30,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:30,866 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 17:57:30,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:30,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999366130] [2022-01-10 17:57:30,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999366130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:30,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:30,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:57:30,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438547250] [2022-01-10 17:57:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:30,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:57:30,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:57:30,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:57:30,869 INFO L87 Difference]: Start difference. First operand 26520 states and 49540 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 17:57:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:31,558 INFO L93 Difference]: Finished difference Result 53012 states and 99041 transitions. [2022-01-10 17:57:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:57:31,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 51 [2022-01-10 17:57:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:31,609 INFO L225 Difference]: With dead ends: 53012 [2022-01-10 17:57:31,610 INFO L226 Difference]: Without dead ends: 26520 [2022-01-10 17:57:31,647 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 17:57:31,648 INFO L933 BasicCegarLoop]: 10305 mSDtfsCounter, 20626 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20626 SdHoareTripleChecker+Valid, 10348 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:31,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20626 Valid, 10348 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:57:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2022-01-10 17:57:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 26520. [2022-01-10 17:57:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26520 states, 26510 states have (on average 1.8685778951339118) internal successors, (49536), 26519 states have internal predecessors, (49536), 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 17:57:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26520 states to 26520 states and 49536 transitions. [2022-01-10 17:57:32,368 INFO L78 Accepts]: Start accepts. Automaton has 26520 states and 49536 transitions. Word has length 51 [2022-01-10 17:57:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:32,369 INFO L470 AbstractCegarLoop]: Abstraction has 26520 states and 49536 transitions. [2022-01-10 17:57:32,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 17:57:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 26520 states and 49536 transitions. [2022-01-10 17:57:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 17:57:32,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:32,371 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] [2022-01-10 17:57:32,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:57:32,371 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash -784506177, now seen corresponding path program 1 times [2022-01-10 17:57:32,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:32,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710734007] [2022-01-10 17:57:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:32,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:32,444 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 17:57:32,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:32,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710734007] [2022-01-10 17:57:32,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710734007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:32,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:32,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:57:32,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472146786] [2022-01-10 17:57:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:32,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:57:32,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:57:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:57:32,446 INFO L87 Difference]: Start difference. First operand 26520 states and 49536 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 17:57:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:33,092 INFO L93 Difference]: Finished difference Result 53012 states and 99034 transitions. [2022-01-10 17:57:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:57:33,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2022-01-10 17:57:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:33,147 INFO L225 Difference]: With dead ends: 53012 [2022-01-10 17:57:33,147 INFO L226 Difference]: Without dead ends: 26520 [2022-01-10 17:57:33,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 17:57:33,212 INFO L933 BasicCegarLoop]: 10305 mSDtfsCounter, 30933 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30933 SdHoareTripleChecker+Valid, 10348 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:33,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30933 Valid, 10348 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:57:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2022-01-10 17:57:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 26520. [2022-01-10 17:57:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26520 states, 26510 states have (on average 1.8684270086759713) internal successors, (49532), 26519 states have internal predecessors, (49532), 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 17:57:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26520 states to 26520 states and 49532 transitions. [2022-01-10 17:57:33,895 INFO L78 Accepts]: Start accepts. Automaton has 26520 states and 49532 transitions. Word has length 52 [2022-01-10 17:57:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:33,895 INFO L470 AbstractCegarLoop]: Abstraction has 26520 states and 49532 transitions. [2022-01-10 17:57:33,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 17:57:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 26520 states and 49532 transitions. [2022-01-10 17:57:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 17:57:33,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:33,898 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 17:57:33,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:57:33,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:33,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash 333707062, now seen corresponding path program 1 times [2022-01-10 17:57:33,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:33,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969557055] [2022-01-10 17:57:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:33,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:33,982 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 17:57:33,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:33,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969557055] [2022-01-10 17:57:33,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969557055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:33,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:33,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:57:33,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134913965] [2022-01-10 17:57:33,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:33,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:57:33,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:57:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:57:33,987 INFO L87 Difference]: Start difference. First operand 26520 states and 49532 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 17:57:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:34,800 INFO L93 Difference]: Finished difference Result 53012 states and 99027 transitions. [2022-01-10 17:57:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:57:34,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 17:57:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:34,858 INFO L225 Difference]: With dead ends: 53012 [2022-01-10 17:57:34,858 INFO L226 Difference]: Without dead ends: 26520 [2022-01-10 17:57:34,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 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 17:57:34,894 INFO L933 BasicCegarLoop]: 10305 mSDtfsCounter, 30926 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30926 SdHoareTripleChecker+Valid, 10348 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:34,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30926 Valid, 10348 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:57:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2022-01-10 17:57:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 26520. [2022-01-10 17:57:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26520 states, 26510 states have (on average 1.8682761222180309) internal successors, (49528), 26519 states have internal predecessors, (49528), 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 17:57:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26520 states to 26520 states and 49528 transitions. [2022-01-10 17:57:36,261 INFO L78 Accepts]: Start accepts. Automaton has 26520 states and 49528 transitions. Word has length 53 [2022-01-10 17:57:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:36,262 INFO L470 AbstractCegarLoop]: Abstraction has 26520 states and 49528 transitions. [2022-01-10 17:57:36,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 17:57:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 26520 states and 49528 transitions. [2022-01-10 17:57:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 17:57:36,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:36,264 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] [2022-01-10 17:57:36,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:57:36,264 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1979417172, now seen corresponding path program 1 times [2022-01-10 17:57:36,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:36,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935150336] [2022-01-10 17:57:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:36,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:36,347 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 17:57:36,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935150336] [2022-01-10 17:57:36,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935150336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:36,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:36,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:57:36,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575884767] [2022-01-10 17:57:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:36,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:57:36,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:57:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:57:36,349 INFO L87 Difference]: Start difference. First operand 26520 states and 49528 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 17:57:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:37,172 INFO L93 Difference]: Finished difference Result 53012 states and 99020 transitions. [2022-01-10 17:57:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 17:57:37,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2022-01-10 17:57:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:37,219 INFO L225 Difference]: With dead ends: 53012 [2022-01-10 17:57:37,219 INFO L226 Difference]: Without dead ends: 26520 [2022-01-10 17:57:37,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 17:57:37,240 INFO L933 BasicCegarLoop]: 10305 mSDtfsCounter, 41228 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41228 SdHoareTripleChecker+Valid, 10348 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:37,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41228 Valid, 10348 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:57:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2022-01-10 17:57:38,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 26520. [2022-01-10 17:57:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26520 states, 26510 states have (on average 1.8681252357600906) internal successors, (49524), 26519 states have internal predecessors, (49524), 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 17:57:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26520 states to 26520 states and 49524 transitions. [2022-01-10 17:57:38,091 INFO L78 Accepts]: Start accepts. Automaton has 26520 states and 49524 transitions. Word has length 54 [2022-01-10 17:57:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:38,091 INFO L470 AbstractCegarLoop]: Abstraction has 26520 states and 49524 transitions. [2022-01-10 17:57:38,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 17:57:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 26520 states and 49524 transitions. [2022-01-10 17:57:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 17:57:38,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:38,093 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] [2022-01-10 17:57:38,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:57:38,093 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:38,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1005146627, now seen corresponding path program 1 times [2022-01-10 17:57:38,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:38,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876508831] [2022-01-10 17:57:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:38,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:38,180 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 17:57:38,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:38,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876508831] [2022-01-10 17:57:38,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876508831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:38,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:38,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:57:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230966473] [2022-01-10 17:57:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:38,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:57:38,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:57:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:57:38,182 INFO L87 Difference]: Start difference. First operand 26520 states and 49524 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 17:57:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:43,283 INFO L93 Difference]: Finished difference Result 173772 states and 324382 transitions. [2022-01-10 17:57:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:57:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2022-01-10 17:57:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:43,599 INFO L225 Difference]: With dead ends: 173772 [2022-01-10 17:57:43,600 INFO L226 Difference]: Without dead ends: 148174 [2022-01-10 17:57:43,640 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 17:57:43,641 INFO L933 BasicCegarLoop]: 21071 mSDtfsCounter, 69951 mSDsluCounter, 55970 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69951 SdHoareTripleChecker+Valid, 77041 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:43,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69951 Valid, 77041 Invalid, 1484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [251 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 17:57:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148174 states. [2022-01-10 17:57:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148174 to 50056. [2022-01-10 17:57:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50056 states, 50046 states have (on average 1.8675018982536067) internal successors, (93461), 50055 states have internal predecessors, (93461), 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 17:57:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50056 states to 50056 states and 93461 transitions. [2022-01-10 17:57:45,959 INFO L78 Accepts]: Start accepts. Automaton has 50056 states and 93461 transitions. Word has length 55 [2022-01-10 17:57:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:45,959 INFO L470 AbstractCegarLoop]: Abstraction has 50056 states and 93461 transitions. [2022-01-10 17:57:45,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 17:57:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 50056 states and 93461 transitions. [2022-01-10 17:57:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:57:45,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:45,961 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 17:57:45,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:57:45,962 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1695824950, now seen corresponding path program 1 times [2022-01-10 17:57:45,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:45,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681650052] [2022-01-10 17:57:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:45,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:46,030 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 17:57:46,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:46,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681650052] [2022-01-10 17:57:46,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681650052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:46,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:46,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:57:46,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078020826] [2022-01-10 17:57:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:46,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:57:46,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:57:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:57:46,032 INFO L87 Difference]: Start difference. First operand 50056 states and 93461 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 17:57:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:48,045 INFO L93 Difference]: Finished difference Result 100462 states and 187273 transitions. [2022-01-10 17:57:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:57:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 17:57:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:48,219 INFO L225 Difference]: With dead ends: 100462 [2022-01-10 17:57:48,219 INFO L226 Difference]: Without dead ends: 50482 [2022-01-10 17:57:48,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:57:48,241 INFO L933 BasicCegarLoop]: 16154 mSDtfsCounter, 30092 mSDsluCounter, 26004 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30092 SdHoareTripleChecker+Valid, 42158 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:48,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30092 Valid, 42158 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:57:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50482 states. [2022-01-10 17:57:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50482 to 49303. [2022-01-10 17:57:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49303 states, 49293 states have (on average 1.8717870691578926) internal successors, (92266), 49302 states have internal predecessors, (92266), 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 17:57:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49303 states to 49303 states and 92266 transitions. [2022-01-10 17:57:49,991 INFO L78 Accepts]: Start accepts. Automaton has 49303 states and 92266 transitions. Word has length 56 [2022-01-10 17:57:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:49,991 INFO L470 AbstractCegarLoop]: Abstraction has 49303 states and 92266 transitions. [2022-01-10 17:57:49,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 17:57:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 49303 states and 92266 transitions. [2022-01-10 17:57:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:57:49,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:49,992 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 17:57:49,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:57:49,992 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1026392628, now seen corresponding path program 1 times [2022-01-10 17:57:49,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:49,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895694099] [2022-01-10 17:57:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:49,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:50,041 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 17:57:50,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:50,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895694099] [2022-01-10 17:57:50,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895694099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:50,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:50,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:57:50,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850370619] [2022-01-10 17:57:50,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:50,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:57:50,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:50,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:57:50,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:57:50,044 INFO L87 Difference]: Start difference. First operand 49303 states and 92266 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 17:57:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:57:53,453 INFO L93 Difference]: Finished difference Result 146393 states and 274134 transitions. [2022-01-10 17:57:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:57:53,454 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 17:57:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:57:53,761 INFO L225 Difference]: With dead ends: 146393 [2022-01-10 17:57:53,761 INFO L226 Difference]: Without dead ends: 97135 [2022-01-10 17:57:53,800 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 17:57:53,800 INFO L933 BasicCegarLoop]: 12459 mSDtfsCounter, 9805 mSDsluCounter, 10045 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9805 SdHoareTripleChecker+Valid, 22504 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:57:53,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9805 Valid, 22504 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:57:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97135 states. [2022-01-10 17:57:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97135 to 49675. [2022-01-10 17:57:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49675 states, 49665 states have (on average 1.8686398872445384) internal successors, (92806), 49674 states have internal predecessors, (92806), 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 17:57:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49675 states to 49675 states and 92806 transitions. [2022-01-10 17:57:55,986 INFO L78 Accepts]: Start accepts. Automaton has 49675 states and 92806 transitions. Word has length 56 [2022-01-10 17:57:55,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:55,986 INFO L470 AbstractCegarLoop]: Abstraction has 49675 states and 92806 transitions. [2022-01-10 17:57:55,986 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 17:57:55,986 INFO L276 IsEmpty]: Start isEmpty. Operand 49675 states and 92806 transitions. [2022-01-10 17:57:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:57:55,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:55,987 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 17:57:55,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:57:55,988 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 523636146, now seen corresponding path program 1 times [2022-01-10 17:57:55,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:55,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293861077] [2022-01-10 17:57:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:55,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:56,047 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 17:57:56,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:56,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293861077] [2022-01-10 17:57:56,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293861077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:56,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:56,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:57:56,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390086907] [2022-01-10 17:57:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:56,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:57:56,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:56,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:57:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:57:56,049 INFO L87 Difference]: Start difference. First operand 49675 states and 92806 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)