/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_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:53:19,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:53:19,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:53:19,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:53:19,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:53:19,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:53:19,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:53:19,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:53:19,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:53:19,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:53:19,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:53:19,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:53:19,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:53:19,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:53:19,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:53:19,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:53:19,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:53:19,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:53:19,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:53:19,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:53:19,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:53:19,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:53:19,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:53:19,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:53:19,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:53:19,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:53:19,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:53:19,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:53:19,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:53:19,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:53:19,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:53:19,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:53:19,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:53:19,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:53:19,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:53:19,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:53:19,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:53:19,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:53:19,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:53:19,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:53:19,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:53:19,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:53:19,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:53:19,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:53:19,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:53:19,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:53:19,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:53:19,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:53:19,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:53:19,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:53:19,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:53:19,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:53:19,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:53:19,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:53:19,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:53:19,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:53:19,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:53:19,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:53:19,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:53:19,749 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:53:19,750 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:53:19,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:53:19,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:53:19,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:53:19,962 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:53:19,964 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:53:19,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2022-01-11 05:53:20,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/671784ec9/729430bdd2b847489e88c197c0c023a7/FLAG6d9e52822 [2022-01-11 05:53:20,449 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:53:20,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2022-01-11 05:53:20,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/671784ec9/729430bdd2b847489e88c197c0c023a7/FLAG6d9e52822 [2022-01-11 05:53:20,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/671784ec9/729430bdd2b847489e88c197c0c023a7 [2022-01-11 05:53:20,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:53:20,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:53:20,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:53:20,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:53:20,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:53:20,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b0ed78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20, skipping insertion in model container [2022-01-11 05:53:20,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:53:20,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:53:20,731 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/minepump_spec3_product57.cil.c[13989,14002] [2022-01-11 05:53:20,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:53:20,770 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:53:20,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:53:20,816 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/minepump_spec3_product57.cil.c[13989,14002] [2022-01-11 05:53:20,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:53:20,828 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:53:20,858 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/minepump_spec3_product57.cil.c[13989,14002] [2022-01-11 05:53:20,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:53:20,879 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:53:20,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20 WrapperNode [2022-01-11 05:53:20,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:53:20,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:53:20,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:53:20,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:53:20,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,924 INFO L137 Inliner]: procedures = 58, calls = 157, calls flagged for inlining = 54, calls inlined = 98, statements flattened = 758 [2022-01-11 05:53:20,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:53:20,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:53:20,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:53:20,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:53:20,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:53:20,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:53:20,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:53:20,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:53:20,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (1/1) ... [2022-01-11 05:53:20,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:53:20,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:53:21,004 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) [2022-01-11 05:53:21,031 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 [2022-01-11 05:53:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:53:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:53:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:53:21,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:53:21,125 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:53:21,126 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:53:21,560 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:53:21,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:53:21,566 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 05:53:21,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:53:21 BoogieIcfgContainer [2022-01-11 05:53:21,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:53:21,568 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:53:21,568 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:53:21,572 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:53:21,574 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:53:21" (1/1) ... [2022-01-11 05:53:21,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:53:21 BasicIcfg [2022-01-11 05:53:21,687 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:53:21,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:53:21,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:53:21,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:53:21,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:53:20" (1/4) ... [2022-01-11 05:53:21,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f9e837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:53:21, skipping insertion in model container [2022-01-11 05:53:21,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:53:20" (2/4) ... [2022-01-11 05:53:21,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f9e837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:53:21, skipping insertion in model container [2022-01-11 05:53:21,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:53:21" (3/4) ... [2022-01-11 05:53:21,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f9e837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:53:21, skipping insertion in model container [2022-01-11 05:53:21,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:53:21" (4/4) ... [2022-01-11 05:53:21,692 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product57.cil.cTransformedIcfg [2022-01-11 05:53:21,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:53:21,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 05:53:21,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:53:21,731 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 [2022-01-11 05:53:21,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 05:53:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 191 states have (on average 1.382198952879581) internal successors, (264), 194 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 05:53:21,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:21,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:21,751 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1761387954, now seen corresponding path program 1 times [2022-01-11 05:53:21,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:21,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148137249] [2022-01-11 05:53:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:21,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:21,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:21,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148137249] [2022-01-11 05:53:21,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148137249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:21,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:21,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:53:21,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307522589] [2022-01-11 05:53:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:21,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:53:21,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:53:21,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:53:21,985 INFO L87 Difference]: Start difference. First operand has 195 states, 191 states have (on average 1.382198952879581) internal successors, (264), 194 states have internal predecessors, (264), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:22,027 INFO L93 Difference]: Finished difference Result 380 states and 517 transitions. [2022-01-11 05:53:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:53:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-11 05:53:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:22,035 INFO L225 Difference]: With dead ends: 380 [2022-01-11 05:53:22,036 INFO L226 Difference]: Without dead ends: 185 [2022-01-11 05:53:22,039 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 [2022-01-11 05:53:22,043 INFO L933 BasicCegarLoop]: 254 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, 254 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 [2022-01-11 05:53:22,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-01-11 05:53:22,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-01-11 05:53:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 182 states have (on average 1.3516483516483517) internal successors, (246), 184 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 246 transitions. [2022-01-11 05:53:22,079 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 246 transitions. Word has length 19 [2022-01-11 05:53:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:22,080 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 246 transitions. [2022-01-11 05:53:22,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 246 transitions. [2022-01-11 05:53:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 05:53:22,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:22,081 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] [2022-01-11 05:53:22,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:53:22,081 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:22,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2060528782, now seen corresponding path program 1 times [2022-01-11 05:53:22,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:22,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862253576] [2022-01-11 05:53:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:22,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:22,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:22,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862253576] [2022-01-11 05:53:22,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862253576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:22,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:22,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:53:22,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174070254] [2022-01-11 05:53:22,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:53:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:53:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:22,167 INFO L87 Difference]: Start difference. First operand 185 states and 246 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:22,195 INFO L93 Difference]: Finished difference Result 363 states and 485 transitions. [2022-01-11 05:53:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:53:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-11 05:53:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:22,197 INFO L225 Difference]: With dead ends: 363 [2022-01-11 05:53:22,197 INFO L226 Difference]: Without dead ends: 185 [2022-01-11 05:53:22,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:22,199 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 232 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:22,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 240 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-01-11 05:53:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-01-11 05:53:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 182 states have (on average 1.335164835164835) internal successors, (243), 184 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 243 transitions. [2022-01-11 05:53:22,215 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 243 transitions. Word has length 20 [2022-01-11 05:53:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:22,215 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 243 transitions. [2022-01-11 05:53:22,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 243 transitions. [2022-01-11 05:53:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 05:53:22,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:22,216 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] [2022-01-11 05:53:22,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:53:22,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:22,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash -396997334, now seen corresponding path program 1 times [2022-01-11 05:53:22,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:22,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812232322] [2022-01-11 05:53:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:22,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:22,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:22,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812232322] [2022-01-11 05:53:22,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812232322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:22,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:22,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:53:22,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383153910] [2022-01-11 05:53:22,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:22,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:53:22,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:53:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:22,308 INFO L87 Difference]: Start difference. First operand 185 states and 243 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:22,394 INFO L93 Difference]: Finished difference Result 436 states and 571 transitions. [2022-01-11 05:53:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:53:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-01-11 05:53:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:22,396 INFO L225 Difference]: With dead ends: 436 [2022-01-11 05:53:22,396 INFO L226 Difference]: Without dead ends: 258 [2022-01-11 05:53:22,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:22,397 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 167 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:22,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 344 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-11 05:53:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2022-01-11 05:53:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 1.2971887550200802) internal successors, (323), 251 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 323 transitions. [2022-01-11 05:53:22,419 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 323 transitions. Word has length 25 [2022-01-11 05:53:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:22,419 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 323 transitions. [2022-01-11 05:53:22,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 323 transitions. [2022-01-11 05:53:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-11 05:53:22,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:22,420 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] [2022-01-11 05:53:22,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:53:22,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1523905736, now seen corresponding path program 1 times [2022-01-11 05:53:22,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:22,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077866804] [2022-01-11 05:53:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:22,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:22,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077866804] [2022-01-11 05:53:22,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077866804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:22,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:22,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:22,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563483445] [2022-01-11 05:53:22,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:22,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:22,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:22,500 INFO L87 Difference]: Start difference. First operand 252 states and 323 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:22,757 INFO L93 Difference]: Finished difference Result 1420 states and 1832 transitions. [2022-01-11 05:53:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:53:22,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-01-11 05:53:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:22,761 INFO L225 Difference]: With dead ends: 1420 [2022-01-11 05:53:22,761 INFO L226 Difference]: Without dead ends: 791 [2022-01-11 05:53:22,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:53:22,763 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 1104 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:22,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 1397 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:53:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-01-11 05:53:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 341. [2022-01-11 05:53:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 338 states have (on average 1.2899408284023668) internal successors, (436), 340 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-01-11 05:53:22,784 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 31 [2022-01-11 05:53:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:22,784 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-01-11 05:53:22,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-01-11 05:53:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 05:53:22,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:22,785 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] [2022-01-11 05:53:22,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:53:22,785 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:22,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1948684826, now seen corresponding path program 1 times [2022-01-11 05:53:22,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:22,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194577834] [2022-01-11 05:53:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:22,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:22,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:22,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194577834] [2022-01-11 05:53:22,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194577834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:22,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:22,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:53:22,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928294443] [2022-01-11 05:53:22,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:22,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:53:22,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:53:22,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:53:22,926 INFO L87 Difference]: Start difference. First operand 341 states and 436 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:23,081 INFO L93 Difference]: Finished difference Result 947 states and 1210 transitions. [2022-01-11 05:53:23,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:53:23,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 05:53:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:23,084 INFO L225 Difference]: With dead ends: 947 [2022-01-11 05:53:23,084 INFO L226 Difference]: Without dead ends: 613 [2022-01-11 05:53:23,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:53:23,088 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 208 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:23,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1685 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-01-11 05:53:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 607. [2022-01-11 05:53:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 604 states have (on average 1.2731788079470199) internal successors, (769), 606 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 769 transitions. [2022-01-11 05:53:23,130 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 769 transitions. Word has length 39 [2022-01-11 05:53:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:23,134 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 769 transitions. [2022-01-11 05:53:23,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 769 transitions. [2022-01-11 05:53:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 05:53:23,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:23,139 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] [2022-01-11 05:53:23,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:53:23,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash -595375129, now seen corresponding path program 1 times [2022-01-11 05:53:23,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:23,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8907920] [2022-01-11 05:53:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:23,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:23,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:23,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8907920] [2022-01-11 05:53:23,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8907920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:23,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:23,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:23,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795599457] [2022-01-11 05:53:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:23,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:23,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:23,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:23,220 INFO L87 Difference]: Start difference. First operand 607 states and 769 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:23,421 INFO L93 Difference]: Finished difference Result 1297 states and 1626 transitions. [2022-01-11 05:53:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:53:23,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 05:53:23,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:23,424 INFO L225 Difference]: With dead ends: 1297 [2022-01-11 05:53:23,424 INFO L226 Difference]: Without dead ends: 849 [2022-01-11 05:53:23,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:23,429 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 499 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:23,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1009 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-11 05:53:23,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 607. [2022-01-11 05:53:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 604 states have (on average 1.2632450331125828) internal successors, (763), 606 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 763 transitions. [2022-01-11 05:53:23,470 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 763 transitions. Word has length 39 [2022-01-11 05:53:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:23,472 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 763 transitions. [2022-01-11 05:53:23,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 763 transitions. [2022-01-11 05:53:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 05:53:23,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:23,474 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] [2022-01-11 05:53:23,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:53:23,474 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash 912176680, now seen corresponding path program 1 times [2022-01-11 05:53:23,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:23,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133505498] [2022-01-11 05:53:23,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:23,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:23,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133505498] [2022-01-11 05:53:23,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133505498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:23,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:23,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:23,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334689129] [2022-01-11 05:53:23,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:23,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:23,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:23,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:23,525 INFO L87 Difference]: Start difference. First operand 607 states and 763 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:23,683 INFO L93 Difference]: Finished difference Result 2077 states and 2640 transitions. [2022-01-11 05:53:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:53:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 05:53:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:23,688 INFO L225 Difference]: With dead ends: 2077 [2022-01-11 05:53:23,688 INFO L226 Difference]: Without dead ends: 1477 [2022-01-11 05:53:23,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:53:23,692 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 758 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:23,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1241 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2022-01-11 05:53:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 628. [2022-01-11 05:53:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 625 states have (on average 1.2448) internal successors, (778), 627 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 778 transitions. [2022-01-11 05:53:23,749 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 778 transitions. Word has length 39 [2022-01-11 05:53:23,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:23,749 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 778 transitions. [2022-01-11 05:53:23,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 778 transitions. [2022-01-11 05:53:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 05:53:23,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:23,750 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] [2022-01-11 05:53:23,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:53:23,751 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1836854219, now seen corresponding path program 1 times [2022-01-11 05:53:23,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:23,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140879414] [2022-01-11 05:53:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:23,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:23,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:23,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140879414] [2022-01-11 05:53:23,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140879414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:23,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:23,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:23,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923766411] [2022-01-11 05:53:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:23,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:53:23,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:53:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:23,820 INFO L87 Difference]: Start difference. First operand 628 states and 778 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:24,228 INFO L93 Difference]: Finished difference Result 3812 states and 4740 transitions. [2022-01-11 05:53:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 05:53:24,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-11 05:53:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:24,236 INFO L225 Difference]: With dead ends: 3812 [2022-01-11 05:53:24,236 INFO L226 Difference]: Without dead ends: 3191 [2022-01-11 05:53:24,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:53:24,238 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1749 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:24,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1749 Valid, 2087 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-01-11 05:53:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 1180. [2022-01-11 05:53:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1177 states have (on average 1.2310960067969414) internal successors, (1449), 1179 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1449 transitions. [2022-01-11 05:53:24,349 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1449 transitions. Word has length 42 [2022-01-11 05:53:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:24,349 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1449 transitions. [2022-01-11 05:53:24,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1449 transitions. [2022-01-11 05:53:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-11 05:53:24,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:24,350 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] [2022-01-11 05:53:24,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:53:24,350 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:24,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1359004048, now seen corresponding path program 1 times [2022-01-11 05:53:24,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:24,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600506573] [2022-01-11 05:53:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:24,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:24,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:24,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600506573] [2022-01-11 05:53:24,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600506573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:24,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:24,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:24,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404636564] [2022-01-11 05:53:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:24,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:24,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:24,392 INFO L87 Difference]: Start difference. First operand 1180 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:24,696 INFO L93 Difference]: Finished difference Result 3335 states and 4110 transitions. [2022-01-11 05:53:24,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:53:24,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-11 05:53:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:24,703 INFO L225 Difference]: With dead ends: 3335 [2022-01-11 05:53:24,703 INFO L226 Difference]: Without dead ends: 2162 [2022-01-11 05:53:24,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:53:24,707 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 530 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:24,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1584 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2022-01-11 05:53:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 968. [2022-01-11 05:53:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 965 states have (on average 1.206217616580311) internal successors, (1164), 967 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1164 transitions. [2022-01-11 05:53:24,795 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1164 transitions. Word has length 43 [2022-01-11 05:53:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:24,795 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1164 transitions. [2022-01-11 05:53:24,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:24,795 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1164 transitions. [2022-01-11 05:53:24,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 05:53:24,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:24,796 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] [2022-01-11 05:53:24,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:53:24,796 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:24,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1145159707, now seen corresponding path program 1 times [2022-01-11 05:53:24,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428009687] [2022-01-11 05:53:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:24,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:24,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:24,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428009687] [2022-01-11 05:53:24,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428009687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:24,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:24,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:24,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055763218] [2022-01-11 05:53:24,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:24,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:24,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:24,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:24,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:24,842 INFO L87 Difference]: Start difference. First operand 968 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:25,056 INFO L93 Difference]: Finished difference Result 2685 states and 3211 transitions. [2022-01-11 05:53:25,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:53:25,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 05:53:25,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:25,062 INFO L225 Difference]: With dead ends: 2685 [2022-01-11 05:53:25,062 INFO L226 Difference]: Without dead ends: 1544 [2022-01-11 05:53:25,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:53:25,064 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 506 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:25,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1098 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2022-01-11 05:53:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 732. [2022-01-11 05:53:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 729 states have (on average 1.187928669410151) internal successors, (866), 731 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 866 transitions. [2022-01-11 05:53:25,126 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 866 transitions. Word has length 44 [2022-01-11 05:53:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:25,126 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 866 transitions. [2022-01-11 05:53:25,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 866 transitions. [2022-01-11 05:53:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:53:25,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:25,127 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:25,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:53:25,127 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1091815101, now seen corresponding path program 1 times [2022-01-11 05:53:25,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:25,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273450217] [2022-01-11 05:53:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:25,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:25,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:25,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273450217] [2022-01-11 05:53:25,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273450217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:25,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:25,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:53:25,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208971396] [2022-01-11 05:53:25,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:25,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:53:25,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:53:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:53:25,193 INFO L87 Difference]: Start difference. First operand 732 states and 866 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2022-01-11 05:53:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:25,262 INFO L93 Difference]: Finished difference Result 732 states and 866 transitions. [2022-01-11 05:53:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:53:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 [2022-01-11 05:53:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:25,264 INFO L225 Difference]: With dead ends: 732 [2022-01-11 05:53:25,264 INFO L226 Difference]: Without dead ends: 557 [2022-01-11 05:53:25,265 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 [2022-01-11 05:53:25,265 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:25,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 83 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-01-11 05:53:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-01-11 05:53:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.1942446043165467) internal successors, (664), 556 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 664 transitions. [2022-01-11 05:53:25,316 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 664 transitions. Word has length 63 [2022-01-11 05:53:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:25,316 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 664 transitions. [2022-01-11 05:53:25,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2022-01-11 05:53:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 664 transitions. [2022-01-11 05:53:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:53:25,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:25,317 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:25,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:53:25,318 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash -538012984, now seen corresponding path program 1 times [2022-01-11 05:53:25,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:25,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408711443] [2022-01-11 05:53:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:25,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:25,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:25,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408711443] [2022-01-11 05:53:25,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408711443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:25,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:25,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:25,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863152525] [2022-01-11 05:53:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:25,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:25,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:25,369 INFO L87 Difference]: Start difference. First operand 557 states and 664 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:25,488 INFO L93 Difference]: Finished difference Result 1459 states and 1738 transitions. [2022-01-11 05:53:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:53:25,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:53:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:25,491 INFO L225 Difference]: With dead ends: 1459 [2022-01-11 05:53:25,491 INFO L226 Difference]: Without dead ends: 909 [2022-01-11 05:53:25,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:53:25,492 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 266 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:25,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 407 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-01-11 05:53:25,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 557. [2022-01-11 05:53:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.1816546762589928) internal successors, (657), 556 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 657 transitions. [2022-01-11 05:53:25,572 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 657 transitions. Word has length 69 [2022-01-11 05:53:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:25,572 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 657 transitions. [2022-01-11 05:53:25,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 657 transitions. [2022-01-11 05:53:25,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 05:53:25,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:25,574 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:25,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:53:25,574 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:25,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2099085415, now seen corresponding path program 1 times [2022-01-11 05:53:25,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:25,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636041713] [2022-01-11 05:53:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:25,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:25,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:25,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636041713] [2022-01-11 05:53:25,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636041713] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:53:25,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763810907] [2022-01-11 05:53:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:25,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:53:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:53:25,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:53:25,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:53:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:25,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-11 05:53:25,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:53:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 05:53:25,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 05:53:25,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763810907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:25,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 05:53:25,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-01-11 05:53:25,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526187855] [2022-01-11 05:53:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:25,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:25,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:25,937 INFO L87 Difference]: Start difference. First operand 557 states and 657 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:26,074 INFO L93 Difference]: Finished difference Result 1252 states and 1493 transitions. [2022-01-11 05:53:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:53:26,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 05:53:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:26,077 INFO L225 Difference]: With dead ends: 1252 [2022-01-11 05:53:26,078 INFO L226 Difference]: Without dead ends: 829 [2022-01-11 05:53:26,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:53:26,079 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 164 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:26,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 404 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-01-11 05:53:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2022-01-11 05:53:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.1778169014084507) internal successors, (669), 568 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 669 transitions. [2022-01-11 05:53:26,146 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 669 transitions. Word has length 71 [2022-01-11 05:53:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:26,146 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 669 transitions. [2022-01-11 05:53:26,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:26,146 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 669 transitions. [2022-01-11 05:53:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 05:53:26,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:26,147 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:26,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 05:53:26,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-11 05:53:26,366 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1690323256, now seen corresponding path program 1 times [2022-01-11 05:53:26,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:26,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345117694] [2022-01-11 05:53:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:26,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:26,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:26,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345117694] [2022-01-11 05:53:26,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345117694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:26,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:26,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:26,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770352416] [2022-01-11 05:53:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:26,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:53:26,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:53:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:26,473 INFO L87 Difference]: Start difference. First operand 569 states and 669 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 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) [2022-01-11 05:53:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:26,827 INFO L93 Difference]: Finished difference Result 2105 states and 2509 transitions. [2022-01-11 05:53:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 05:53:26,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 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 [2022-01-11 05:53:26,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:26,832 INFO L225 Difference]: With dead ends: 2105 [2022-01-11 05:53:26,832 INFO L226 Difference]: Without dead ends: 1827 [2022-01-11 05:53:26,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-11 05:53:26,833 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 436 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:26,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1051 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:53:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2022-01-11 05:53:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 817. [2022-01-11 05:53:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.170343137254902) internal successors, (955), 816 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 955 transitions. [2022-01-11 05:53:26,949 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 955 transitions. Word has length 71 [2022-01-11 05:53:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:26,949 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 955 transitions. [2022-01-11 05:53:26,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 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) [2022-01-11 05:53:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 955 transitions. [2022-01-11 05:53:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 05:53:26,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:26,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:26,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:53:26,950 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2045869290, now seen corresponding path program 1 times [2022-01-11 05:53:26,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:26,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855308890] [2022-01-11 05:53:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:26,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 05:53:26,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:26,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855308890] [2022-01-11 05:53:26,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855308890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:26,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:26,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:53:26,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356018076] [2022-01-11 05:53:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:26,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:53:26,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:53:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:26,996 INFO L87 Difference]: Start difference. First operand 817 states and 955 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2022-01-11 05:53:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:27,141 INFO L93 Difference]: Finished difference Result 1873 states and 2198 transitions. [2022-01-11 05:53:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:53:27,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 71 [2022-01-11 05:53:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:27,144 INFO L225 Difference]: With dead ends: 1873 [2022-01-11 05:53:27,144 INFO L226 Difference]: Without dead ends: 1063 [2022-01-11 05:53:27,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:53:27,146 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 175 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:27,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 385 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-01-11 05:53:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 817. [2022-01-11 05:53:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.1605392156862746) internal successors, (947), 816 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 947 transitions. [2022-01-11 05:53:27,238 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 947 transitions. Word has length 71 [2022-01-11 05:53:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:27,239 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 947 transitions. [2022-01-11 05:53:27,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2022-01-11 05:53:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 947 transitions. [2022-01-11 05:53:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 05:53:27,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:27,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:27,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:53:27,240 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2038109931, now seen corresponding path program 1 times [2022-01-11 05:53:27,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:27,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189871735] [2022-01-11 05:53:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:27,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 05:53:27,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:27,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189871735] [2022-01-11 05:53:27,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189871735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:27,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:27,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:53:27,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247641230] [2022-01-11 05:53:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:27,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:53:27,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:53:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:53:27,271 INFO L87 Difference]: Start difference. First operand 817 states and 947 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2022-01-11 05:53:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:27,384 INFO L93 Difference]: Finished difference Result 1551 states and 1814 transitions. [2022-01-11 05:53:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:53:27,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 71 [2022-01-11 05:53:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:27,386 INFO L225 Difference]: With dead ends: 1551 [2022-01-11 05:53:27,386 INFO L226 Difference]: Without dead ends: 741 [2022-01-11 05:53:27,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:27,387 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 87 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:27,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 247 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-01-11 05:53:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 561. [2022-01-11 05:53:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 1.1589285714285715) internal successors, (649), 560 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 649 transitions. [2022-01-11 05:53:27,453 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 649 transitions. Word has length 71 [2022-01-11 05:53:27,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:27,453 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 649 transitions. [2022-01-11 05:53:27,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2022-01-11 05:53:27,453 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 649 transitions. [2022-01-11 05:53:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 05:53:27,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:27,453 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:27,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:53:27,454 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:27,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1815008102, now seen corresponding path program 1 times [2022-01-11 05:53:27,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:27,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401991821] [2022-01-11 05:53:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:27,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 05:53:27,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:27,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401991821] [2022-01-11 05:53:27,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401991821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:27,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:27,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:53:27,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433032019] [2022-01-11 05:53:27,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:27,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:53:27,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:53:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:53:27,495 INFO L87 Difference]: Start difference. First operand 561 states and 649 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:27,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:27,651 INFO L93 Difference]: Finished difference Result 1359 states and 1579 transitions. [2022-01-11 05:53:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:53:27,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 05:53:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:27,653 INFO L225 Difference]: With dead ends: 1359 [2022-01-11 05:53:27,654 INFO L226 Difference]: Without dead ends: 867 [2022-01-11 05:53:27,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:53:27,655 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 244 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:27,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 733 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:27,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-01-11 05:53:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 533. [2022-01-11 05:53:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.1597744360902256) internal successors, (617), 532 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 617 transitions. [2022-01-11 05:53:27,735 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 617 transitions. Word has length 73 [2022-01-11 05:53:27,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:27,736 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 617 transitions. [2022-01-11 05:53:27,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 617 transitions. [2022-01-11 05:53:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 05:53:27,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:27,736 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:27,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:53:27,737 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:27,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 820796043, now seen corresponding path program 1 times [2022-01-11 05:53:27,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:27,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989879357] [2022-01-11 05:53:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:27,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:27,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:27,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989879357] [2022-01-11 05:53:27,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989879357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:53:27,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489702855] [2022-01-11 05:53:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:27,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:53:27,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:53:27,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:53:27,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:53:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:27,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 05:53:27,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:53:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:28,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:53:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:53:28,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489702855] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 05:53:28,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 05:53:28,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-01-11 05:53:28,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102034045] [2022-01-11 05:53:28,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:28,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:53:28,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:28,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:53:28,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-11 05:53:28,243 INFO L87 Difference]: Start difference. First operand 533 states and 617 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:28,910 INFO L93 Difference]: Finished difference Result 3451 states and 4048 transitions. [2022-01-11 05:53:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-11 05:53:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 05:53:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:28,918 INFO L225 Difference]: With dead ends: 3451 [2022-01-11 05:53:28,918 INFO L226 Difference]: Without dead ends: 2987 [2022-01-11 05:53:28,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2022-01-11 05:53:28,919 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 899 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:28,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 1013 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:53:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2022-01-11 05:53:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 931. [2022-01-11 05:53:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 930 states have (on average 1.1688172043010752) internal successors, (1087), 930 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1087 transitions. [2022-01-11 05:53:29,050 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1087 transitions. Word has length 73 [2022-01-11 05:53:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:29,050 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1087 transitions. [2022-01-11 05:53:29,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1087 transitions. [2022-01-11 05:53:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 05:53:29,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:29,051 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:29,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 05:53:29,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-11 05:53:29,269 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -665254396, now seen corresponding path program 1 times [2022-01-11 05:53:29,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:29,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727153125] [2022-01-11 05:53:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:29,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 05:53:29,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:29,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727153125] [2022-01-11 05:53:29,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727153125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:29,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:29,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:53:29,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115916294] [2022-01-11 05:53:29,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:29,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:53:29,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:53:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:53:29,371 INFO L87 Difference]: Start difference. First operand 931 states and 1087 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:30,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:30,700 INFO L93 Difference]: Finished difference Result 5702 states and 6689 transitions. [2022-01-11 05:53:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-11 05:53:30,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-11 05:53:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:30,712 INFO L225 Difference]: With dead ends: 5702 [2022-01-11 05:53:30,712 INFO L226 Difference]: Without dead ends: 4778 [2022-01-11 05:53:30,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2022-01-11 05:53:30,714 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 757 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:30,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 1834 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:53:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2022-01-11 05:53:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 1131. [2022-01-11 05:53:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 1.1725663716814159) internal successors, (1325), 1130 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1325 transitions. [2022-01-11 05:53:30,955 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1325 transitions. Word has length 103 [2022-01-11 05:53:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:30,955 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 1325 transitions. [2022-01-11 05:53:30,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1325 transitions. [2022-01-11 05:53:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 05:53:30,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:53:30,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:53:30,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:53:30,957 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:53:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:53:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1689948317, now seen corresponding path program 1 times [2022-01-11 05:53:30,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:53:30,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671896381] [2022-01-11 05:53:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:53:30,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:53:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:53:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-11 05:53:31,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:53:31,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671896381] [2022-01-11 05:53:31,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671896381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:53:31,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:53:31,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:53:31,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877484617] [2022-01-11 05:53:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:53:31,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:53:31,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:53:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:53:31,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:53:31,017 INFO L87 Difference]: Start difference. First operand 1131 states and 1325 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:53:31,101 INFO L93 Difference]: Finished difference Result 1533 states and 1785 transitions. [2022-01-11 05:53:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:53:31,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-11 05:53:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:53:31,102 INFO L225 Difference]: With dead ends: 1533 [2022-01-11 05:53:31,102 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 05:53:31,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:53:31,104 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 210 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:53:31,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 374 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:53:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 05:53:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 05:53:31,107 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) [2022-01-11 05:53:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 05:53:31,107 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2022-01-11 05:53:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:53:31,108 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 05:53:31,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:53:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 05:53:31,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 05:53:31,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 05:53:31,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 05:53:31,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 05:53:31,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:53:31,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.