/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_spec0_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:59:40,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:59:40,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:59:40,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:59:40,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:59:40,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:59:40,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:59:40,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:59:40,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:59:40,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:59:40,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:59:40,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:59:40,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:59:40,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:59:40,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:59:40,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:59:40,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:59:40,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:59:40,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:59:40,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:59:40,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:59:40,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:59:40,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:59:40,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:59:40,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:59:40,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:59:40,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:59:40,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:59:40,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:59:40,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:59:40,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:59:40,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:59:40,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:59:40,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:59:40,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:59:40,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:59:40,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:59:40,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:59:40,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:59:40,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:59:40,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:59:40,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:59:40,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:59:40,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:59:40,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:59:40,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:59:40,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:59:40,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:59:40,713 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:59:40,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:59:40,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:59:40,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:59:40,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:59:40,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:59:40,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:59:40,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:59:40,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:59:40,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:59:40,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:59:40,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:59:40,717 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:59:40,717 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:59:40,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:59:40,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:59:40,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:59:40,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:59:40,954 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:59:40,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product25.cil.c [2022-01-10 17:59:41,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8751d4c/bd36bac0d633402f97e900f67f2c9409/FLAG253b86cf0 [2022-01-10 17:59:41,461 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:59:41,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product25.cil.c [2022-01-10 17:59:41,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8751d4c/bd36bac0d633402f97e900f67f2c9409/FLAG253b86cf0 [2022-01-10 17:59:41,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8751d4c/bd36bac0d633402f97e900f67f2c9409 [2022-01-10 17:59:41,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:59:41,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:59:41,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:59:41,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:59:41,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:59:41,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:59:41" (1/1) ... [2022-01-10 17:59:41,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7c55fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:41, skipping insertion in model container [2022-01-10 17:59:41,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:59:41" (1/1) ... [2022-01-10 17:59:41,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:59:41,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:59:42,130 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_spec0_product25.cil.c[43418,43431] [2022-01-10 17:59:42,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:42,195 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:59:42,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:59:42,278 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_spec0_product25.cil.c[43418,43431] [2022-01-10 17:59:42,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:42,331 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:59:42,393 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_spec0_product25.cil.c[43418,43431] [2022-01-10 17:59:42,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:42,431 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:59:42,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42 WrapperNode [2022-01-10 17:59:42,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:59:42,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:59:42,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:59:42,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:59:42,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,574 INFO L137 Inliner]: procedures = 132, calls = 217, calls flagged for inlining = 126, calls inlined = 304, statements flattened = 4448 [2022-01-10 17:59:42,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:59:42,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:59:42,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:59:42,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:59:42,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:59:42,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:59:42,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:59:42,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:59:42,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (1/1) ... [2022-01-10 17:59:42,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:59:42,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:59:42,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 17:59:42,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 17:59:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 17:59:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:59:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:59:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:59:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:59:43,033 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:59:43,035 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:59:44,508 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:59:44,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:59:44,522 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:59:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:44 BoogieIcfgContainer [2022-01-10 17:59:44,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:59:44,526 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:59:44,526 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:59:44,528 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:59:44,530 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:44" (1/1) ... [2022-01-10 17:59:45,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:45 BasicIcfg [2022-01-10 17:59:45,056 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:59:45,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:59:45,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:59:45,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:59:45,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:59:41" (1/4) ... [2022-01-10 17:59:45,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359822b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:45, skipping insertion in model container [2022-01-10 17:59:45,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:42" (2/4) ... [2022-01-10 17:59:45,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359822b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:45, skipping insertion in model container [2022-01-10 17:59:45,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:44" (3/4) ... [2022-01-10 17:59:45,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359822b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:59:45, skipping insertion in model container [2022-01-10 17:59:45,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:45" (4/4) ... [2022-01-10 17:59:45,064 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product25.cil.cTransformedIcfg [2022-01-10 17:59:45,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:59:45,078 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 17:59:45,136 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:59:45,144 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:59:45,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 17:59:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 948 states, 941 states have (on average 1.6663124335812964) internal successors, (1568), 947 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:45,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:59:45,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:45,193 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] [2022-01-10 17:59:45,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash 513312919, now seen corresponding path program 1 times [2022-01-10 17:59:45,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:45,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039136147] [2022-01-10 17:59:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:45,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:45,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:45,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039136147] [2022-01-10 17:59:45,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039136147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:45,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:45,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:45,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407863634] [2022-01-10 17:59:45,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:45,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 17:59:45,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:45,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 17:59:45,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:59:45,519 INFO L87 Difference]: Start difference. First operand has 948 states, 941 states have (on average 1.6663124335812964) internal successors, (1568), 947 states have internal predecessors, (1568), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:45,572 INFO L93 Difference]: Finished difference Result 1587 states and 2589 transitions. [2022-01-10 17:59:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 17:59:45,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 17:59:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:45,589 INFO L225 Difference]: With dead ends: 1587 [2022-01-10 17:59:45,589 INFO L226 Difference]: Without dead ends: 876 [2022-01-10 17:59:45,595 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 17:59:45,597 INFO L933 BasicCegarLoop]: 1554 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, 1554 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 17:59:45,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:45,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-01-10 17:59:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-01-10 17:59:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.6770114942528735) internal successors, (1459), 875 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1459 transitions. [2022-01-10 17:59:45,666 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1459 transitions. Word has length 58 [2022-01-10 17:59:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:45,666 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1459 transitions. [2022-01-10 17:59:45,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1459 transitions. [2022-01-10 17:59:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 17:59:45,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:45,669 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] [2022-01-10 17:59:45,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:59:45,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:45,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1983783625, now seen corresponding path program 1 times [2022-01-10 17:59:45,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:45,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769763090] [2022-01-10 17:59:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:45,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:45,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769763090] [2022-01-10 17:59:45,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769763090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:45,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:45,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:45,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276804811] [2022-01-10 17:59:45,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:45,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:45,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:45,871 INFO L87 Difference]: Start difference. First operand 876 states and 1459 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:45,982 INFO L93 Difference]: Finished difference Result 1733 states and 2890 transitions. [2022-01-10 17:59:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:45,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 17:59:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:45,993 INFO L225 Difference]: With dead ends: 1733 [2022-01-10 17:59:45,993 INFO L226 Difference]: Without dead ends: 876 [2022-01-10 17:59:45,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:45,995 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 1434 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:45,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1451 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-01-10 17:59:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-01-10 17:59:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.674712643678161) internal successors, (1457), 875 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1457 transitions. [2022-01-10 17:59:46,039 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1457 transitions. Word has length 59 [2022-01-10 17:59:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:46,040 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1457 transitions. [2022-01-10 17:59:46,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1457 transitions. [2022-01-10 17:59:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:59:46,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:46,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:46,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:59:46,042 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1311527305, now seen corresponding path program 1 times [2022-01-10 17:59:46,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:46,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854987744] [2022-01-10 17:59:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:46,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:46,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:46,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854987744] [2022-01-10 17:59:46,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854987744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:46,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:46,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:59:46,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218420174] [2022-01-10 17:59:46,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:46,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:46,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:46,217 INFO L87 Difference]: Start difference. First operand 876 states and 1457 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:46,717 INFO L93 Difference]: Finished difference Result 4248 states and 7081 transitions. [2022-01-10 17:59:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:59:46,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:59:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:46,742 INFO L225 Difference]: With dead ends: 4248 [2022-01-10 17:59:46,742 INFO L226 Difference]: Without dead ends: 3396 [2022-01-10 17:59:46,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:59:46,745 INFO L933 BasicCegarLoop]: 2837 mSDtfsCounter, 7068 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7068 SdHoareTripleChecker+Valid, 7080 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:46,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7068 Valid, 7080 Invalid, 82 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2022-01-10 17:59:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 876. [2022-01-10 17:59:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.6735632183908047) internal successors, (1456), 875 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1456 transitions. [2022-01-10 17:59:46,850 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1456 transitions. Word has length 61 [2022-01-10 17:59:46,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:46,850 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1456 transitions. [2022-01-10 17:59:46,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:46,850 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1456 transitions. [2022-01-10 17:59:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 17:59:46,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:46,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:46,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:59:46,852 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash 825123837, now seen corresponding path program 1 times [2022-01-10 17:59:46,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:46,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214203149] [2022-01-10 17:59:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:46,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:46,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214203149] [2022-01-10 17:59:46,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214203149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:46,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:46,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:46,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355766721] [2022-01-10 17:59:46,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:46,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:46,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:46,983 INFO L87 Difference]: Start difference. First operand 876 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:47,046 INFO L93 Difference]: Finished difference Result 1737 states and 2890 transitions. [2022-01-10 17:59:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:47,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 17:59:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:47,050 INFO L225 Difference]: With dead ends: 1737 [2022-01-10 17:59:47,050 INFO L226 Difference]: Without dead ends: 890 [2022-01-10 17:59:47,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:47,052 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 1435 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 1492 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 17:59:47,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1435 Valid, 1492 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-01-10 17:59:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 876. [2022-01-10 17:59:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.6724137931034482) internal successors, (1455), 875 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1455 transitions. [2022-01-10 17:59:47,097 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1455 transitions. Word has length 62 [2022-01-10 17:59:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:47,097 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1455 transitions. [2022-01-10 17:59:47,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1455 transitions. [2022-01-10 17:59:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 17:59:47,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:47,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:47,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:59:47,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -487774568, now seen corresponding path program 1 times [2022-01-10 17:59:47,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:47,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236199699] [2022-01-10 17:59:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:47,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:47,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236199699] [2022-01-10 17:59:47,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236199699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:47,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:47,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:59:47,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368184720] [2022-01-10 17:59:47,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:47,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:47,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:47,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:47,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:47,182 INFO L87 Difference]: Start difference. First operand 876 states and 1455 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 17:59:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:47,383 INFO L93 Difference]: Finished difference Result 2562 states and 4265 transitions. [2022-01-10 17:59:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:59:47,383 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 17:59:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:47,389 INFO L225 Difference]: With dead ends: 2562 [2022-01-10 17:59:47,389 INFO L226 Difference]: Without dead ends: 1720 [2022-01-10 17:59:47,391 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 17:59:47,391 INFO L933 BasicCegarLoop]: 1464 mSDtfsCounter, 6991 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6991 SdHoareTripleChecker+Valid, 2942 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 17:59:47,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6991 Valid, 2942 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:47,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2022-01-10 17:59:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 876. [2022-01-10 17:59:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.6701149425287356) internal successors, (1453), 875 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1453 transitions. [2022-01-10 17:59:47,438 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1453 transitions. Word has length 63 [2022-01-10 17:59:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:47,439 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1453 transitions. [2022-01-10 17:59:47,439 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 17:59:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1453 transitions. [2022-01-10 17:59:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:59:47,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:47,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:47,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:59:47,440 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 940286069, now seen corresponding path program 1 times [2022-01-10 17:59:47,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906047646] [2022-01-10 17:59:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:47,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:47,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:47,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906047646] [2022-01-10 17:59:47,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906047646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:47,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:59:47,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480499630] [2022-01-10 17:59:47,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:47,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:59:47,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:59:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:59:47,526 INFO L87 Difference]: Start difference. First operand 876 states and 1453 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:47,940 INFO L93 Difference]: Finished difference Result 5054 states and 8326 transitions. [2022-01-10 17:59:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:59:47,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 17:59:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:47,955 INFO L225 Difference]: With dead ends: 5054 [2022-01-10 17:59:47,955 INFO L226 Difference]: Without dead ends: 4500 [2022-01-10 17:59:47,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:59:47,957 INFO L933 BasicCegarLoop]: 2696 mSDtfsCounter, 8857 mSDsluCounter, 8731 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8857 SdHoareTripleChecker+Valid, 11427 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:47,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8857 Valid, 11427 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2022-01-10 17:59:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 1487. [2022-01-10 17:59:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1481 states have (on average 1.675219446320054) internal successors, (2481), 1486 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2481 transitions. [2022-01-10 17:59:48,042 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2481 transitions. Word has length 65 [2022-01-10 17:59:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:48,042 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 2481 transitions. [2022-01-10 17:59:48,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2481 transitions. [2022-01-10 17:59:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 17:59:48,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:48,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:48,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:59:48,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1903648755, now seen corresponding path program 1 times [2022-01-10 17:59:48,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:48,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322212999] [2022-01-10 17:59:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:48,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:48,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:48,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322212999] [2022-01-10 17:59:48,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322212999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:48,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:48,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:59:48,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264021184] [2022-01-10 17:59:48,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:48,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:48,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:48,142 INFO L87 Difference]: Start difference. First operand 1487 states and 2481 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:48,300 INFO L93 Difference]: Finished difference Result 2605 states and 4282 transitions. [2022-01-10 17:59:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:59:48,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 17:59:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:48,306 INFO L225 Difference]: With dead ends: 2605 [2022-01-10 17:59:48,306 INFO L226 Difference]: Without dead ends: 1734 [2022-01-10 17:59:48,308 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 17:59:48,308 INFO L933 BasicCegarLoop]: 1435 mSDtfsCounter, 4039 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4039 SdHoareTripleChecker+Valid, 2891 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 17:59:48,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4039 Valid, 2891 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-01-10 17:59:48,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1487. [2022-01-10 17:59:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1481 states have (on average 1.6725185685347739) internal successors, (2477), 1486 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2477 transitions. [2022-01-10 17:59:48,426 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2477 transitions. Word has length 66 [2022-01-10 17:59:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:48,427 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 2477 transitions. [2022-01-10 17:59:48,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2477 transitions. [2022-01-10 17:59:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 17:59:48,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:48,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:48,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:59:48,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1044511799, now seen corresponding path program 1 times [2022-01-10 17:59:48,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:48,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670839231] [2022-01-10 17:59:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:48,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:48,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:48,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670839231] [2022-01-10 17:59:48,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670839231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:48,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:48,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:59:48,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129232059] [2022-01-10 17:59:48,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:48,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:48,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:48,497 INFO L87 Difference]: Start difference. First operand 1487 states and 2477 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:48,737 INFO L93 Difference]: Finished difference Result 4338 states and 7260 transitions. [2022-01-10 17:59:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:59:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 17:59:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:48,746 INFO L225 Difference]: With dead ends: 4338 [2022-01-10 17:59:48,746 INFO L226 Difference]: Without dead ends: 2888 [2022-01-10 17:59:48,749 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 17:59:48,749 INFO L933 BasicCegarLoop]: 2805 mSDtfsCounter, 4290 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:48,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4290 Valid, 4209 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2022-01-10 17:59:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1487. [2022-01-10 17:59:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1481 states have (on average 1.6711681296421337) internal successors, (2475), 1486 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2475 transitions. [2022-01-10 17:59:48,891 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2475 transitions. Word has length 66 [2022-01-10 17:59:48,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:48,891 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 2475 transitions. [2022-01-10 17:59:48,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2475 transitions. [2022-01-10 17:59:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 17:59:48,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:48,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:48,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:59:48,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash 656021636, now seen corresponding path program 1 times [2022-01-10 17:59:48,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:48,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172494533] [2022-01-10 17:59:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:48,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:48,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:48,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172494533] [2022-01-10 17:59:48,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172494533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:48,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:48,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:48,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542695494] [2022-01-10 17:59:48,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:48,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:59:48,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:59:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:59:48,991 INFO L87 Difference]: Start difference. First operand 1487 states and 2475 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:49,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:49,319 INFO L93 Difference]: Finished difference Result 2126 states and 3472 transitions. [2022-01-10 17:59:49,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:59:49,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 17:59:49,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:49,324 INFO L225 Difference]: With dead ends: 2126 [2022-01-10 17:59:49,324 INFO L226 Difference]: Without dead ends: 1487 [2022-01-10 17:59:49,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:49,326 INFO L933 BasicCegarLoop]: 1421 mSDtfsCounter, 1584 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:49,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 2695 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2022-01-10 17:59:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1487. [2022-01-10 17:59:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1481 states have (on average 1.6650911546252531) internal successors, (2466), 1486 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2466 transitions. [2022-01-10 17:59:49,515 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2466 transitions. Word has length 67 [2022-01-10 17:59:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:49,515 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 2466 transitions. [2022-01-10 17:59:49,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2466 transitions. [2022-01-10 17:59:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:59:49,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:49,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:49,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:59:49,517 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash 974014353, now seen corresponding path program 1 times [2022-01-10 17:59:49,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:49,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878269754] [2022-01-10 17:59:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:49,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:49,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:49,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878269754] [2022-01-10 17:59:49,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878269754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:49,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:49,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 17:59:49,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691514588] [2022-01-10 17:59:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:49,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 17:59:49,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 17:59:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 17:59:49,642 INFO L87 Difference]: Start difference. First operand 1487 states and 2466 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:51,159 INFO L93 Difference]: Finished difference Result 7673 states and 12145 transitions. [2022-01-10 17:59:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-10 17:59:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 17:59:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:51,180 INFO L225 Difference]: With dead ends: 7673 [2022-01-10 17:59:51,180 INFO L226 Difference]: Without dead ends: 7058 [2022-01-10 17:59:51,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=416, Invalid=1066, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 17:59:51,183 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 13483 mSDsluCounter, 17535 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13483 SdHoareTripleChecker+Valid, 20141 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:51,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13483 Valid, 20141 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 17:59:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7058 states. [2022-01-10 17:59:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7058 to 2590. [2022-01-10 17:59:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2584 states have (on average 1.640092879256966) internal successors, (4238), 2589 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 4238 transitions. [2022-01-10 17:59:51,436 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 4238 transitions. Word has length 70 [2022-01-10 17:59:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:51,437 INFO L470 AbstractCegarLoop]: Abstraction has 2590 states and 4238 transitions. [2022-01-10 17:59:51,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 4238 transitions. [2022-01-10 17:59:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:59:51,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:51,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:51,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:59:51,439 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1316717143, now seen corresponding path program 1 times [2022-01-10 17:59:51,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:51,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412720630] [2022-01-10 17:59:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:51,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:51,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:51,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412720630] [2022-01-10 17:59:51,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412720630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:51,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:51,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:51,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79888742] [2022-01-10 17:59:51,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:51,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:51,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:51,578 INFO L87 Difference]: Start difference. First operand 2590 states and 4238 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:52,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:52,438 INFO L93 Difference]: Finished difference Result 9634 states and 15660 transitions. [2022-01-10 17:59:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:59:52,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:59:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:52,504 INFO L225 Difference]: With dead ends: 9634 [2022-01-10 17:59:52,505 INFO L226 Difference]: Without dead ends: 8336 [2022-01-10 17:59:52,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:59:52,510 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 4000 mSDsluCounter, 4655 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4000 SdHoareTripleChecker+Valid, 6308 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:52,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4000 Valid, 6308 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8336 states. [2022-01-10 17:59:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8336 to 5148. [2022-01-10 17:59:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 5142 states have (on average 1.6382730455075847) internal successors, (8424), 5147 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 8424 transitions. [2022-01-10 17:59:53,014 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 8424 transitions. Word has length 71 [2022-01-10 17:59:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:53,015 INFO L470 AbstractCegarLoop]: Abstraction has 5148 states and 8424 transitions. [2022-01-10 17:59:53,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 8424 transitions. [2022-01-10 17:59:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:59:53,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:53,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:53,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:59:53,019 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1250216318, now seen corresponding path program 1 times [2022-01-10 17:59:53,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:53,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655988783] [2022-01-10 17:59:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:53,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:53,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:53,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655988783] [2022-01-10 17:59:53,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655988783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:53,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:53,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:59:53,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924916333] [2022-01-10 17:59:53,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:59:53,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:59:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:59:53,176 INFO L87 Difference]: Start difference. First operand 5148 states and 8424 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:53,939 INFO L93 Difference]: Finished difference Result 10162 states and 16299 transitions. [2022-01-10 17:59:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 17:59:53,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:59:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:53,985 INFO L225 Difference]: With dead ends: 10162 [2022-01-10 17:59:53,986 INFO L226 Difference]: Without dead ends: 6562 [2022-01-10 17:59:53,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-01-10 17:59:53,991 INFO L933 BasicCegarLoop]: 1408 mSDtfsCounter, 5535 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5535 SdHoareTripleChecker+Valid, 6346 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:53,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5535 Valid, 6346 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2022-01-10 17:59:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5148. [2022-01-10 17:59:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 5142 states have (on average 1.632049786075457) internal successors, (8392), 5147 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 8392 transitions. [2022-01-10 17:59:54,472 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 8392 transitions. Word has length 71 [2022-01-10 17:59:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:54,473 INFO L470 AbstractCegarLoop]: Abstraction has 5148 states and 8392 transitions. [2022-01-10 17:59:54,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 8392 transitions. [2022-01-10 17:59:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:59:54,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:54,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:54,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:59:54,479 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:54,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2047678625, now seen corresponding path program 1 times [2022-01-10 17:59:54,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:54,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962723056] [2022-01-10 17:59:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:54,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:54,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:54,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962723056] [2022-01-10 17:59:54,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962723056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:54,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:54,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:59:54,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639288348] [2022-01-10 17:59:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:54,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:59:54,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:59:54,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:59:54,591 INFO L87 Difference]: Start difference. First operand 5148 states and 8392 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:55,882 INFO L93 Difference]: Finished difference Result 12024 states and 19278 transitions. [2022-01-10 17:59:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:59:55,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:59:55,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:55,901 INFO L225 Difference]: With dead ends: 12024 [2022-01-10 17:59:55,901 INFO L226 Difference]: Without dead ends: 9110 [2022-01-10 17:59:55,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:59:55,908 INFO L933 BasicCegarLoop]: 2634 mSDtfsCounter, 2315 mSDsluCounter, 7709 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 10343 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:55,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 10343 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:59:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9110 states. [2022-01-10 17:59:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9110 to 5780. [2022-01-10 17:59:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5780 states, 5774 states have (on average 1.6210599237963284) internal successors, (9360), 5779 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 9360 transitions. [2022-01-10 17:59:56,408 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 9360 transitions. Word has length 71 [2022-01-10 17:59:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:56,409 INFO L470 AbstractCegarLoop]: Abstraction has 5780 states and 9360 transitions. [2022-01-10 17:59:56,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 9360 transitions. [2022-01-10 17:59:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:59:56,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:56,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:56,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:59:56,413 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:56,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash 370656428, now seen corresponding path program 1 times [2022-01-10 17:59:56,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:56,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491448594] [2022-01-10 17:59:56,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:56,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:56,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:56,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491448594] [2022-01-10 17:59:56,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491448594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:56,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:56,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:56,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687038401] [2022-01-10 17:59:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:56,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:59:56,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:56,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:59:56,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:59:56,473 INFO L87 Difference]: Start difference. First operand 5780 states and 9360 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:57,165 INFO L93 Difference]: Finished difference Result 10022 states and 16000 transitions. [2022-01-10 17:59:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:59:57,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:59:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:57,178 INFO L225 Difference]: With dead ends: 10022 [2022-01-10 17:59:57,178 INFO L226 Difference]: Without dead ends: 7724 [2022-01-10 17:59:57,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:57,183 INFO L933 BasicCegarLoop]: 1429 mSDtfsCounter, 2464 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2464 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:57,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2464 Valid, 3201 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:57,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2022-01-10 17:59:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 5780. [2022-01-10 17:59:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5780 states, 5774 states have (on average 1.6203671631451333) internal successors, (9356), 5779 states have internal predecessors, (9356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 9356 transitions. [2022-01-10 17:59:57,781 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 9356 transitions. Word has length 71 [2022-01-10 17:59:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:57,781 INFO L470 AbstractCegarLoop]: Abstraction has 5780 states and 9356 transitions. [2022-01-10 17:59:57,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 9356 transitions. [2022-01-10 17:59:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:59:57,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:57,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:57,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:59:57,788 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 17:59:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1396148427, now seen corresponding path program 1 times [2022-01-10 17:59:57,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:57,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403118191] [2022-01-10 17:59:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:57,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:57,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:57,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403118191] [2022-01-10 17:59:57,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403118191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:57,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:57,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:59:57,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372156248] [2022-01-10 17:59:57,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:57,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:59:57,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:57,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:59:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:59:57,886 INFO L87 Difference]: Start difference. First operand 5780 states and 9356 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:59,627 INFO L93 Difference]: Finished difference Result 12422 states and 19845 transitions. [2022-01-10 17:59:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 17:59:59,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:59:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:59,643 INFO L225 Difference]: With dead ends: 12422 [2022-01-10 17:59:59,644 INFO L226 Difference]: Without dead ends: 10752 [2022-01-10 17:59:59,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-01-10 17:59:59,648 INFO L933 BasicCegarLoop]: 3186 mSDtfsCounter, 3759 mSDsluCounter, 11088 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3759 SdHoareTripleChecker+Valid, 14274 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:59,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3759 Valid, 14274 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 17:59:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10752 states. [2022-01-10 18:00:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10752 to 6538. [2022-01-10 18:00:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6538 states, 6532 states have (on average 1.6117575015309247) internal successors, (10528), 6537 states have internal predecessors, (10528), 0 states have call successors, (0), 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 18:00:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 10528 transitions. [2022-01-10 18:00:00,261 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 10528 transitions. Word has length 71 [2022-01-10 18:00:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:00,261 INFO L470 AbstractCegarLoop]: Abstraction has 6538 states and 10528 transitions. [2022-01-10 18:00:00,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:00:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 10528 transitions. [2022-01-10 18:00:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:00:00,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:00,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:00:00,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:00:00,264 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:00:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash 123938053, now seen corresponding path program 1 times [2022-01-10 18:00:00,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:00,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640560415] [2022-01-10 18:00:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:00,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:00,371 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 18:00:00,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640560415] [2022-01-10 18:00:00,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640560415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:00,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:00,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:00:00,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907529251] [2022-01-10 18:00:00,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:00,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:00:00,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:00:00,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:00:00,372 INFO L87 Difference]: Start difference. First operand 6538 states and 10528 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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 18:00:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:02,425 INFO L93 Difference]: Finished difference Result 14746 states and 23387 transitions. [2022-01-10 18:00:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-10 18:00:02,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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 18:00:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:02,439 INFO L225 Difference]: With dead ends: 14746 [2022-01-10 18:00:02,439 INFO L226 Difference]: Without dead ends: 11676 [2022-01-10 18:00:02,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=409, Invalid=1073, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 18:00:02,444 INFO L933 BasicCegarLoop]: 2591 mSDtfsCounter, 12349 mSDsluCounter, 12939 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12349 SdHoareTripleChecker+Valid, 15530 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:02,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12349 Valid, 15530 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:00:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11676 states. [2022-01-10 18:00:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11676 to 6055. [2022-01-10 18:00:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 6049 states have (on average 1.6166308480740619) internal successors, (9779), 6054 states have internal predecessors, (9779), 0 states have call successors, (0), 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 18:00:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 9779 transitions. [2022-01-10 18:00:03,137 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 9779 transitions. Word has length 72 [2022-01-10 18:00:03,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:03,137 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 9779 transitions. [2022-01-10 18:00:03,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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 18:00:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 9779 transitions. [2022-01-10 18:00:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:00:03,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:03,140 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] [2022-01-10 18:00:03,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:00:03,141 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:00:03,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:03,142 INFO L85 PathProgramCache]: Analyzing trace with hash -431611626, now seen corresponding path program 1 times [2022-01-10 18:00:03,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:03,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071831268] [2022-01-10 18:00:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:03,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:03,220 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 18:00:03,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:03,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071831268] [2022-01-10 18:00:03,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071831268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:03,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:03,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:00:03,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074596409] [2022-01-10 18:00:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:03,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:00:03,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:00:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:00:03,222 INFO L87 Difference]: Start difference. First operand 6055 states and 9779 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 18:00:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:04,424 INFO L93 Difference]: Finished difference Result 11724 states and 18662 transitions. [2022-01-10 18:00:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:00:04,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 18:00:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:04,435 INFO L225 Difference]: With dead ends: 11724 [2022-01-10 18:00:04,435 INFO L226 Difference]: Without dead ends: 7807 [2022-01-10 18:00:04,439 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 18:00:04,439 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 696 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:04,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2802 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:00:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2022-01-10 18:00:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 6055. [2022-01-10 18:00:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 6049 states have (on average 1.6096875516614317) internal successors, (9737), 6054 states have internal predecessors, (9737), 0 states have call successors, (0), 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 18:00:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 9737 transitions. [2022-01-10 18:00:05,102 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 9737 transitions. Word has length 78 [2022-01-10 18:00:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:05,102 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 9737 transitions. [2022-01-10 18:00:05,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 18:00:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 9737 transitions. [2022-01-10 18:00:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:00:05,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:00:05,106 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] [2022-01-10 18:00:05,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:00:05,106 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:00:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:00:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash 801614728, now seen corresponding path program 1 times [2022-01-10 18:00:05,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:00:05,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935998172] [2022-01-10 18:00:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:00:05,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:00:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:00:05,189 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 18:00:05,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:00:05,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935998172] [2022-01-10 18:00:05,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935998172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:00:05,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:00:05,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:00:05,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882124947] [2022-01-10 18:00:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:00:05,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:00:05,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:00:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:00:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:00:05,190 INFO L87 Difference]: Start difference. First operand 6055 states and 9737 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 18:00:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:00:05,971 INFO L93 Difference]: Finished difference Result 7634 states and 12262 transitions. [2022-01-10 18:00:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:00:05,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 18:00:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:00:05,972 INFO L225 Difference]: With dead ends: 7634 [2022-01-10 18:00:05,972 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 18:00:05,979 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 18:00:05,979 INFO L933 BasicCegarLoop]: 1876 mSDtfsCounter, 1402 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:00:05,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 3750 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:00:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 18:00:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 18:00:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:00:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 18:00:05,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2022-01-10 18:00:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:00:05,980 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 18:00:05,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 18:00:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 18:00:05,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 18:00:05,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-10 18:00:05,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-10 18:00:05,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-01-10 18:00:05,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-10 18:00:05,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-10 18:00:05,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-10 18:00:05,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:00:05,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 18:00:34,046 WARN L228 SmtUtils]: Spent 23.45s on a formula simplification. DAG size of input: 228 DAG size of output: 228 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:00:41,400 WARN L228 SmtUtils]: Spent 7.34s on a formula simplification that was a NOOP. DAG size: 234 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)