/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:12:14,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:12:14,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:12:14,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:12:14,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:12:14,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:12:14,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:12:14,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:12:14,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:12:14,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:12:14,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:12:14,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:12:14,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:12:14,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:12:14,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:12:14,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:12:14,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:12:14,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:12:14,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:12:14,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:12:14,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:12:14,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:12:14,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:12:14,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:12:14,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:12:14,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:12:14,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:12:14,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:12:14,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:12:14,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:12:14,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:12:14,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:12:14,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:12:14,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:12:14,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:12:14,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:12:14,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:12:14,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:12:14,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:12:14,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:12:14,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:12:14,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:12:14,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:12:14,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:12:14,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:12:14,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:12:14,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:12:14,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:12:14,558 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:12:14,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:12:14,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:12:14,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:12:14,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:12:14,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:12:14,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:12:14,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:12:14,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:12:14,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:12:14,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:12:14,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:12:14,566 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:12:14,566 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:12:14,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:12:14,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:12:14,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:12:14,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:12:14,837 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:12:14,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2022-01-10 12:12:14,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07190a506/99892d257fed46158a9b7c38364a1cc5/FLAGb3894ed2b [2022-01-10 12:12:15,465 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:12:15,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2022-01-10 12:12:15,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07190a506/99892d257fed46158a9b7c38364a1cc5/FLAGb3894ed2b [2022-01-10 12:12:15,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07190a506/99892d257fed46158a9b7c38364a1cc5 [2022-01-10 12:12:15,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:12:15,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:12:15,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:12:15,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:12:15,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:12:15,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:12:15" (1/1) ... [2022-01-10 12:12:15,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431f0e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:15, skipping insertion in model container [2022-01-10 12:12:15,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:12:15" (1/1) ... [2022-01-10 12:12:15,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:12:15,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:12:16,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-01-10 12:12:16,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:12:16,449 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:12:16,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:12:16,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-01-10 12:12:16,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:12:16,645 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:12:16,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-01-10 12:12:16,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:12:16,787 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:12:16,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16 WrapperNode [2022-01-10 12:12:16,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:12:16,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:12:16,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:12:16,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:12:16,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:16,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:16,917 INFO L137 Inliner]: procedures = 127, calls = 196, calls flagged for inlining = 110, calls inlined = 127, statements flattened = 1871 [2022-01-10 12:12:16,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:12:16,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:12:16,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:12:16,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:12:16,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:16,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:16,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:16,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:16,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:16,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:17,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:17,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:12:17,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:12:17,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:12:17,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:12:17,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (1/1) ... [2022-01-10 12:12:17,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:12:17,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:12:17,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:12:17,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:12:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:12:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:12:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:12:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:12:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:12:17,400 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:12:17,402 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:12:18,591 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:12:18,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:12:18,602 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:12:18,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:12:18 BoogieIcfgContainer [2022-01-10 12:12:18,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:12:18,607 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:12:18,607 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:12:18,609 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:12:18,612 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:12:18" (1/1) ... [2022-01-10 12:12:19,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:12:19 BasicIcfg [2022-01-10 12:12:19,042 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:12:19,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:12:19,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:12:19,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:12:19,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:12:15" (1/4) ... [2022-01-10 12:12:19,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572d3c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:12:19, skipping insertion in model container [2022-01-10 12:12:19,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:16" (2/4) ... [2022-01-10 12:12:19,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572d3c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:12:19, skipping insertion in model container [2022-01-10 12:12:19,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:12:18" (3/4) ... [2022-01-10 12:12:19,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572d3c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:12:19, skipping insertion in model container [2022-01-10 12:12:19,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:12:19" (4/4) ... [2022-01-10 12:12:19,051 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.cTransformedIcfg [2022-01-10 12:12:19,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:12:19,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:12:19,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:12:19,124 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:12:19,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:12:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 450 states, 447 states have (on average 1.6979865771812082) internal successors, (759), 449 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 12:12:19,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:19,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:19,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1134174746, now seen corresponding path program 1 times [2022-01-10 12:12:19,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:19,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586789950] [2022-01-10 12:12:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:19,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:19,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:19,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586789950] [2022-01-10 12:12:19,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586789950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:19,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:19,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:12:19,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081144762] [2022-01-10 12:12:19,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:19,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:12:19,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:19,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:12:19,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:12:19,699 INFO L87 Difference]: Start difference. First operand has 450 states, 447 states have (on average 1.6979865771812082) internal successors, (759), 449 states have internal predecessors, (759), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:19,756 INFO L93 Difference]: Finished difference Result 639 states and 1058 transitions. [2022-01-10 12:12:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:12:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-10 12:12:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:19,781 INFO L225 Difference]: With dead ends: 639 [2022-01-10 12:12:19,781 INFO L226 Difference]: Without dead ends: 392 [2022-01-10 12:12:19,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:12:19,791 INFO L933 BasicCegarLoop]: 753 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, 753 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:19,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-10 12:12:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-01-10 12:12:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 390 states have (on average 1.7076923076923076) internal successors, (666), 391 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 666 transitions. [2022-01-10 12:12:19,877 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 666 transitions. Word has length 48 [2022-01-10 12:12:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:19,878 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 666 transitions. [2022-01-10 12:12:19,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 666 transitions. [2022-01-10 12:12:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 12:12:19,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:19,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:19,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:12:19,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1131035954, now seen corresponding path program 1 times [2022-01-10 12:12:19,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:19,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951545256] [2022-01-10 12:12:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:19,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:20,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:20,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951545256] [2022-01-10 12:12:20,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951545256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:20,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:20,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:12:20,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782260054] [2022-01-10 12:12:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:20,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:12:20,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:12:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:20,118 INFO L87 Difference]: Start difference. First operand 392 states and 666 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:20,167 INFO L93 Difference]: Finished difference Result 479 states and 801 transitions. [2022-01-10 12:12:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:12:20,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 12:12:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:20,171 INFO L225 Difference]: With dead ends: 479 [2022-01-10 12:12:20,171 INFO L226 Difference]: Without dead ends: 386 [2022-01-10 12:12:20,174 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 [2022-01-10 12:12:20,175 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 477 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:20,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 789 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:20,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-10 12:12:20,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-01-10 12:12:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.7064935064935065) internal successors, (657), 385 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) [2022-01-10 12:12:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 657 transitions. [2022-01-10 12:12:20,203 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 657 transitions. Word has length 49 [2022-01-10 12:12:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:20,205 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 657 transitions. [2022-01-10 12:12:20,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 657 transitions. [2022-01-10 12:12:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:12:20,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:20,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:20,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:12:20,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:20,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash -8379157, now seen corresponding path program 1 times [2022-01-10 12:12:20,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:20,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523750631] [2022-01-10 12:12:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:20,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:20,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:20,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523750631] [2022-01-10 12:12:20,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523750631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:20,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:20,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:12:20,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809407595] [2022-01-10 12:12:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:20,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:12:20,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:12:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:20,466 INFO L87 Difference]: Start difference. First operand 386 states and 657 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:20,550 INFO L93 Difference]: Finished difference Result 753 states and 1286 transitions. [2022-01-10 12:12:20,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:12:20,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 12:12:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:20,554 INFO L225 Difference]: With dead ends: 753 [2022-01-10 12:12:20,554 INFO L226 Difference]: Without dead ends: 386 [2022-01-10 12:12:20,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:20,562 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 632 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:20,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 651 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-10 12:12:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-01-10 12:12:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.7012987012987013) internal successors, (655), 385 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 655 transitions. [2022-01-10 12:12:20,584 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 655 transitions. Word has length 85 [2022-01-10 12:12:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:20,585 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 655 transitions. [2022-01-10 12:12:20,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 655 transitions. [2022-01-10 12:12:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 12:12:20,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:20,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:20,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:12:20,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash 805010731, now seen corresponding path program 1 times [2022-01-10 12:12:20,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:20,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838039747] [2022-01-10 12:12:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:20,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:20,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:20,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838039747] [2022-01-10 12:12:20,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838039747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:20,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:20,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:12:20,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996653545] [2022-01-10 12:12:20,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:20,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:20,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:20,783 INFO L87 Difference]: Start difference. First operand 386 states and 655 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:21,011 INFO L93 Difference]: Finished difference Result 1798 states and 3071 transitions. [2022-01-10 12:12:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:12:21,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 12:12:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:21,020 INFO L225 Difference]: With dead ends: 1798 [2022-01-10 12:12:21,020 INFO L226 Difference]: Without dead ends: 1436 [2022-01-10 12:12:21,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:12:21,029 INFO L933 BasicCegarLoop]: 1233 mSDtfsCounter, 3058 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:21,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3058 Valid, 3070 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-01-10 12:12:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 386. [2022-01-10 12:12:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.6987012987012986) internal successors, (654), 385 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 654 transitions. [2022-01-10 12:12:21,065 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 654 transitions. Word has length 87 [2022-01-10 12:12:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:21,065 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 654 transitions. [2022-01-10 12:12:21,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 654 transitions. [2022-01-10 12:12:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 12:12:21,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:21,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:12:21,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash -184275479, now seen corresponding path program 1 times [2022-01-10 12:12:21,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:21,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048910051] [2022-01-10 12:12:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:21,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:21,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:21,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048910051] [2022-01-10 12:12:21,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048910051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:21,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:21,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:12:21,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438621618] [2022-01-10 12:12:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:21,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:12:21,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:12:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:21,241 INFO L87 Difference]: Start difference. First operand 386 states and 654 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:21,287 INFO L93 Difference]: Finished difference Result 757 states and 1286 transitions. [2022-01-10 12:12:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:12:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 12:12:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:21,290 INFO L225 Difference]: With dead ends: 757 [2022-01-10 12:12:21,290 INFO L226 Difference]: Without dead ends: 400 [2022-01-10 12:12:21,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:21,292 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 633 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:21,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 690 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-10 12:12:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 386. [2022-01-10 12:12:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.6961038961038961) internal successors, (653), 385 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 653 transitions. [2022-01-10 12:12:21,328 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 653 transitions. Word has length 88 [2022-01-10 12:12:21,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:21,333 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 653 transitions. [2022-01-10 12:12:21,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 653 transitions. [2022-01-10 12:12:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 12:12:21,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:21,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:21,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:12:21,338 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:21,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1141961996, now seen corresponding path program 1 times [2022-01-10 12:12:21,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:21,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352205603] [2022-01-10 12:12:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:21,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:21,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:21,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352205603] [2022-01-10 12:12:21,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352205603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:21,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:21,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:12:21,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357184733] [2022-01-10 12:12:21,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:21,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:21,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:21,501 INFO L87 Difference]: Start difference. First operand 386 states and 653 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) [2022-01-10 12:12:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:21,663 INFO L93 Difference]: Finished difference Result 1092 states and 1859 transitions. [2022-01-10 12:12:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:12:21,664 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 89 [2022-01-10 12:12:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:21,668 INFO L225 Difference]: With dead ends: 1092 [2022-01-10 12:12:21,668 INFO L226 Difference]: Without dead ends: 740 [2022-01-10 12:12:21,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:21,671 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 2981 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2981 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:21,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2981 Valid, 1338 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:21,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-01-10 12:12:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 386. [2022-01-10 12:12:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.690909090909091) internal successors, (651), 385 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 651 transitions. [2022-01-10 12:12:21,705 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 651 transitions. Word has length 89 [2022-01-10 12:12:21,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:21,706 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 651 transitions. [2022-01-10 12:12:21,706 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) [2022-01-10 12:12:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 651 transitions. [2022-01-10 12:12:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 12:12:21,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:21,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:21,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:12:21,708 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1205158999, now seen corresponding path program 1 times [2022-01-10 12:12:21,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:21,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280695431] [2022-01-10 12:12:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:21,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:21,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:21,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280695431] [2022-01-10 12:12:21,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280695431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:21,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:21,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:12:21,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518739527] [2022-01-10 12:12:21,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:21,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:12:21,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:12:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:12:21,888 INFO L87 Difference]: Start difference. First operand 386 states and 651 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:22,219 INFO L93 Difference]: Finished difference Result 1643 states and 2771 transitions. [2022-01-10 12:12:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:12:22,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-10 12:12:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:22,227 INFO L225 Difference]: With dead ends: 1643 [2022-01-10 12:12:22,227 INFO L226 Difference]: Without dead ends: 1582 [2022-01-10 12:12:22,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:12:22,230 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 2952 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:22,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2952 Valid, 3887 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-01-10 12:12:22,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 678. [2022-01-10 12:12:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.7090103397341212) internal successors, (1157), 677 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1157 transitions. [2022-01-10 12:12:22,299 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1157 transitions. Word has length 91 [2022-01-10 12:12:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:22,299 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1157 transitions. [2022-01-10 12:12:22,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1157 transitions. [2022-01-10 12:12:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:12:22,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:22,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:22,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:12:22,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1616162685, now seen corresponding path program 1 times [2022-01-10 12:12:22,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:22,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142857373] [2022-01-10 12:12:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:22,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:22,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:22,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142857373] [2022-01-10 12:12:22,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142857373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:22,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:22,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:12:22,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713307127] [2022-01-10 12:12:22,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:22,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:12:22,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:12:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:12:22,492 INFO L87 Difference]: Start difference. First operand 678 states and 1157 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:22,846 INFO L93 Difference]: Finished difference Result 2711 states and 4657 transitions. [2022-01-10 12:12:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:12:22,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-10 12:12:22,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:22,859 INFO L225 Difference]: With dead ends: 2711 [2022-01-10 12:12:22,859 INFO L226 Difference]: Without dead ends: 2650 [2022-01-10 12:12:22,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:12:22,861 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 2823 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2823 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:22,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2823 Valid, 3390 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2022-01-10 12:12:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 1239. [2022-01-10 12:12:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.7277867528271404) internal successors, (2139), 1238 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2139 transitions. [2022-01-10 12:12:22,978 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2139 transitions. Word has length 92 [2022-01-10 12:12:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:22,994 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 2139 transitions. [2022-01-10 12:12:22,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2139 transitions. [2022-01-10 12:12:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:12:22,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:22,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:22,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:12:22,998 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1784585309, now seen corresponding path program 1 times [2022-01-10 12:12:22,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:22,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3294027] [2022-01-10 12:12:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:22,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:23,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:23,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3294027] [2022-01-10 12:12:23,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3294027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:23,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:23,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:12:23,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697592516] [2022-01-10 12:12:23,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:23,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:23,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:23,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:23,103 INFO L87 Difference]: Start difference. First operand 1239 states and 2139 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:23,398 INFO L93 Difference]: Finished difference Result 3529 states and 6157 transitions. [2022-01-10 12:12:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:12:23,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-10 12:12:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:23,409 INFO L225 Difference]: With dead ends: 3529 [2022-01-10 12:12:23,409 INFO L226 Difference]: Without dead ends: 2340 [2022-01-10 12:12:23,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:23,413 INFO L933 BasicCegarLoop]: 1205 mSDtfsCounter, 1890 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:23,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 1809 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2022-01-10 12:12:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1239. [2022-01-10 12:12:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.7261712439418417) internal successors, (2137), 1238 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2137 transitions. [2022-01-10 12:12:23,570 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2137 transitions. Word has length 92 [2022-01-10 12:12:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:23,571 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 2137 transitions. [2022-01-10 12:12:23,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2137 transitions. [2022-01-10 12:12:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:12:23,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:23,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:23,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:12:23,578 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1527247858, now seen corresponding path program 1 times [2022-01-10 12:12:23,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:23,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370158088] [2022-01-10 12:12:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:23,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:23,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:23,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370158088] [2022-01-10 12:12:23,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370158088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:23,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:23,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:12:23,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046322419] [2022-01-10 12:12:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:23,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:12:23,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:23,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:12:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:12:23,763 INFO L87 Difference]: Start difference. First operand 1239 states and 2137 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:24,298 INFO L93 Difference]: Finished difference Result 4795 states and 8371 transitions. [2022-01-10 12:12:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:12:24,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:12:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:24,321 INFO L225 Difference]: With dead ends: 4795 [2022-01-10 12:12:24,321 INFO L226 Difference]: Without dead ends: 4734 [2022-01-10 12:12:24,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:12:24,325 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 2761 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:24,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 3434 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-01-10 12:12:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 2322. [2022-01-10 12:12:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 1.7470917707884532) internal successors, (4055), 2321 states have internal predecessors, (4055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 4055 transitions. [2022-01-10 12:12:24,583 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 4055 transitions. Word has length 93 [2022-01-10 12:12:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:24,584 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 4055 transitions. [2022-01-10 12:12:24,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 4055 transitions. [2022-01-10 12:12:24,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:12:24,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:24,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:24,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:12:24,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1042238541, now seen corresponding path program 1 times [2022-01-10 12:12:24,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:24,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645493651] [2022-01-10 12:12:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:24,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:24,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:24,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645493651] [2022-01-10 12:12:24,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645493651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:24,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:24,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:12:24,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274193883] [2022-01-10 12:12:24,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:24,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:12:24,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:12:24,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:12:24,799 INFO L87 Difference]: Start difference. First operand 2322 states and 4055 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:25,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:25,781 INFO L93 Difference]: Finished difference Result 5941 states and 10192 transitions. [2022-01-10 12:12:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:12:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:12:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:25,806 INFO L225 Difference]: With dead ends: 5941 [2022-01-10 12:12:25,807 INFO L226 Difference]: Without dead ends: 5653 [2022-01-10 12:12:25,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:12:25,812 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 3372 mSDsluCounter, 5236 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3372 SdHoareTripleChecker+Valid, 6024 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:25,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3372 Valid, 6024 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:12:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2022-01-10 12:12:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 4531. [2022-01-10 12:12:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4531 states, 4530 states have (on average 1.7565121412803533) internal successors, (7957), 4530 states have internal predecessors, (7957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 7957 transitions. [2022-01-10 12:12:26,307 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 7957 transitions. Word has length 93 [2022-01-10 12:12:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:26,313 INFO L470 AbstractCegarLoop]: Abstraction has 4531 states and 7957 transitions. [2022-01-10 12:12:26,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 7957 transitions. [2022-01-10 12:12:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 12:12:26,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:26,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:26,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:12:26,332 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:26,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash 789984496, now seen corresponding path program 1 times [2022-01-10 12:12:26,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:26,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58799064] [2022-01-10 12:12:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:26,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:26,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:26,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58799064] [2022-01-10 12:12:26,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58799064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:26,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:26,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:26,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814723123] [2022-01-10 12:12:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:26,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:12:26,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:12:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:12:26,465 INFO L87 Difference]: Start difference. First operand 4531 states and 7957 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:26,917 INFO L93 Difference]: Finished difference Result 4993 states and 8700 transitions. [2022-01-10 12:12:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:12:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 12:12:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:26,946 INFO L225 Difference]: With dead ends: 4993 [2022-01-10 12:12:26,947 INFO L226 Difference]: Without dead ends: 4593 [2022-01-10 12:12:26,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:26,951 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 458 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:26,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 1612 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2022-01-10 12:12:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4531. [2022-01-10 12:12:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4531 states, 4530 states have (on average 1.754746136865342) internal successors, (7949), 4530 states have internal predecessors, (7949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 7949 transitions. [2022-01-10 12:12:27,403 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 7949 transitions. Word has length 94 [2022-01-10 12:12:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:27,403 INFO L470 AbstractCegarLoop]: Abstraction has 4531 states and 7949 transitions. [2022-01-10 12:12:27,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 7949 transitions. [2022-01-10 12:12:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 12:12:27,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:27,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:27,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:12:27,417 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:27,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1420443121, now seen corresponding path program 1 times [2022-01-10 12:12:27,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:27,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891835235] [2022-01-10 12:12:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:27,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:27,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:27,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891835235] [2022-01-10 12:12:27,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891835235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:27,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:27,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:12:27,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119210342] [2022-01-10 12:12:27,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:27,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:12:27,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:27,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:12:27,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:27,577 INFO L87 Difference]: Start difference. First operand 4531 states and 7949 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:28,317 INFO L93 Difference]: Finished difference Result 6167 states and 10611 transitions. [2022-01-10 12:12:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:12:28,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 12:12:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:28,336 INFO L225 Difference]: With dead ends: 6167 [2022-01-10 12:12:28,336 INFO L226 Difference]: Without dead ends: 6088 [2022-01-10 12:12:28,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-10 12:12:28,341 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 1646 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:28,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 5142 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2022-01-10 12:12:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 4917. [2022-01-10 12:12:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4917 states, 4916 states have (on average 1.7455248169243287) internal successors, (8581), 4916 states have internal predecessors, (8581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 8581 transitions. [2022-01-10 12:12:28,909 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 8581 transitions. Word has length 94 [2022-01-10 12:12:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:28,910 INFO L470 AbstractCegarLoop]: Abstraction has 4917 states and 8581 transitions. [2022-01-10 12:12:28,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 8581 transitions. [2022-01-10 12:12:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 12:12:28,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:28,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:28,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:12:28,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:28,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:28,926 INFO L85 PathProgramCache]: Analyzing trace with hash -614691861, now seen corresponding path program 1 times [2022-01-10 12:12:28,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:28,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867106694] [2022-01-10 12:12:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:28,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:29,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867106694] [2022-01-10 12:12:29,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867106694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:29,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:29,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:29,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847942459] [2022-01-10 12:12:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:29,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:29,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:29,124 INFO L87 Difference]: Start difference. First operand 4917 states and 8581 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:30,146 INFO L93 Difference]: Finished difference Result 9715 states and 16583 transitions. [2022-01-10 12:12:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:12:30,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 12:12:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:30,183 INFO L225 Difference]: With dead ends: 9715 [2022-01-10 12:12:30,183 INFO L226 Difference]: Without dead ends: 9072 [2022-01-10 12:12:30,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:30,196 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 1221 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:30,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 2848 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2022-01-10 12:12:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 7603. [2022-01-10 12:12:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7603 states, 7602 states have (on average 1.7412523020257826) internal successors, (13237), 7602 states have internal predecessors, (13237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7603 states to 7603 states and 13237 transitions. [2022-01-10 12:12:30,982 INFO L78 Accepts]: Start accepts. Automaton has 7603 states and 13237 transitions. Word has length 95 [2022-01-10 12:12:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:30,982 INFO L470 AbstractCegarLoop]: Abstraction has 7603 states and 13237 transitions. [2022-01-10 12:12:30,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7603 states and 13237 transitions. [2022-01-10 12:12:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 12:12:31,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:31,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:31,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:12:31,003 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash -138924853, now seen corresponding path program 1 times [2022-01-10 12:12:31,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:31,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318181211] [2022-01-10 12:12:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:31,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:31,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:31,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318181211] [2022-01-10 12:12:31,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318181211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:31,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:31,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:31,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206462965] [2022-01-10 12:12:31,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:31,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:31,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:31,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:31,157 INFO L87 Difference]: Start difference. First operand 7603 states and 13237 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:31,993 INFO L93 Difference]: Finished difference Result 7692 states and 13356 transitions. [2022-01-10 12:12:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:12:31,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 12:12:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:32,017 INFO L225 Difference]: With dead ends: 7692 [2022-01-10 12:12:32,017 INFO L226 Difference]: Without dead ends: 7603 [2022-01-10 12:12:32,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:32,026 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 513 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2004 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 [2022-01-10 12:12:32,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 2004 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7603 states. [2022-01-10 12:12:32,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7603 to 7603. [2022-01-10 12:12:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7603 states, 7602 states have (on average 1.7407261247040253) internal successors, (13233), 7602 states have internal predecessors, (13233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7603 states to 7603 states and 13233 transitions. [2022-01-10 12:12:32,858 INFO L78 Accepts]: Start accepts. Automaton has 7603 states and 13233 transitions. Word has length 95 [2022-01-10 12:12:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:32,858 INFO L470 AbstractCegarLoop]: Abstraction has 7603 states and 13233 transitions. [2022-01-10 12:12:32,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 7603 states and 13233 transitions. [2022-01-10 12:12:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:12:32,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:32,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:32,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:12:32,881 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 729751110, now seen corresponding path program 1 times [2022-01-10 12:12:32,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:32,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471254192] [2022-01-10 12:12:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:32,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:33,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471254192] [2022-01-10 12:12:33,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471254192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:33,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:33,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:33,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899500937] [2022-01-10 12:12:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:33,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:33,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:33,035 INFO L87 Difference]: Start difference. First operand 7603 states and 13233 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:34,323 INFO L93 Difference]: Finished difference Result 15237 states and 26523 transitions. [2022-01-10 12:12:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:12:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 12:12:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:34,371 INFO L225 Difference]: With dead ends: 15237 [2022-01-10 12:12:34,372 INFO L226 Difference]: Without dead ends: 15108 [2022-01-10 12:12:34,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:34,382 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 583 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:34,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2533 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15108 states. [2022-01-10 12:12:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15108 to 14775. [2022-01-10 12:12:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14775 states, 14774 states have (on average 1.7496277243806688) internal successors, (25849), 14774 states have internal predecessors, (25849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14775 states to 14775 states and 25849 transitions. [2022-01-10 12:12:35,824 INFO L78 Accepts]: Start accepts. Automaton has 14775 states and 25849 transitions. Word has length 100 [2022-01-10 12:12:35,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:35,825 INFO L470 AbstractCegarLoop]: Abstraction has 14775 states and 25849 transitions. [2022-01-10 12:12:35,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 14775 states and 25849 transitions. [2022-01-10 12:12:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 12:12:35,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:35,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:35,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:12:35,868 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash -413109763, now seen corresponding path program 1 times [2022-01-10 12:12:35,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:35,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512856153] [2022-01-10 12:12:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:35,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:36,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:36,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512856153] [2022-01-10 12:12:36,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512856153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:36,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:36,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:36,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927766912] [2022-01-10 12:12:36,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:36,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:36,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:36,008 INFO L87 Difference]: Start difference. First operand 14775 states and 25849 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:37,937 INFO L93 Difference]: Finished difference Result 29581 states and 51755 transitions. [2022-01-10 12:12:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:12:37,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 12:12:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:38,027 INFO L225 Difference]: With dead ends: 29581 [2022-01-10 12:12:38,028 INFO L226 Difference]: Without dead ends: 29452 [2022-01-10 12:12:38,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:38,039 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 582 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:38,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 2527 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29452 states. [2022-01-10 12:12:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29452 to 29123. [2022-01-10 12:12:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29123 states, 29122 states have (on average 1.754309456768079) internal successors, (51089), 29122 states have internal predecessors, (51089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29123 states to 29123 states and 51089 transitions. [2022-01-10 12:12:40,297 INFO L78 Accepts]: Start accepts. Automaton has 29123 states and 51089 transitions. Word has length 101 [2022-01-10 12:12:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:40,297 INFO L470 AbstractCegarLoop]: Abstraction has 29123 states and 51089 transitions. [2022-01-10 12:12:40,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 29123 states and 51089 transitions. [2022-01-10 12:12:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:12:40,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:40,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:40,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:12:40,395 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash 280892332, now seen corresponding path program 1 times [2022-01-10 12:12:40,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:40,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592148974] [2022-01-10 12:12:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:40,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:40,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:40,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592148974] [2022-01-10 12:12:40,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592148974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:40,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:40,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:12:40,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901641239] [2022-01-10 12:12:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:40,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:12:40,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:12:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:12:40,594 INFO L87 Difference]: Start difference. First operand 29123 states and 51089 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:43,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:43,770 INFO L93 Difference]: Finished difference Result 35459 states and 61401 transitions. [2022-01-10 12:12:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 12:12:43,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:12:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:43,883 INFO L225 Difference]: With dead ends: 35459 [2022-01-10 12:12:43,884 INFO L226 Difference]: Without dead ends: 35337 [2022-01-10 12:12:43,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2022-01-10 12:12:43,915 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 2878 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 5341 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:43,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2878 Valid, 5341 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35337 states. [2022-01-10 12:12:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35337 to 29261. [2022-01-10 12:12:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29261 states, 29260 states have (on average 1.7528024606971975) internal successors, (51287), 29260 states have internal predecessors, (51287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29261 states to 29261 states and 51287 transitions. [2022-01-10 12:12:46,529 INFO L78 Accepts]: Start accepts. Automaton has 29261 states and 51287 transitions. Word has length 102 [2022-01-10 12:12:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:46,529 INFO L470 AbstractCegarLoop]: Abstraction has 29261 states and 51287 transitions. [2022-01-10 12:12:46,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 29261 states and 51287 transitions. [2022-01-10 12:12:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:12:46,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:46,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:46,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:12:46,599 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2006373229, now seen corresponding path program 1 times [2022-01-10 12:12:46,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922516383] [2022-01-10 12:12:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:46,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:46,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:46,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922516383] [2022-01-10 12:12:46,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922516383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:46,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:46,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 12:12:46,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888857122] [2022-01-10 12:12:46,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:46,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 12:12:46,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 12:12:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:12:46,870 INFO L87 Difference]: Start difference. First operand 29261 states and 51287 transitions. Second operand has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:54,127 INFO L93 Difference]: Finished difference Result 71195 states and 120632 transitions. [2022-01-10 12:12:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-10 12:12:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 12:12:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:54,303 INFO L225 Difference]: With dead ends: 71195 [2022-01-10 12:12:54,303 INFO L226 Difference]: Without dead ends: 71172 [2022-01-10 12:12:54,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=747, Invalid=1905, Unknown=0, NotChecked=0, Total=2652 [2022-01-10 12:12:54,337 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 6509 mSDsluCounter, 9314 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6509 SdHoareTripleChecker+Valid, 10124 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:54,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6509 Valid, 10124 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:12:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71172 states. [2022-01-10 12:12:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71172 to 49750. [2022-01-10 12:12:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49750 states, 49749 states have (on average 1.7472713019357173) internal successors, (86925), 49749 states have internal predecessors, (86925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49750 states to 49750 states and 86925 transitions. [2022-01-10 12:12:58,055 INFO L78 Accepts]: Start accepts. Automaton has 49750 states and 86925 transitions. Word has length 102 [2022-01-10 12:12:58,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:58,055 INFO L470 AbstractCegarLoop]: Abstraction has 49750 states and 86925 transitions. [2022-01-10 12:12:58,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.846153846153846) internal successors, (102), 12 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:12:58,055 INFO L276 IsEmpty]: Start isEmpty. Operand 49750 states and 86925 transitions. [2022-01-10 12:12:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 12:12:58,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:58,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:58,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:12:58,153 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:58,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:58,154 INFO L85 PathProgramCache]: Analyzing trace with hash -904253839, now seen corresponding path program 1 times [2022-01-10 12:12:58,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:58,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751589307] [2022-01-10 12:12:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:58,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:12:58,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:58,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751589307] [2022-01-10 12:12:58,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751589307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:58,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:58,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:12:58,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006349758] [2022-01-10 12:12:58,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:58,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:12:58,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:12:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:58,242 INFO L87 Difference]: Start difference. First operand 49750 states and 86925 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:01,500 INFO L93 Difference]: Finished difference Result 79002 states and 138200 transitions. [2022-01-10 12:13:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:13:01,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 [2022-01-10 12:13:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:01,582 INFO L225 Difference]: With dead ends: 79002 [2022-01-10 12:13:01,583 INFO L226 Difference]: Without dead ends: 49750 [2022-01-10 12:13:01,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:13:01,622 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 10 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:01,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1263 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49750 states. [2022-01-10 12:13:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49750 to 49750. [2022-01-10 12:13:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49750 states, 49749 states have (on average 1.7472311001226155) internal successors, (86923), 49749 states have internal predecessors, (86923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49750 states to 49750 states and 86923 transitions. [2022-01-10 12:13:05,276 INFO L78 Accepts]: Start accepts. Automaton has 49750 states and 86923 transitions. Word has length 103 [2022-01-10 12:13:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:05,276 INFO L470 AbstractCegarLoop]: Abstraction has 49750 states and 86923 transitions. [2022-01-10 12:13:05,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 49750 states and 86923 transitions. [2022-01-10 12:13:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 12:13:05,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:05,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:05,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:13:05,352 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:05,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1801085581, now seen corresponding path program 1 times [2022-01-10 12:13:05,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:05,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058263565] [2022-01-10 12:13:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:05,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:05,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:05,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058263565] [2022-01-10 12:13:05,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058263565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:05,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:05,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:13:05,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429028616] [2022-01-10 12:13:05,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:05,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:13:05,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:13:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:13:05,672 INFO L87 Difference]: Start difference. First operand 49750 states and 86923 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:09,038 INFO L93 Difference]: Finished difference Result 49863 states and 87074 transitions. [2022-01-10 12:13:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:13:09,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 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 [2022-01-10 12:13:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:09,137 INFO L225 Difference]: With dead ends: 49863 [2022-01-10 12:13:09,137 INFO L226 Difference]: Without dead ends: 49750 [2022-01-10 12:13:09,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2022-01-10 12:13:09,154 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1040 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 4637 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:09,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 4637 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49750 states.