/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_spec6_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:07:41,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:07:41,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:07:41,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:07:41,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:07:41,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:07:41,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:07:41,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:07:41,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:07:41,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:07:41,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:07:41,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:07:41,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:07:41,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:07:41,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:07:41,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:07:41,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:07:41,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:07:41,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:07:41,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:07:41,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:07:41,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:07:41,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:07:41,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:07:41,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:07:41,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:07:41,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:07:41,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:07:41,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:07:41,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:07:41,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:07:41,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:07:41,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:07:41,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:07:41,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:07:41,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:07:41,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:07:41,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:07:41,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:07:41,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:07:41,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:07:41,978 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 18:07:42,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:07:42,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:07:42,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:07:42,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:07:42,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:07:42,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:07:42,004 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:07:42,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:07:42,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:07:42,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:07:42,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:07:42,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:07:42,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:07:42,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:42,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:07:42,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:07:42,007 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:07:42,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:07:42,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:07:42,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:07:42,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:07:42,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:07:42,186 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:07:42,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product14.cil.c [2022-01-10 18:07:42,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5eb87213/44ebb61e9eed4285942c386f3ddbeb57/FLAG871cefdcf [2022-01-10 18:07:42,625 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:07:42,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product14.cil.c [2022-01-10 18:07:42,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5eb87213/44ebb61e9eed4285942c386f3ddbeb57/FLAG871cefdcf [2022-01-10 18:07:42,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5eb87213/44ebb61e9eed4285942c386f3ddbeb57 [2022-01-10 18:07:42,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:07:42,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:07:42,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:42,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:07:42,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:07:42,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:42" (1/1) ... [2022-01-10 18:07:42,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3f3559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:42, skipping insertion in model container [2022-01-10 18:07:42,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:42" (1/1) ... [2022-01-10 18:07:42,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:07:42,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:43,055 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_spec6_product14.cil.c[43937,43950] [2022-01-10 18:07:43,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:43,161 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:07:43,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:43,208 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_spec6_product14.cil.c[43937,43950] [2022-01-10 18:07:43,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:43,238 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:07:43,287 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_spec6_product14.cil.c[43937,43950] [2022-01-10 18:07:43,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:43,329 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:07:43,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43 WrapperNode [2022-01-10 18:07:43,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:43,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:43,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:07:43,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:07:43,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,433 INFO L137 Inliner]: procedures = 128, calls = 212, calls flagged for inlining = 120, calls inlined = 244, statements flattened = 3861 [2022-01-10 18:07:43,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:43,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:07:43,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:07:43,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:07:43,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:07:43,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:07:43,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:07:43,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:07:43,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (1/1) ... [2022-01-10 18:07:43,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:07:43,584 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 18:07:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:07:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:07:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:07:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:07:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:07:43,615 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 18:07:43,790 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:07:43,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:07:45,157 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:07:45,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:07:45,175 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:07:45,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:45 BoogieIcfgContainer [2022-01-10 18:07:45,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:07:45,178 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:07:45,178 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:07:45,179 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:07:45,181 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:45" (1/1) ... [2022-01-10 18:07:45,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:45 BasicIcfg [2022-01-10 18:07:45,533 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:07:45,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:07:45,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:07:45,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:07:45,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:07:42" (1/4) ... [2022-01-10 18:07:45,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e4a551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:45, skipping insertion in model container [2022-01-10 18:07:45,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:43" (2/4) ... [2022-01-10 18:07:45,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e4a551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:45, skipping insertion in model container [2022-01-10 18:07:45,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:45" (3/4) ... [2022-01-10 18:07:45,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e4a551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:07:45, skipping insertion in model container [2022-01-10 18:07:45,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:45" (4/4) ... [2022-01-10 18:07:45,539 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product14.cil.cTransformedIcfg [2022-01-10 18:07:45,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:07:45,543 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:07:45,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:07:45,597 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 18:07:45,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:07:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 874 states have (on average 1.702517162471396) internal successors, (1488), 880 states have internal predecessors, (1488), 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 18:07:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:07:45,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:45,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:45,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -143293699, now seen corresponding path program 1 times [2022-01-10 18:07:45,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:45,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517908824] [2022-01-10 18:07:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:45,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:45,987 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 18:07:45,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:45,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517908824] [2022-01-10 18:07:45,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517908824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:45,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:45,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:07:45,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399653142] [2022-01-10 18:07:45,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:45,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:07:45,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:07:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:07:46,020 INFO L87 Difference]: Start difference. First operand has 881 states, 874 states have (on average 1.702517162471396) internal successors, (1488), 880 states have internal predecessors, (1488), 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 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:46,076 INFO L93 Difference]: Finished difference Result 1458 states and 2437 transitions. [2022-01-10 18:07:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:07:46,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:07:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:46,096 INFO L225 Difference]: With dead ends: 1458 [2022-01-10 18:07:46,097 INFO L226 Difference]: Without dead ends: 808 [2022-01-10 18:07:46,101 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 18:07:46,104 INFO L933 BasicCegarLoop]: 1474 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, 1474 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 18:07:46,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-01-10 18:07:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-01-10 18:07:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 802 states have (on average 1.7082294264339153) internal successors, (1370), 807 states have internal predecessors, (1370), 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 18:07:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1370 transitions. [2022-01-10 18:07:46,191 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1370 transitions. Word has length 60 [2022-01-10 18:07:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:46,191 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1370 transitions. [2022-01-10 18:07:46,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1370 transitions. [2022-01-10 18:07:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:07:46,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:46,193 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 18:07:46,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:07:46,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:46,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1883530960, now seen corresponding path program 1 times [2022-01-10 18:07:46,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477596721] [2022-01-10 18:07:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:46,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:46,423 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 18:07:46,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:46,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477596721] [2022-01-10 18:07:46,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477596721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:46,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:46,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:46,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865305406] [2022-01-10 18:07:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:46,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:46,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:46,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:46,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:46,426 INFO L87 Difference]: Start difference. First operand 808 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:46,514 INFO L93 Difference]: Finished difference Result 1597 states and 2712 transitions. [2022-01-10 18:07:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 18:07:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:46,519 INFO L225 Difference]: With dead ends: 1597 [2022-01-10 18:07:46,519 INFO L226 Difference]: Without dead ends: 808 [2022-01-10 18:07:46,520 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 18:07:46,521 INFO L933 BasicCegarLoop]: 1350 mSDtfsCounter, 1345 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1363 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 18:07:46,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 1363 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-01-10 18:07:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-01-10 18:07:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 802 states have (on average 1.7057356608478802) internal successors, (1368), 807 states have internal predecessors, (1368), 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 18:07:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1368 transitions. [2022-01-10 18:07:46,555 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1368 transitions. Word has length 61 [2022-01-10 18:07:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:46,555 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1368 transitions. [2022-01-10 18:07:46,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1368 transitions. [2022-01-10 18:07:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:07:46,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:46,557 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 18:07:46,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:07:46,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1136771088, now seen corresponding path program 1 times [2022-01-10 18:07:46,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:46,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505917141] [2022-01-10 18:07:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:46,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:46,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:46,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505917141] [2022-01-10 18:07:46,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505917141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:46,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:46,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:46,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039150735] [2022-01-10 18:07:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:46,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:46,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:46,676 INFO L87 Difference]: Start difference. First operand 808 states and 1368 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 18:07:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:46,983 INFO L93 Difference]: Finished difference Result 3908 states and 6636 transitions. [2022-01-10 18:07:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:07:46,983 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 18:07:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:46,996 INFO L225 Difference]: With dead ends: 3908 [2022-01-10 18:07:46,997 INFO L226 Difference]: Without dead ends: 3124 [2022-01-10 18:07:47,002 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 18:07:47,004 INFO L933 BasicCegarLoop]: 2659 mSDtfsCounter, 6623 mSDsluCounter, 3976 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6623 SdHoareTripleChecker+Valid, 6635 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 18:07:47,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6623 Valid, 6635 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2022-01-10 18:07:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 808. [2022-01-10 18:07:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 802 states have (on average 1.7044887780548628) internal successors, (1367), 807 states have internal predecessors, (1367), 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 18:07:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1367 transitions. [2022-01-10 18:07:47,086 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1367 transitions. Word has length 63 [2022-01-10 18:07:47,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:47,086 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1367 transitions. [2022-01-10 18:07:47,086 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 18:07:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1367 transitions. [2022-01-10 18:07:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:07:47,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:47,090 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 18:07:47,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:07:47,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:47,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:47,091 INFO L85 PathProgramCache]: Analyzing trace with hash -426569182, now seen corresponding path program 1 times [2022-01-10 18:07:47,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:47,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353697448] [2022-01-10 18:07:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:47,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:47,203 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 18:07:47,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353697448] [2022-01-10 18:07:47,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353697448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:47,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:47,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:47,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520063937] [2022-01-10 18:07:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:47,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:47,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:47,206 INFO L87 Difference]: Start difference. First operand 808 states and 1367 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 18:07:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:47,262 INFO L93 Difference]: Finished difference Result 1601 states and 2712 transitions. [2022-01-10 18:07:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:47,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 18:07:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:47,267 INFO L225 Difference]: With dead ends: 1601 [2022-01-10 18:07:47,267 INFO L226 Difference]: Without dead ends: 822 [2022-01-10 18:07:47,268 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 18:07:47,276 INFO L933 BasicCegarLoop]: 1381 mSDtfsCounter, 1346 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 1403 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 18:07:47,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 1403 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:47,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-01-10 18:07:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 808. [2022-01-10 18:07:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 802 states have (on average 1.7032418952618453) internal successors, (1366), 807 states have internal predecessors, (1366), 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 18:07:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1366 transitions. [2022-01-10 18:07:47,316 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1366 transitions. Word has length 64 [2022-01-10 18:07:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:47,316 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1366 transitions. [2022-01-10 18:07:47,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 18:07:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1366 transitions. [2022-01-10 18:07:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:07:47,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:47,318 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 18:07:47,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:07:47,319 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:47,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:47,319 INFO L85 PathProgramCache]: Analyzing trace with hash -418973359, now seen corresponding path program 1 times [2022-01-10 18:07:47,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:47,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436427680] [2022-01-10 18:07:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:47,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:47,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:47,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436427680] [2022-01-10 18:07:47,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436427680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:47,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:47,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:47,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111125551] [2022-01-10 18:07:47,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:47,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:47,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:47,399 INFO L87 Difference]: Start difference. First operand 808 states and 1366 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 18:07:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:47,544 INFO L93 Difference]: Finished difference Result 2358 states and 3998 transitions. [2022-01-10 18:07:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:47,545 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 18:07:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:47,551 INFO L225 Difference]: With dead ends: 2358 [2022-01-10 18:07:47,551 INFO L226 Difference]: Without dead ends: 1584 [2022-01-10 18:07:47,552 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 18:07:47,553 INFO L933 BasicCegarLoop]: 1375 mSDtfsCounter, 6546 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6546 SdHoareTripleChecker+Valid, 2764 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 18:07:47,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6546 Valid, 2764 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2022-01-10 18:07:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 808. [2022-01-10 18:07:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 802 states have (on average 1.7007481296758105) internal successors, (1364), 807 states have internal predecessors, (1364), 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 18:07:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1364 transitions. [2022-01-10 18:07:47,599 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1364 transitions. Word has length 65 [2022-01-10 18:07:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:47,599 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1364 transitions. [2022-01-10 18:07:47,599 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 18:07:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1364 transitions. [2022-01-10 18:07:47,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:07:47,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:47,600 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 18:07:47,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:07:47,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1887425902, now seen corresponding path program 1 times [2022-01-10 18:07:47,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:47,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347518454] [2022-01-10 18:07:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:47,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:47,741 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 18:07:47,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:47,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347518454] [2022-01-10 18:07:47,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347518454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:47,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:47,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612723472] [2022-01-10 18:07:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:47,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:07:47,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:07:47,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:47,743 INFO L87 Difference]: Start difference. First operand 808 states and 1364 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 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 18:07:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:48,632 INFO L93 Difference]: Finished difference Result 3910 states and 6441 transitions. [2022-01-10 18:07:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:07:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 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 18:07:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:48,645 INFO L225 Difference]: With dead ends: 3910 [2022-01-10 18:07:48,645 INFO L226 Difference]: Without dead ends: 3457 [2022-01-10 18:07:48,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:48,648 INFO L933 BasicCegarLoop]: 2119 mSDtfsCounter, 9308 mSDsluCounter, 11940 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9308 SdHoareTripleChecker+Valid, 14059 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:48,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9308 Valid, 14059 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:07:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2022-01-10 18:07:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 1492. [2022-01-10 18:07:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1486 states have (on average 1.7099596231493943) internal successors, (2541), 1491 states have internal predecessors, (2541), 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 18:07:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2541 transitions. [2022-01-10 18:07:48,756 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2541 transitions. Word has length 67 [2022-01-10 18:07:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:48,758 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 2541 transitions. [2022-01-10 18:07:48,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 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 18:07:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2541 transitions. [2022-01-10 18:07:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:07:48,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:48,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:48,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:07:48,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash 687799134, now seen corresponding path program 1 times [2022-01-10 18:07:48,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:48,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587854194] [2022-01-10 18:07:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:48,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:48,896 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 18:07:48,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587854194] [2022-01-10 18:07:48,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587854194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:48,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:48,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:48,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511152818] [2022-01-10 18:07:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:48,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:07:48,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:07:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:48,898 INFO L87 Difference]: Start difference. First operand 1492 states and 2541 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:49,933 INFO L93 Difference]: Finished difference Result 6599 states and 10963 transitions. [2022-01-10 18:07:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:07:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:07:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:49,950 INFO L225 Difference]: With dead ends: 6599 [2022-01-10 18:07:49,950 INFO L226 Difference]: Without dead ends: 5785 [2022-01-10 18:07:49,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:49,952 INFO L933 BasicCegarLoop]: 1983 mSDtfsCounter, 11195 mSDsluCounter, 9946 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11195 SdHoareTripleChecker+Valid, 11929 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:49,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11195 Valid, 11929 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:07:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2022-01-10 18:07:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 2870. [2022-01-10 18:07:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2864 states have (on average 1.7147346368715084) internal successors, (4911), 2869 states have internal predecessors, (4911), 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 18:07:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4911 transitions. [2022-01-10 18:07:50,133 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4911 transitions. Word has length 68 [2022-01-10 18:07:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:50,134 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 4911 transitions. [2022-01-10 18:07:50,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4911 transitions. [2022-01-10 18:07:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:07:50,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:50,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:50,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:07:50,136 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:50,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1350257155, now seen corresponding path program 1 times [2022-01-10 18:07:50,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:50,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864986763] [2022-01-10 18:07:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:50,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:50,221 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 18:07:50,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:50,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864986763] [2022-01-10 18:07:50,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864986763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:50,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:50,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:50,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507663190] [2022-01-10 18:07:50,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:50,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:50,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:50,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:50,222 INFO L87 Difference]: Start difference. First operand 2870 states and 4911 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:51,069 INFO L93 Difference]: Finished difference Result 11850 states and 19539 transitions. [2022-01-10 18:07:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:07:51,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:51,116 INFO L225 Difference]: With dead ends: 11850 [2022-01-10 18:07:51,116 INFO L226 Difference]: Without dead ends: 10472 [2022-01-10 18:07:51,121 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 18:07:51,121 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 5623 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5623 SdHoareTripleChecker+Valid, 6085 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:51,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5623 Valid, 6085 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:07:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2022-01-10 18:07:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 4500. [2022-01-10 18:07:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4500 states, 4494 states have (on average 1.6757899421450824) internal successors, (7531), 4499 states have internal predecessors, (7531), 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 18:07:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 7531 transitions. [2022-01-10 18:07:51,435 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 7531 transitions. Word has length 68 [2022-01-10 18:07:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:51,436 INFO L470 AbstractCegarLoop]: Abstraction has 4500 states and 7531 transitions. [2022-01-10 18:07:51,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 7531 transitions. [2022-01-10 18:07:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:07:51,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:51,438 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] [2022-01-10 18:07:51,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:07:51,439 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1056152651, now seen corresponding path program 1 times [2022-01-10 18:07:51,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:51,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950361153] [2022-01-10 18:07:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:51,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:51,540 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 18:07:51,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:51,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950361153] [2022-01-10 18:07:51,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950361153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:51,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:51,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:51,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665796870] [2022-01-10 18:07:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:51,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:51,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:51,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:51,544 INFO L87 Difference]: Start difference. First operand 4500 states and 7531 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 18:07:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:52,167 INFO L93 Difference]: Finished difference Result 9184 states and 15140 transitions. [2022-01-10 18:07:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:07:52,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2022-01-10 18:07:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:52,180 INFO L225 Difference]: With dead ends: 9184 [2022-01-10 18:07:52,180 INFO L226 Difference]: Without dead ends: 6340 [2022-01-10 18:07:52,184 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 18:07:52,184 INFO L933 BasicCegarLoop]: 1400 mSDtfsCounter, 5250 mSDsluCounter, 5101 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 6501 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:52,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 6501 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:52,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2022-01-10 18:07:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 4296. [2022-01-10 18:07:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4290 states have (on average 1.6715617715617717) internal successors, (7171), 4295 states have internal predecessors, (7171), 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 18:07:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 7171 transitions. [2022-01-10 18:07:52,520 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 7171 transitions. Word has length 69 [2022-01-10 18:07:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:52,520 INFO L470 AbstractCegarLoop]: Abstraction has 4296 states and 7171 transitions. [2022-01-10 18:07:52,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 18:07:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 7171 transitions. [2022-01-10 18:07:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:07:52,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:52,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:52,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:07:52,523 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash -595120379, now seen corresponding path program 1 times [2022-01-10 18:07:52,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:52,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786467007] [2022-01-10 18:07:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:52,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:52,608 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 18:07:52,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:52,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786467007] [2022-01-10 18:07:52,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786467007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:52,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:52,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:52,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810707772] [2022-01-10 18:07:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:52,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:07:52,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:07:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:07:52,610 INFO L87 Difference]: Start difference. First operand 4296 states and 7171 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:53,320 INFO L93 Difference]: Finished difference Result 11360 states and 18429 transitions. [2022-01-10 18:07:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:53,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 18:07:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:53,337 INFO L225 Difference]: With dead ends: 11360 [2022-01-10 18:07:53,337 INFO L226 Difference]: Without dead ends: 8408 [2022-01-10 18:07:53,343 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 18:07:53,343 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 1184 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:53,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 4398 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:53,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8408 states. [2022-01-10 18:07:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8408 to 4352. [2022-01-10 18:07:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4346 states have (on average 1.6629084215370455) internal successors, (7227), 4351 states have internal predecessors, (7227), 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 18:07:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 7227 transitions. [2022-01-10 18:07:53,684 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 7227 transitions. Word has length 72 [2022-01-10 18:07:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:53,684 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 7227 transitions. [2022-01-10 18:07:53,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 7227 transitions. [2022-01-10 18:07:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:07:53,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:53,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:53,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:07:53,687 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash 142776900, now seen corresponding path program 1 times [2022-01-10 18:07:53,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:53,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644942661] [2022-01-10 18:07:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:53,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:53,779 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 18:07:53,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:53,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644942661] [2022-01-10 18:07:53,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644942661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:53,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:53,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:53,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634100393] [2022-01-10 18:07:53,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:53,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:53,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:53,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:53,780 INFO L87 Difference]: Start difference. First operand 4352 states and 7227 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:54,991 INFO L93 Difference]: Finished difference Result 13886 states and 22521 transitions. [2022-01-10 18:07:54,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:54,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 18:07:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:55,011 INFO L225 Difference]: With dead ends: 13886 [2022-01-10 18:07:55,011 INFO L226 Difference]: Without dead ends: 10830 [2022-01-10 18:07:55,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 18:07:55,019 INFO L933 BasicCegarLoop]: 1299 mSDtfsCounter, 5362 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5362 SdHoareTripleChecker+Valid, 5823 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:55,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5362 Valid, 5823 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:07:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10830 states. [2022-01-10 18:07:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10830 to 6215. [2022-01-10 18:07:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6215 states, 6209 states have (on average 1.6516347237880495) internal successors, (10255), 6214 states have internal predecessors, (10255), 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 18:07:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 10255 transitions. [2022-01-10 18:07:55,555 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 10255 transitions. Word has length 72 [2022-01-10 18:07:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:55,556 INFO L470 AbstractCegarLoop]: Abstraction has 6215 states and 10255 transitions. [2022-01-10 18:07:55,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 10255 transitions. [2022-01-10 18:07:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:07:55,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:55,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:55,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:07:55,560 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:55,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash 72319146, now seen corresponding path program 1 times [2022-01-10 18:07:55,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:55,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020204596] [2022-01-10 18:07:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:55,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:55,635 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 18:07:55,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:55,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020204596] [2022-01-10 18:07:55,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020204596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:55,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:55,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:55,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284480528] [2022-01-10 18:07:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:55,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:55,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:55,636 INFO L87 Difference]: Start difference. First operand 6215 states and 10255 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:58,066 INFO L93 Difference]: Finished difference Result 30111 states and 48907 transitions. [2022-01-10 18:07:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:58,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 18:07:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:58,110 INFO L225 Difference]: With dead ends: 30111 [2022-01-10 18:07:58,110 INFO L226 Difference]: Without dead ends: 25433 [2022-01-10 18:07:58,122 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 18:07:58,123 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 4985 mSDsluCounter, 4571 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 5981 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:58,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 5981 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25433 states. [2022-01-10 18:07:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25433 to 12189. [2022-01-10 18:07:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12189 states, 12183 states have (on average 1.6546827546581302) internal successors, (20159), 12188 states have internal predecessors, (20159), 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 18:07:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12189 states to 12189 states and 20159 transitions. [2022-01-10 18:07:59,172 INFO L78 Accepts]: Start accepts. Automaton has 12189 states and 20159 transitions. Word has length 72 [2022-01-10 18:07:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:59,173 INFO L470 AbstractCegarLoop]: Abstraction has 12189 states and 20159 transitions. [2022-01-10 18:07:59,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12189 states and 20159 transitions. [2022-01-10 18:07:59,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:07:59,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:59,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:59,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:07:59,178 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:59,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1627119538, now seen corresponding path program 1 times [2022-01-10 18:07:59,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:59,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639487199] [2022-01-10 18:07:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:59,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:59,262 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 18:07:59,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:59,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639487199] [2022-01-10 18:07:59,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639487199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:59,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:59,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:59,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648268752] [2022-01-10 18:07:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:59,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:59,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:59,263 INFO L87 Difference]: Start difference. First operand 12189 states and 20159 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:03,648 INFO L93 Difference]: Finished difference Result 49017 states and 79361 transitions. [2022-01-10 18:08:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:08:03,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:08:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:03,711 INFO L225 Difference]: With dead ends: 49017 [2022-01-10 18:08:03,711 INFO L226 Difference]: Without dead ends: 42045 [2022-01-10 18:08:03,727 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 18:08:03,729 INFO L933 BasicCegarLoop]: 2534 mSDtfsCounter, 4045 mSDsluCounter, 5062 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4045 SdHoareTripleChecker+Valid, 7596 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:03,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4045 Valid, 7596 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:08:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42045 states. [2022-01-10 18:08:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42045 to 18722. [2022-01-10 18:08:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18722 states, 18716 states have (on average 1.6405214789484932) internal successors, (30704), 18721 states have internal predecessors, (30704), 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 18:08:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18722 states to 18722 states and 30704 transitions. [2022-01-10 18:08:05,533 INFO L78 Accepts]: Start accepts. Automaton has 18722 states and 30704 transitions. Word has length 73 [2022-01-10 18:08:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:05,533 INFO L470 AbstractCegarLoop]: Abstraction has 18722 states and 30704 transitions. [2022-01-10 18:08:05,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 18722 states and 30704 transitions. [2022-01-10 18:08:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:08:05,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:05,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:05,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:08:05,540 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash -336844032, now seen corresponding path program 1 times [2022-01-10 18:08:05,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:05,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874537804] [2022-01-10 18:08:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:05,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:05,611 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 18:08:05,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:05,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874537804] [2022-01-10 18:08:05,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874537804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:05,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:05,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:08:05,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540542515] [2022-01-10 18:08:05,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:05,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:08:05,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:08:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:08:05,613 INFO L87 Difference]: Start difference. First operand 18722 states and 30704 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:07,541 INFO L93 Difference]: Finished difference Result 32648 states and 53263 transitions. [2022-01-10 18:08:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:08:07,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:08:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:07,567 INFO L225 Difference]: With dead ends: 32648 [2022-01-10 18:08:07,567 INFO L226 Difference]: Without dead ends: 18880 [2022-01-10 18:08:07,579 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 18:08:07,579 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 3589 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3589 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:07,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3589 Valid, 2734 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:08:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18880 states. [2022-01-10 18:08:09,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18880 to 18722. [2022-01-10 18:08:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18722 states, 18716 states have (on average 1.6394528745458432) internal successors, (30684), 18721 states have internal predecessors, (30684), 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 18:08:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18722 states to 18722 states and 30684 transitions. [2022-01-10 18:08:09,351 INFO L78 Accepts]: Start accepts. Automaton has 18722 states and 30684 transitions. Word has length 73 [2022-01-10 18:08:09,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:09,351 INFO L470 AbstractCegarLoop]: Abstraction has 18722 states and 30684 transitions. [2022-01-10 18:08:09,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 18722 states and 30684 transitions. [2022-01-10 18:08:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:08:09,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:09,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:09,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:08:09,361 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash 508381589, now seen corresponding path program 1 times [2022-01-10 18:08:09,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:09,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814684696] [2022-01-10 18:08:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:09,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:09,426 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 18:08:09,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:09,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814684696] [2022-01-10 18:08:09,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814684696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:09,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:09,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:08:09,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968327748] [2022-01-10 18:08:09,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:09,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:08:09,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:08:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:08:09,427 INFO L87 Difference]: Start difference. First operand 18722 states and 30684 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:11,643 INFO L93 Difference]: Finished difference Result 26174 states and 42789 transitions. [2022-01-10 18:08:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:08:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:08:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:11,678 INFO L225 Difference]: With dead ends: 26174 [2022-01-10 18:08:11,678 INFO L226 Difference]: Without dead ends: 23586 [2022-01-10 18:08:11,685 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 18:08:11,686 INFO L933 BasicCegarLoop]: 1351 mSDtfsCounter, 2275 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:11,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2275 Valid, 3041 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:08:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23586 states. [2022-01-10 18:08:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23586 to 18722. [2022-01-10 18:08:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18722 states, 18716 states have (on average 1.639239153665313) internal successors, (30680), 18721 states have internal predecessors, (30680), 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 18:08:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18722 states to 18722 states and 30680 transitions. [2022-01-10 18:08:13,491 INFO L78 Accepts]: Start accepts. Automaton has 18722 states and 30680 transitions. Word has length 73 [2022-01-10 18:08:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:13,491 INFO L470 AbstractCegarLoop]: Abstraction has 18722 states and 30680 transitions. [2022-01-10 18:08:13,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18722 states and 30680 transitions. [2022-01-10 18:08:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:08:13,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:13,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:13,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:08:13,497 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1836285452, now seen corresponding path program 1 times [2022-01-10 18:08:13,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:13,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506701235] [2022-01-10 18:08:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:13,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:13,572 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 18:08:13,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:13,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506701235] [2022-01-10 18:08:13,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506701235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:13,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:13,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:08:13,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649179735] [2022-01-10 18:08:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:13,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:08:13,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:08:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:08:13,573 INFO L87 Difference]: Start difference. First operand 18722 states and 30680 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:18,698 INFO L93 Difference]: Finished difference Result 50612 states and 81919 transitions. [2022-01-10 18:08:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:08:18,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:08:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:18,768 INFO L225 Difference]: With dead ends: 50612 [2022-01-10 18:08:18,768 INFO L226 Difference]: Without dead ends: 46130 [2022-01-10 18:08:18,785 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 18:08:18,786 INFO L933 BasicCegarLoop]: 2431 mSDtfsCounter, 4958 mSDsluCounter, 6213 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 8644 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:18,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 8644 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:08:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46130 states. [2022-01-10 18:08:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46130 to 22677. [2022-01-10 18:08:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22677 states, 22671 states have (on average 1.6360548718627321) internal successors, (37091), 22676 states have internal predecessors, (37091), 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 18:08:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22677 states to 22677 states and 37091 transitions. [2022-01-10 18:08:21,303 INFO L78 Accepts]: Start accepts. Automaton has 22677 states and 37091 transitions. Word has length 73 [2022-01-10 18:08:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:21,303 INFO L470 AbstractCegarLoop]: Abstraction has 22677 states and 37091 transitions. [2022-01-10 18:08:21,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 22677 states and 37091 transitions. [2022-01-10 18:08:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:08:21,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:21,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:21,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:08:21,309 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash -787993131, now seen corresponding path program 1 times [2022-01-10 18:08:21,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:21,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017366219] [2022-01-10 18:08:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:21,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:21,381 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 18:08:21,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017366219] [2022-01-10 18:08:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017366219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:21,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:21,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:08:21,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680302857] [2022-01-10 18:08:21,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:21,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:08:21,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:08:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:08:21,382 INFO L87 Difference]: Start difference. First operand 22677 states and 37091 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:24,542 INFO L93 Difference]: Finished difference Result 45033 states and 73192 transitions. [2022-01-10 18:08:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:08:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 18:08:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:24,595 INFO L225 Difference]: With dead ends: 45033 [2022-01-10 18:08:24,596 INFO L226 Difference]: Without dead ends: 28463 [2022-01-10 18:08:24,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:08:24,618 INFO L933 BasicCegarLoop]: 1302 mSDtfsCounter, 4110 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 4434 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:24,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4110 Valid, 4434 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:08:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28463 states. [2022-01-10 18:08:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28463 to 18771. [2022-01-10 18:08:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18771 states, 18765 states have (on average 1.6312816413535838) internal successors, (30611), 18770 states have internal predecessors, (30611), 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 18:08:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18771 states to 18771 states and 30611 transitions. [2022-01-10 18:08:26,649 INFO L78 Accepts]: Start accepts. Automaton has 18771 states and 30611 transitions. Word has length 74 [2022-01-10 18:08:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:26,650 INFO L470 AbstractCegarLoop]: Abstraction has 18771 states and 30611 transitions. [2022-01-10 18:08:26,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand 18771 states and 30611 transitions. [2022-01-10 18:08:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:08:26,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:26,655 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] [2022-01-10 18:08:26,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:08:26,655 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:26,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:26,655 INFO L85 PathProgramCache]: Analyzing trace with hash 894535910, now seen corresponding path program 1 times [2022-01-10 18:08:26,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:26,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368069414] [2022-01-10 18:08:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:26,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:26,704 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 18:08:26,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:26,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368069414] [2022-01-10 18:08:26,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368069414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:26,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:26,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:08:26,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755156193] [2022-01-10 18:08:26,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:26,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:08:26,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:08:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:08:26,706 INFO L87 Difference]: Start difference. First operand 18771 states and 30611 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 18:08:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:29,406 INFO L93 Difference]: Finished difference Result 38313 states and 61769 transitions. [2022-01-10 18:08:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:08:29,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-10 18:08:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:29,437 INFO L225 Difference]: With dead ends: 38313 [2022-01-10 18:08:29,438 INFO L226 Difference]: Without dead ends: 23119 [2022-01-10 18:08:29,449 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 18:08:29,449 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 627 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:29,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 2557 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:08:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23119 states. [2022-01-10 18:08:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23119 to 18771. [2022-01-10 18:08:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18771 states, 18765 states have (on average 1.6181721289634958) internal successors, (30365), 18770 states have internal predecessors, (30365), 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 18:08:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18771 states to 18771 states and 30365 transitions. [2022-01-10 18:08:31,556 INFO L78 Accepts]: Start accepts. Automaton has 18771 states and 30365 transitions. Word has length 80 [2022-01-10 18:08:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:31,556 INFO L470 AbstractCegarLoop]: Abstraction has 18771 states and 30365 transitions. [2022-01-10 18:08:31,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 18:08:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 18771 states and 30365 transitions. [2022-01-10 18:08:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:08:31,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:31,561 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] [2022-01-10 18:08:31,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:08:31,562 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash 955211209, now seen corresponding path program 1 times [2022-01-10 18:08:31,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:31,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476613218] [2022-01-10 18:08:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:31,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:31,629 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 18:08:31,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476613218] [2022-01-10 18:08:31,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476613218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:31,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:31,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:08:31,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651609698] [2022-01-10 18:08:31,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:31,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:08:31,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:31,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:08:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:08:31,630 INFO L87 Difference]: Start difference. First operand 18771 states and 30365 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 18:08:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:34,772 INFO L93 Difference]: Finished difference Result 44153 states and 71209 transitions. [2022-01-10 18:08:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:08:34,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-01-10 18:08:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:34,823 INFO L225 Difference]: With dead ends: 44153 [2022-01-10 18:08:34,823 INFO L226 Difference]: Without dead ends: 28799 [2022-01-10 18:08:34,839 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 18:08:34,840 INFO L933 BasicCegarLoop]: 1413 mSDtfsCounter, 1912 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 5461 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:34,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1912 Valid, 5461 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:08:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28799 states. [2022-01-10 18:08:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28799 to 22421. [2022-01-10 18:08:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22421 states, 22415 states have (on average 1.6236002676778942) internal successors, (36393), 22420 states have internal predecessors, (36393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22421 states to 22421 states and 36393 transitions. [2022-01-10 18:08:37,354 INFO L78 Accepts]: Start accepts. Automaton has 22421 states and 36393 transitions. Word has length 81 [2022-01-10 18:08:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:37,355 INFO L470 AbstractCegarLoop]: Abstraction has 22421 states and 36393 transitions. [2022-01-10 18:08:37,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 18:08:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 22421 states and 36393 transitions. [2022-01-10 18:08:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:08:37,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:37,362 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:37,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:08:37,362 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2142591735, now seen corresponding path program 1 times [2022-01-10 18:08:37,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:37,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352628871] [2022-01-10 18:08:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:37,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:37,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352628871] [2022-01-10 18:08:37,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352628871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:37,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:37,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:08:37,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117606366] [2022-01-10 18:08:37,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:37,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:08:37,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:37,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:08:37,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:08:37,406 INFO L87 Difference]: Start difference. First operand 22421 states and 36393 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 18:08:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:42,080 INFO L93 Difference]: Finished difference Result 66357 states and 107545 transitions. [2022-01-10 18:08:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:08:42,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 18:08:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:42,145 INFO L225 Difference]: With dead ends: 66357 [2022-01-10 18:08:42,145 INFO L226 Difference]: Without dead ends: 43973 [2022-01-10 18:08:42,185 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 18:08:42,186 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 1266 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:42,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 2540 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:08:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43973 states. [2022-01-10 18:08:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43973 to 25765. [2022-01-10 18:08:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25765 states, 25759 states have (on average 1.647618308164137) internal successors, (42441), 25764 states have internal predecessors, (42441), 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 18:08:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25765 states to 25765 states and 42441 transitions. [2022-01-10 18:08:44,982 INFO L78 Accepts]: Start accepts. Automaton has 25765 states and 42441 transitions. Word has length 90 [2022-01-10 18:08:44,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:44,982 INFO L470 AbstractCegarLoop]: Abstraction has 25765 states and 42441 transitions. [2022-01-10 18:08:44,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 18:08:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 25765 states and 42441 transitions. [2022-01-10 18:08:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 18:08:44,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:44,992 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:44,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:08:44,993 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:44,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1852506400, now seen corresponding path program 1 times [2022-01-10 18:08:44,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:44,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198452552] [2022-01-10 18:08:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:44,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:45,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:45,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198452552] [2022-01-10 18:08:45,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198452552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:45,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:45,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:08:45,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367874962] [2022-01-10 18:08:45,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:45,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:08:45,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:45,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:08:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:08:45,050 INFO L87 Difference]: Start difference. First operand 25765 states and 42441 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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)