/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/email_spec4_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:06:28,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:06:28,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:06:28,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:06:28,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:06:28,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:06:28,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:06:28,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:06:28,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:06:28,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:06:28,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:06:28,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:06:28,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:06:28,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:06:28,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:06:28,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:06:28,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:06:28,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:06:28,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:06:29,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:06:29,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:06:29,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:06:29,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:06:29,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:06:29,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:06:29,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:06:29,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:06:29,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:06:29,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:06:29,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:06:29,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:06:29,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:06:29,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:06:29,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:06:29,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:06:29,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:06:29,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:06:29,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:06:29,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:06:29,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:06:29,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:06:29,022 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 18:06:29,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:06:29,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:06:29,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:06:29,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:06:29,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:06:29,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:06:29,054 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:06:29,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:06:29,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:06:29,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:06:29,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:06:29,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:06:29,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:06:29,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:06:29,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:06:29,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:06:29,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:06:29,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:06:29,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:06:29,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:06:29,057 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:06:29,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:06:29,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:06:29,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:06:29,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:06:29,059 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:06:29,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:06:29,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:06:29,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:06:29,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:06:29,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:06:29,287 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:06:29,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2022-01-10 18:06:29,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ee18172/809a881b07984a269697d2eaa4dacefe/FLAG838628976 [2022-01-10 18:06:29,888 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:06:29,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2022-01-10 18:06:29,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ee18172/809a881b07984a269697d2eaa4dacefe/FLAG838628976 [2022-01-10 18:06:30,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ee18172/809a881b07984a269697d2eaa4dacefe [2022-01-10 18:06:30,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:06:30,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:06:30,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:06:30,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:06:30,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:06:30,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:06:30" (1/1) ... [2022-01-10 18:06:30,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401f7024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:30, skipping insertion in model container [2022-01-10 18:06:30,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:06:30" (1/1) ... [2022-01-10 18:06:30,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:06:30,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:06:30,718 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/email_spec4_product17.cil.c[45969,45982] [2022-01-10 18:06:30,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:06:30,806 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:06:30,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:06:30,877 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/email_spec4_product17.cil.c[45969,45982] [2022-01-10 18:06:30,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:06:30,914 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:06:30,995 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/email_spec4_product17.cil.c[45969,45982] [2022-01-10 18:06:31,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:06:31,059 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:06:31,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31 WrapperNode [2022-01-10 18:06:31,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:06:31,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:06:31,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:06:31,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:06:31,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,189 INFO L137 Inliner]: procedures = 129, calls = 208, calls flagged for inlining = 119, calls inlined = 218, statements flattened = 3408 [2022-01-10 18:06:31,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:06:31,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:06:31,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:06:31,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:06:31,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:06:31,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:06:31,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:06:31,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:06:31,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (1/1) ... [2022-01-10 18:06:31,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:06:31,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:06:31,361 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 18:06:31,372 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 18:06:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:06:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:06:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:06:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:06:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:06:31,626 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:06:31,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:06:33,241 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:06:33,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:06:33,263 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:06:33,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:33 BoogieIcfgContainer [2022-01-10 18:06:33,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:06:33,266 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:06:33,266 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:06:33,271 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:06:33,274 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:06:33 BasicIcfg [2022-01-10 18:06:33,708 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:06:33,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:06:33,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:06:33,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:06:33,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:06:30" (1/4) ... [2022-01-10 18:06:33,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71296865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:06:33, skipping insertion in model container [2022-01-10 18:06:33,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:31" (2/4) ... [2022-01-10 18:06:33,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71296865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:06:33, skipping insertion in model container [2022-01-10 18:06:33,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:33" (3/4) ... [2022-01-10 18:06:33,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71296865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:06:33, skipping insertion in model container [2022-01-10 18:06:33,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:06:33" (4/4) ... [2022-01-10 18:06:33,714 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product17.cil.cTransformedIcfg [2022-01-10 18:06:33,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:06:33,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:06:33,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:06:33,781 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 18:06:33,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:06:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 787 states, 780 states have (on average 1.7076923076923076) internal successors, (1332), 786 states have internal predecessors, (1332), 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 18:06:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:06:33,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:33,817 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 18:06:33,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1459895444, now seen corresponding path program 1 times [2022-01-10 18:06:33,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:33,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687979210] [2022-01-10 18:06:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:33,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:34,235 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 18:06:34,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:34,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687979210] [2022-01-10 18:06:34,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687979210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:34,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:34,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:06:34,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917456069] [2022-01-10 18:06:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:34,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:06:34,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:06:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:06:34,276 INFO L87 Difference]: Start difference. First operand has 787 states, 780 states have (on average 1.7076923076923076) internal successors, (1332), 786 states have internal predecessors, (1332), 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 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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 18:06:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:34,361 INFO L93 Difference]: Finished difference Result 1270 states and 2125 transitions. [2022-01-10 18:06:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:06:34,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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 18:06:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:34,387 INFO L225 Difference]: With dead ends: 1270 [2022-01-10 18:06:34,387 INFO L226 Difference]: Without dead ends: 691 [2022-01-10 18:06:34,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:06:34,401 INFO L933 BasicCegarLoop]: 1318 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:34,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-01-10 18:06:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2022-01-10 18:06:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 685 states have (on average 1.7124087591240875) internal successors, (1173), 690 states have internal predecessors, (1173), 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 18:06:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1173 transitions. [2022-01-10 18:06:34,474 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1173 transitions. Word has length 50 [2022-01-10 18:06:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:34,474 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1173 transitions. [2022-01-10 18:06:34,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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 18:06:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1173 transitions. [2022-01-10 18:06:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:06:34,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:34,479 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 18:06:34,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:06:34,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:34,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1954196382, now seen corresponding path program 1 times [2022-01-10 18:06:34,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:34,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938187033] [2022-01-10 18:06:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:34,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:34,715 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 18:06:34,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:34,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938187033] [2022-01-10 18:06:34,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938187033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:34,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:34,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:06:34,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854458242] [2022-01-10 18:06:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:34,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:06:34,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:06:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:06:34,724 INFO L87 Difference]: Start difference. First operand 691 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:06:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:34,815 INFO L93 Difference]: Finished difference Result 1363 states and 2318 transitions. [2022-01-10 18:06:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:06:34,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:06:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:34,820 INFO L225 Difference]: With dead ends: 1363 [2022-01-10 18:06:34,820 INFO L226 Difference]: Without dead ends: 691 [2022-01-10 18:06:34,821 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 18:06:34,822 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 1148 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:34,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 1166 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-01-10 18:06:34,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2022-01-10 18:06:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 685 states have (on average 1.7094890510948906) internal successors, (1171), 690 states have internal predecessors, (1171), 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 18:06:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1171 transitions. [2022-01-10 18:06:34,890 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1171 transitions. Word has length 51 [2022-01-10 18:06:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:34,891 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1171 transitions. [2022-01-10 18:06:34,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:06:34,893 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1171 transitions. [2022-01-10 18:06:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:06:34,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:34,896 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 18:06:34,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:06:34,896 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash -967167262, now seen corresponding path program 1 times [2022-01-10 18:06:34,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:34,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153284769] [2022-01-10 18:06:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:34,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:35,070 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 18:06:35,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:35,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153284769] [2022-01-10 18:06:35,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153284769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:35,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:35,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:35,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815524220] [2022-01-10 18:06:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:35,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:35,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:35,073 INFO L87 Difference]: Start difference. First operand 691 states and 1171 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:06:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:35,372 INFO L93 Difference]: Finished difference Result 3323 states and 5651 transitions. [2022-01-10 18:06:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:06:35,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:06:35,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:35,387 INFO L225 Difference]: With dead ends: 3323 [2022-01-10 18:06:35,387 INFO L226 Difference]: Without dead ends: 2656 [2022-01-10 18:06:35,393 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 18:06:35,397 INFO L933 BasicCegarLoop]: 2265 mSDtfsCounter, 5638 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5638 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:35,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5638 Valid, 5650 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:35,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2022-01-10 18:06:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 691. [2022-01-10 18:06:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 685 states have (on average 1.7080291970802919) internal successors, (1170), 690 states have internal predecessors, (1170), 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 18:06:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1170 transitions. [2022-01-10 18:06:35,467 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1170 transitions. Word has length 53 [2022-01-10 18:06:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:35,467 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1170 transitions. [2022-01-10 18:06:35,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 18:06:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1170 transitions. [2022-01-10 18:06:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:06:35,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:35,472 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 18:06:35,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:06:35,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:35,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1104295342, now seen corresponding path program 1 times [2022-01-10 18:06:35,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:35,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191164218] [2022-01-10 18:06:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:35,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:35,618 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 18:06:35,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:35,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191164218] [2022-01-10 18:06:35,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191164218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:35,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:35,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:06:35,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047129941] [2022-01-10 18:06:35,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:35,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:06:35,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:06:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:06:35,621 INFO L87 Difference]: Start difference. First operand 691 states and 1170 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 18:06:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:35,684 INFO L93 Difference]: Finished difference Result 1367 states and 2318 transitions. [2022-01-10 18:06:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:06:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 18:06:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:35,688 INFO L225 Difference]: With dead ends: 1367 [2022-01-10 18:06:35,688 INFO L226 Difference]: Without dead ends: 705 [2022-01-10 18:06:35,690 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 18:06:35,695 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 1149 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:35,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 1206 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-01-10 18:06:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 691. [2022-01-10 18:06:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 685 states have (on average 1.7065693430656934) internal successors, (1169), 690 states have internal predecessors, (1169), 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 18:06:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1169 transitions. [2022-01-10 18:06:35,767 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1169 transitions. Word has length 54 [2022-01-10 18:06:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:35,769 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1169 transitions. [2022-01-10 18:06:35,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 18:06:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1169 transitions. [2022-01-10 18:06:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 18:06:35,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:35,771 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 18:06:35,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:06:35,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1960433987, now seen corresponding path program 1 times [2022-01-10 18:06:35,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:35,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256293501] [2022-01-10 18:06:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:35,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:35,884 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 18:06:35,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:35,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256293501] [2022-01-10 18:06:35,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256293501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:35,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:35,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:35,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553030243] [2022-01-10 18:06:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:35,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:35,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:35,886 INFO L87 Difference]: Start difference. First operand 691 states and 1169 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 18:06:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:36,094 INFO L93 Difference]: Finished difference Result 2007 states and 3407 transitions. [2022-01-10 18:06:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:36,095 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 18:06:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:36,101 INFO L225 Difference]: With dead ends: 2007 [2022-01-10 18:06:36,102 INFO L226 Difference]: Without dead ends: 1350 [2022-01-10 18:06:36,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:36,104 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 5561 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:36,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5561 Valid, 2370 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-01-10 18:06:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 691. [2022-01-10 18:06:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 685 states have (on average 1.7036496350364962) internal successors, (1167), 690 states have internal predecessors, (1167), 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 18:06:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1167 transitions. [2022-01-10 18:06:36,151 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1167 transitions. Word has length 55 [2022-01-10 18:06:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:36,152 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1167 transitions. [2022-01-10 18:06:36,152 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 18:06:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1167 transitions. [2022-01-10 18:06:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:06:36,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:36,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:36,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:06:36,154 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:36,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1996509856, now seen corresponding path program 1 times [2022-01-10 18:06:36,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:36,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409821869] [2022-01-10 18:06:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:36,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:36,269 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 18:06:36,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:36,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409821869] [2022-01-10 18:06:36,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409821869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:36,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:36,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:36,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550219977] [2022-01-10 18:06:36,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:36,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:36,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:36,272 INFO L87 Difference]: Start difference. First operand 691 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 18:06:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:36,702 INFO L93 Difference]: Finished difference Result 2947 states and 4873 transitions. [2022-01-10 18:06:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:06:36,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2022-01-10 18:06:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:36,715 INFO L225 Difference]: With dead ends: 2947 [2022-01-10 18:06:36,715 INFO L226 Difference]: Without dead ends: 2613 [2022-01-10 18:06:36,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:06:36,719 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 5177 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5177 SdHoareTripleChecker+Valid, 4587 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:36,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5177 Valid, 4587 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2022-01-10 18:06:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1057. [2022-01-10 18:06:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1051 states have (on average 1.681255946717412) internal successors, (1767), 1056 states have internal predecessors, (1767), 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 18:06:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1767 transitions. [2022-01-10 18:06:36,815 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1767 transitions. Word has length 57 [2022-01-10 18:06:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:36,819 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1767 transitions. [2022-01-10 18:06:36,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 18:06:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1767 transitions. [2022-01-10 18:06:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:06:36,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:36,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:36,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:06:36,822 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash -456365739, now seen corresponding path program 1 times [2022-01-10 18:06:36,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:36,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561826112] [2022-01-10 18:06:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:36,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:36,990 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 18:06:36,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:36,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561826112] [2022-01-10 18:06:36,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561826112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:36,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:36,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:36,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174389412] [2022-01-10 18:06:36,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:36,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:06:36,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:36,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:06:36,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:36,992 INFO L87 Difference]: Start difference. First operand 1057 states and 1767 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:37,351 INFO L93 Difference]: Finished difference Result 2189 states and 3612 transitions. [2022-01-10 18:06:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:06:37,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 18:06:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:37,357 INFO L225 Difference]: With dead ends: 2189 [2022-01-10 18:06:37,358 INFO L226 Difference]: Without dead ends: 1549 [2022-01-10 18:06:37,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 18:06:37,362 INFO L933 BasicCegarLoop]: 1169 mSDtfsCounter, 4398 mSDsluCounter, 4498 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:37,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4398 Valid, 5667 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-01-10 18:06:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1036. [2022-01-10 18:06:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1030 states have (on average 1.674757281553398) internal successors, (1725), 1035 states have internal predecessors, (1725), 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 18:06:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1725 transitions. [2022-01-10 18:06:37,441 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1725 transitions. Word has length 58 [2022-01-10 18:06:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:37,441 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1725 transitions. [2022-01-10 18:06:37,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1725 transitions. [2022-01-10 18:06:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:06:37,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:37,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:37,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:06:37,443 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:37,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:37,443 INFO L85 PathProgramCache]: Analyzing trace with hash 315412333, now seen corresponding path program 1 times [2022-01-10 18:06:37,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:37,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65761786] [2022-01-10 18:06:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:37,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:37,601 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 18:06:37,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:37,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65761786] [2022-01-10 18:06:37,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65761786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:37,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:37,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:37,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077115359] [2022-01-10 18:06:37,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:37,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:06:37,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:37,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:06:37,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:37,603 INFO L87 Difference]: Start difference. First operand 1036 states and 1725 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:39,041 INFO L93 Difference]: Finished difference Result 7029 states and 11554 transitions. [2022-01-10 18:06:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:06:39,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 18:06:39,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:39,071 INFO L225 Difference]: With dead ends: 7029 [2022-01-10 18:06:39,071 INFO L226 Difference]: Without dead ends: 6755 [2022-01-10 18:06:39,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:06:39,076 INFO L933 BasicCegarLoop]: 2635 mSDtfsCounter, 7060 mSDsluCounter, 11193 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7060 SdHoareTripleChecker+Valid, 13828 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:39,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7060 Valid, 13828 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:06:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6755 states. [2022-01-10 18:06:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6755 to 1761. [2022-01-10 18:06:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1755 states have (on average 1.656980056980057) internal successors, (2908), 1760 states have internal predecessors, (2908), 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 18:06:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2908 transitions. [2022-01-10 18:06:39,330 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2908 transitions. Word has length 61 [2022-01-10 18:06:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:39,330 INFO L470 AbstractCegarLoop]: Abstraction has 1761 states and 2908 transitions. [2022-01-10 18:06:39,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:39,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2908 transitions. [2022-01-10 18:06:39,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:06:39,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:39,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:39,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:06:39,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1188773376, now seen corresponding path program 1 times [2022-01-10 18:06:39,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:39,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72313106] [2022-01-10 18:06:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:39,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:39,482 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 18:06:39,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:39,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72313106] [2022-01-10 18:06:39,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72313106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:39,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:39,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:39,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948859989] [2022-01-10 18:06:39,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:39,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:39,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:39,485 INFO L87 Difference]: Start difference. First operand 1761 states and 2908 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 18:06:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:40,467 INFO L93 Difference]: Finished difference Result 5954 states and 9678 transitions. [2022-01-10 18:06:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 62 [2022-01-10 18:06:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:40,489 INFO L225 Difference]: With dead ends: 5954 [2022-01-10 18:06:40,489 INFO L226 Difference]: Without dead ends: 5184 [2022-01-10 18:06:40,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:40,493 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 5304 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:40,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5304 Valid, 4993 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:06:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2022-01-10 18:06:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 1925. [2022-01-10 18:06:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1919 states have (on average 1.6404377279833247) internal successors, (3148), 1924 states have internal predecessors, (3148), 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 18:06:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3148 transitions. [2022-01-10 18:06:40,719 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3148 transitions. Word has length 62 [2022-01-10 18:06:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:40,720 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 3148 transitions. [2022-01-10 18:06:40,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 18:06:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3148 transitions. [2022-01-10 18:06:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:06:40,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:40,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:40,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:06:40,722 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:40,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:40,723 INFO L85 PathProgramCache]: Analyzing trace with hash -116667153, now seen corresponding path program 1 times [2022-01-10 18:06:40,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:40,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699174828] [2022-01-10 18:06:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:40,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:40,814 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 18:06:40,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699174828] [2022-01-10 18:06:40,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699174828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:40,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:40,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:40,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168686375] [2022-01-10 18:06:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:40,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:40,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:40,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:40,816 INFO L87 Difference]: Start difference. First operand 1925 states and 3148 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 18:06:41,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:41,232 INFO L93 Difference]: Finished difference Result 3962 states and 6435 transitions. [2022-01-10 18:06:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:41,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2022-01-10 18:06:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:41,245 INFO L225 Difference]: With dead ends: 3962 [2022-01-10 18:06:41,246 INFO L226 Difference]: Without dead ends: 2839 [2022-01-10 18:06:41,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:41,249 INFO L933 BasicCegarLoop]: 1150 mSDtfsCounter, 3290 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:41,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 2666 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2022-01-10 18:06:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 1925. [2022-01-10 18:06:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1919 states have (on average 1.6393955184992184) internal successors, (3146), 1924 states have internal predecessors, (3146), 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 18:06:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3146 transitions. [2022-01-10 18:06:41,499 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3146 transitions. Word has length 62 [2022-01-10 18:06:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:41,500 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 3146 transitions. [2022-01-10 18:06:41,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 18:06:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3146 transitions. [2022-01-10 18:06:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:06:41,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:41,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:41,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:06:41,502 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:41,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:41,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1800792469, now seen corresponding path program 1 times [2022-01-10 18:06:41,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:41,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534167869] [2022-01-10 18:06:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:41,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:41,640 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 18:06:41,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534167869] [2022-01-10 18:06:41,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534167869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:41,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:41,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:41,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877943787] [2022-01-10 18:06:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:41,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:41,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:41,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:41,642 INFO L87 Difference]: Start difference. First operand 1925 states and 3146 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:42,717 INFO L93 Difference]: Finished difference Result 6024 states and 9757 transitions. [2022-01-10 18:06:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:42,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:06:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:42,734 INFO L225 Difference]: With dead ends: 6024 [2022-01-10 18:06:42,734 INFO L226 Difference]: Without dead ends: 5064 [2022-01-10 18:06:42,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:42,737 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 5227 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5227 SdHoareTripleChecker+Valid, 5009 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:42,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5227 Valid, 5009 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:06:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2022-01-10 18:06:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 1873. [2022-01-10 18:06:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1867 states have (on average 1.6432779860739153) internal successors, (3068), 1872 states have internal predecessors, (3068), 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 18:06:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3068 transitions. [2022-01-10 18:06:42,990 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3068 transitions. Word has length 63 [2022-01-10 18:06:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:42,991 INFO L470 AbstractCegarLoop]: Abstraction has 1873 states and 3068 transitions. [2022-01-10 18:06:42,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3068 transitions. [2022-01-10 18:06:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:06:42,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:42,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:42,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:06:42,993 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:42,993 INFO L85 PathProgramCache]: Analyzing trace with hash -909945626, now seen corresponding path program 1 times [2022-01-10 18:06:42,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:42,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981663260] [2022-01-10 18:06:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:42,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:43,085 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 18:06:43,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:43,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981663260] [2022-01-10 18:06:43,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981663260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:43,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:43,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:43,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890865076] [2022-01-10 18:06:43,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:43,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:43,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:43,087 INFO L87 Difference]: Start difference. First operand 1873 states and 3068 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:43,858 INFO L93 Difference]: Finished difference Result 5931 states and 9593 transitions. [2022-01-10 18:06:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:06:43,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:06:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:43,868 INFO L225 Difference]: With dead ends: 5931 [2022-01-10 18:06:43,869 INFO L226 Difference]: Without dead ends: 4551 [2022-01-10 18:06:43,872 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 18:06:43,873 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 3347 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3347 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:43,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3347 Valid, 3907 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2022-01-10 18:06:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 2741. [2022-01-10 18:06:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2735 states have (on average 1.6416819012797075) internal successors, (4490), 2740 states have internal predecessors, (4490), 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 18:06:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4490 transitions. [2022-01-10 18:06:44,180 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4490 transitions. Word has length 63 [2022-01-10 18:06:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:44,180 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 4490 transitions. [2022-01-10 18:06:44,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4490 transitions. [2022-01-10 18:06:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:06:44,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:44,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:44,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:06:44,182 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -913447876, now seen corresponding path program 1 times [2022-01-10 18:06:44,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:44,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447507401] [2022-01-10 18:06:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:44,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:44,281 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 18:06:44,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:44,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447507401] [2022-01-10 18:06:44,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447507401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:44,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:44,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:44,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160882053] [2022-01-10 18:06:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:44,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:06:44,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:06:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:06:44,284 INFO L87 Difference]: Start difference. First operand 2741 states and 4490 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:45,054 INFO L93 Difference]: Finished difference Result 6685 states and 10893 transitions. [2022-01-10 18:06:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:45,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:06:45,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:45,065 INFO L225 Difference]: With dead ends: 6685 [2022-01-10 18:06:45,065 INFO L226 Difference]: Without dead ends: 4951 [2022-01-10 18:06:45,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:06:45,069 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1476 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 4353 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:45,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1476 Valid, 4353 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:45,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2022-01-10 18:06:45,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 2367. [2022-01-10 18:06:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2361 states have (on average 1.6421008047437526) internal successors, (3877), 2366 states have internal predecessors, (3877), 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 18:06:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3877 transitions. [2022-01-10 18:06:45,420 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3877 transitions. Word has length 63 [2022-01-10 18:06:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:45,421 INFO L470 AbstractCegarLoop]: Abstraction has 2367 states and 3877 transitions. [2022-01-10 18:06:45,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3877 transitions. [2022-01-10 18:06:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:06:45,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:45,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:45,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:06:45,423 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash -677383784, now seen corresponding path program 1 times [2022-01-10 18:06:45,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108060532] [2022-01-10 18:06:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:45,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:45,527 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 18:06:45,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108060532] [2022-01-10 18:06:45,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108060532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:45,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:45,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:06:45,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131992843] [2022-01-10 18:06:45,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:45,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:06:45,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:06:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:45,530 INFO L87 Difference]: Start difference. First operand 2367 states and 3877 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:46,576 INFO L93 Difference]: Finished difference Result 5677 states and 9158 transitions. [2022-01-10 18:06:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:06:46,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:06:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:46,587 INFO L225 Difference]: With dead ends: 5677 [2022-01-10 18:06:46,587 INFO L226 Difference]: Without dead ends: 4995 [2022-01-10 18:06:46,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2022-01-10 18:06:46,592 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 7047 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7047 SdHoareTripleChecker+Valid, 6114 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:46,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7047 Valid, 6114 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:06:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2022-01-10 18:06:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 2447. [2022-01-10 18:06:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2441 states have (on average 1.6300696435886932) internal successors, (3979), 2446 states have internal predecessors, (3979), 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 18:06:46,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3979 transitions. [2022-01-10 18:06:46,913 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3979 transitions. Word has length 64 [2022-01-10 18:06:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:46,914 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 3979 transitions. [2022-01-10 18:06:46,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3979 transitions. [2022-01-10 18:06:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:06:46,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:46,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:46,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:06:46,916 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:46,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1975469917, now seen corresponding path program 1 times [2022-01-10 18:06:46,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513071874] [2022-01-10 18:06:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:46,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:46,999 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 18:06:47,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:47,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513071874] [2022-01-10 18:06:47,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513071874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:47,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:47,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:47,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464069490] [2022-01-10 18:06:47,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:47,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:47,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:47,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:47,001 INFO L87 Difference]: Start difference. First operand 2447 states and 3979 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:47,884 INFO L93 Difference]: Finished difference Result 6775 states and 10911 transitions. [2022-01-10 18:06:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:06:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:06:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:47,894 INFO L225 Difference]: With dead ends: 6775 [2022-01-10 18:06:47,894 INFO L226 Difference]: Without dead ends: 4988 [2022-01-10 18:06:47,899 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 18:06:47,900 INFO L933 BasicCegarLoop]: 1148 mSDtfsCounter, 4145 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:47,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4145 Valid, 4395 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2022-01-10 18:06:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 2475. [2022-01-10 18:06:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2469 states have (on average 1.6261644390441474) internal successors, (4015), 2474 states have internal predecessors, (4015), 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 18:06:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 4015 transitions. [2022-01-10 18:06:48,307 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 4015 transitions. Word has length 64 [2022-01-10 18:06:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:48,308 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 4015 transitions. [2022-01-10 18:06:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 4015 transitions. [2022-01-10 18:06:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:06:48,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:48,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:48,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:06:48,310 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash 477877715, now seen corresponding path program 1 times [2022-01-10 18:06:48,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907999613] [2022-01-10 18:06:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:48,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:48,420 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 18:06:48,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:48,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907999613] [2022-01-10 18:06:48,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907999613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:48,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:48,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:48,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740430225] [2022-01-10 18:06:48,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:48,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:48,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:48,423 INFO L87 Difference]: Start difference. First operand 2475 states and 4015 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:49,185 INFO L93 Difference]: Finished difference Result 5467 states and 8785 transitions. [2022-01-10 18:06:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:06:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:06:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:49,192 INFO L225 Difference]: With dead ends: 5467 [2022-01-10 18:06:49,192 INFO L226 Difference]: Without dead ends: 3510 [2022-01-10 18:06:49,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:49,197 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 3182 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3182 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:49,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3182 Valid, 3917 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2022-01-10 18:06:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 2103. [2022-01-10 18:06:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2097 states have (on average 1.6385312350977588) internal successors, (3436), 2102 states have internal predecessors, (3436), 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 18:06:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3436 transitions. [2022-01-10 18:06:49,488 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3436 transitions. Word has length 65 [2022-01-10 18:06:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:49,489 INFO L470 AbstractCegarLoop]: Abstraction has 2103 states and 3436 transitions. [2022-01-10 18:06:49,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3436 transitions. [2022-01-10 18:06:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:06:49,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:49,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:49,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:06:49,491 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1216859304, now seen corresponding path program 1 times [2022-01-10 18:06:49,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:49,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942208966] [2022-01-10 18:06:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:49,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:49,592 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 18:06:49,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:49,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942208966] [2022-01-10 18:06:49,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942208966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:49,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:49,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:49,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869942506] [2022-01-10 18:06:49,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:49,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:49,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:49,594 INFO L87 Difference]: Start difference. First operand 2103 states and 3436 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:50,659 INFO L93 Difference]: Finished difference Result 6005 states and 9749 transitions. [2022-01-10 18:06:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:50,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:06:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:50,668 INFO L225 Difference]: With dead ends: 6005 [2022-01-10 18:06:50,669 INFO L226 Difference]: Without dead ends: 4616 [2022-01-10 18:06:50,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:50,673 INFO L933 BasicCegarLoop]: 1129 mSDtfsCounter, 5113 mSDsluCounter, 4300 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 5429 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:50,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5113 Valid, 5429 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2022-01-10 18:06:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 2539. [2022-01-10 18:06:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2539 states, 2533 states have (on average 1.6332412159494671) internal successors, (4137), 2538 states have internal predecessors, (4137), 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 18:06:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 4137 transitions. [2022-01-10 18:06:51,089 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 4137 transitions. Word has length 65 [2022-01-10 18:06:51,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:51,089 INFO L470 AbstractCegarLoop]: Abstraction has 2539 states and 4137 transitions. [2022-01-10 18:06:51,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 4137 transitions. [2022-01-10 18:06:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:06:51,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:51,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:51,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:06:51,092 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:51,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:51,093 INFO L85 PathProgramCache]: Analyzing trace with hash 829059606, now seen corresponding path program 1 times [2022-01-10 18:06:51,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:51,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698807671] [2022-01-10 18:06:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:51,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:51,213 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 18:06:51,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:51,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698807671] [2022-01-10 18:06:51,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698807671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:51,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:51,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:51,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275344854] [2022-01-10 18:06:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:51,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:06:51,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:06:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:51,215 INFO L87 Difference]: Start difference. First operand 2539 states and 4137 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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 18:06:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:52,333 INFO L93 Difference]: Finished difference Result 4947 states and 7981 transitions. [2022-01-10 18:06:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 18:06:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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 66 [2022-01-10 18:06:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:52,341 INFO L225 Difference]: With dead ends: 4947 [2022-01-10 18:06:52,341 INFO L226 Difference]: Without dead ends: 4327 [2022-01-10 18:06:52,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-10 18:06:52,344 INFO L933 BasicCegarLoop]: 1107 mSDtfsCounter, 6204 mSDsluCounter, 6961 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6204 SdHoareTripleChecker+Valid, 8068 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:52,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6204 Valid, 8068 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:06:52,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-01-10 18:06:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2589. [2022-01-10 18:06:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2583 states have (on average 1.6225319396051103) internal successors, (4191), 2588 states have internal predecessors, (4191), 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 18:06:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4191 transitions. [2022-01-10 18:06:52,819 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4191 transitions. Word has length 66 [2022-01-10 18:06:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:52,820 INFO L470 AbstractCegarLoop]: Abstraction has 2589 states and 4191 transitions. [2022-01-10 18:06:52,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 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 18:06:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4191 transitions. [2022-01-10 18:06:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:06:52,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:52,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:52,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:06:52,822 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash -67017451, now seen corresponding path program 1 times [2022-01-10 18:06:52,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:52,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122257996] [2022-01-10 18:06:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:52,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:52,933 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 18:06:52,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:52,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122257996] [2022-01-10 18:06:52,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122257996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:52,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:52,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:52,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045608208] [2022-01-10 18:06:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:52,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:52,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:52,936 INFO L87 Difference]: Start difference. First operand 2589 states and 4191 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:53,541 INFO L93 Difference]: Finished difference Result 4640 states and 7449 transitions. [2022-01-10 18:06:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:06:53,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:06:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:53,546 INFO L225 Difference]: With dead ends: 4640 [2022-01-10 18:06:53,547 INFO L226 Difference]: Without dead ends: 2723 [2022-01-10 18:06:53,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 18:06:53,550 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 3268 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:53,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3268 Valid, 3987 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:53,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-01-10 18:06:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1832. [2022-01-10 18:06:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1829 states have (on average 1.6358665937670858) internal successors, (2992), 1831 states have internal predecessors, (2992), 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 18:06:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2992 transitions. [2022-01-10 18:06:53,830 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2992 transitions. Word has length 67 [2022-01-10 18:06:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:53,831 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 2992 transitions. [2022-01-10 18:06:53,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2992 transitions. [2022-01-10 18:06:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:06:53,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:53,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:53,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:06:53,834 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:53,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1083653077, now seen corresponding path program 1 times [2022-01-10 18:06:53,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:53,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085629137] [2022-01-10 18:06:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:53,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:53,945 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 18:06:53,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:53,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085629137] [2022-01-10 18:06:53,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085629137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:53,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:53,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:53,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276983157] [2022-01-10 18:06:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:53,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:53,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:53,947 INFO L87 Difference]: Start difference. First operand 1832 states and 2992 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 18:06:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:55,520 INFO L93 Difference]: Finished difference Result 8726 states and 14270 transitions. [2022-01-10 18:06:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 90 [2022-01-10 18:06:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:55,536 INFO L225 Difference]: With dead ends: 8726 [2022-01-10 18:06:55,537 INFO L226 Difference]: Without dead ends: 8012 [2022-01-10 18:06:55,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:55,543 INFO L933 BasicCegarLoop]: 2091 mSDtfsCounter, 5400 mSDsluCounter, 7062 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5400 SdHoareTripleChecker+Valid, 9153 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:55,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5400 Valid, 9153 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2022-01-10 18:06:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 2427. [2022-01-10 18:06:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2424 states have (on average 1.6493399339933994) internal successors, (3998), 2426 states have internal predecessors, (3998), 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 18:06:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3998 transitions. [2022-01-10 18:06:55,965 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3998 transitions. Word has length 90 [2022-01-10 18:06:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:55,966 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3998 transitions. [2022-01-10 18:06:55,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 18:06:55,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3998 transitions. [2022-01-10 18:06:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 18:06:55,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:55,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:55,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:06:55,970 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1381125289, now seen corresponding path program 1 times [2022-01-10 18:06:55,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:55,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312717346] [2022-01-10 18:06:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:55,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:56,049 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 18:06:56,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:56,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312717346] [2022-01-10 18:06:56,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312717346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:56,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:56,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:56,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299737373] [2022-01-10 18:06:56,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:56,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:56,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:56,051 INFO L87 Difference]: Start difference. First operand 2427 states and 3998 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 18:06:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:56,877 INFO L93 Difference]: Finished difference Result 7158 states and 11823 transitions. [2022-01-10 18:06:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:06:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 91 [2022-01-10 18:06:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:56,885 INFO L225 Difference]: With dead ends: 7158 [2022-01-10 18:06:56,885 INFO L226 Difference]: Without dead ends: 4768 [2022-01-10 18:06:56,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:56,889 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 3354 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:56,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3354 Valid, 3273 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2022-01-10 18:06:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 2427. [2022-01-10 18:06:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2424 states have (on average 1.6485148514851484) internal successors, (3996), 2426 states have internal predecessors, (3996), 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 18:06:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3996 transitions. [2022-01-10 18:06:57,269 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3996 transitions. Word has length 91 [2022-01-10 18:06:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:57,269 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3996 transitions. [2022-01-10 18:06:57,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 18:06:57,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3996 transitions. [2022-01-10 18:06:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 18:06:57,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:57,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:57,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:06:57,275 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash -102846887, now seen corresponding path program 1 times [2022-01-10 18:06:57,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:57,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81414104] [2022-01-10 18:06:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:57,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:57,372 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 18:06:57,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81414104] [2022-01-10 18:06:57,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81414104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:57,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:57,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394742471] [2022-01-10 18:06:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:57,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:06:57,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:57,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:06:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:06:57,374 INFO L87 Difference]: Start difference. First operand 2427 states and 3996 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 18:06:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:57,848 INFO L93 Difference]: Finished difference Result 3626 states and 5901 transitions. [2022-01-10 18:06:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:06:57,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 92 [2022-01-10 18:06:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:57,856 INFO L225 Difference]: With dead ends: 3626 [2022-01-10 18:06:57,856 INFO L226 Difference]: Without dead ends: 2427 [2022-01-10 18:06:57,858 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 18:06:57,859 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 956 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:57,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 2423 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-01-10 18:06:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2427. [2022-01-10 18:06:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2424 states have (on average 1.6402640264026402) internal successors, (3976), 2426 states have internal predecessors, (3976), 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 18:06:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3976 transitions. [2022-01-10 18:06:58,268 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3976 transitions. Word has length 92 [2022-01-10 18:06:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:58,269 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3976 transitions. [2022-01-10 18:06:58,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 18:06:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3976 transitions. [2022-01-10 18:06:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 18:06:58,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:58,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:58,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:06:58,274 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:06:58,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:58,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2012713630, now seen corresponding path program 1 times [2022-01-10 18:06:58,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:58,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102807067] [2022-01-10 18:06:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:58,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:58,387 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 18:06:58,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102807067] [2022-01-10 18:06:58,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102807067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:58,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:58,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:58,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268888412] [2022-01-10 18:06:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:58,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:58,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:58,389 INFO L87 Difference]: Start difference. First operand 2427 states and 3976 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 18:06:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:58,632 INFO L93 Difference]: Finished difference Result 2427 states and 3976 transitions. [2022-01-10 18:06:58,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:58,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 95 [2022-01-10 18:06:58,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:58,633 INFO L225 Difference]: With dead ends: 2427 [2022-01-10 18:06:58,633 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 18:06:58,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:58,636 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 819 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:58,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 2660 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 18:06:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 18:06:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 18:06:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 18:06:58,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2022-01-10 18:06:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:58,637 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 18:06:58,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 18:06:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 18:06:58,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 18:06:58,639 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-10 18:06:58,640 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-10 18:06:58,640 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-01-10 18:06:58,641 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-10 18:06:58,641 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-10 18:06:58,641 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-10 18:06:58,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:06:58,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.