/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:18:17,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:18:17,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:18:17,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:18:17,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:18:17,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:18:17,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:18:17,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:18:17,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:18:17,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:18:17,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:18:17,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:18:17,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:18:17,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:18:17,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:18:17,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:18:17,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:18:17,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:18:17,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:18:17,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:18:17,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:18:17,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:18:17,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:18:17,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:18:17,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:18:17,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:18:17,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:18:17,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:18:17,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:18:17,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:18:17,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:18:17,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:18:17,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:18:17,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:18:17,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:18:17,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:18:17,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:18:17,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:18:17,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:18:17,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:18:17,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:18:17,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:18:17,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:18:17,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:18:17,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:18:17,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:18:17,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:18:17,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:18:17,526 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:18:17,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:18:17,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:18:17,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:18:17,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:18:17,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:18:17,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:18:17,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:18:17,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:18:17,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:18:17,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:18:17,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:18:17,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:18:17,529 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:18:17,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:18:17,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:18:17,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:18:17,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:18:17,530 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:18:17,530 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:18:17,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:18:17,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:18:17,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:18:17,797 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:18:17,797 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:18:17,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2022-01-10 18:18:17,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682904257/bb223440242e455798b97086002b6016/FLAGcc7c78bb4 [2022-01-10 18:18:18,305 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:18:18,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2022-01-10 18:18:18,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682904257/bb223440242e455798b97086002b6016/FLAGcc7c78bb4 [2022-01-10 18:18:18,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682904257/bb223440242e455798b97086002b6016 [2022-01-10 18:18:18,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:18:18,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:18:18,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:18:18,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:18:18,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:18:18,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:18,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd22f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18, skipping insertion in model container [2022-01-10 18:18:18,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:18,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:18:18,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:18:18,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c[3971,3984] [2022-01-10 18:18:18,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:18:18,704 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:18:18,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:18:18,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c[3971,3984] [2022-01-10 18:18:18,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:18:18,806 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:18:18,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c[3971,3984] [2022-01-10 18:18:18,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:18:18,898 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:18:18,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18 WrapperNode [2022-01-10 18:18:18,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:18:18,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:18:18,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:18:18,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:18:18,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:18,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:18,994 INFO L137 Inliner]: procedures = 61, calls = 162, calls flagged for inlining = 59, calls inlined = 145, statements flattened = 1044 [2022-01-10 18:18:18,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:18:19,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:18:19,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:18:19,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:18:19,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:18:19,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:18:19,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:18:19,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:18:19,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (1/1) ... [2022-01-10 18:18:19,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:18:19,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:18:19,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:18:19,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:18:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:18:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:18:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:18:19,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:18:19,271 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:18:19,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:18:19,917 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:18:19,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:18:19,932 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 18:18:19,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:19 BoogieIcfgContainer [2022-01-10 18:18:19,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:18:19,935 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:18:19,936 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:18:19,937 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:18:19,939 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:19" (1/1) ... [2022-01-10 18:18:20,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:18:20 BasicIcfg [2022-01-10 18:18:20,099 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:18:20,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:18:20,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:18:20,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:18:20,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:18:18" (1/4) ... [2022-01-10 18:18:20,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566d312c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:20, skipping insertion in model container [2022-01-10 18:18:20,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:18:18" (2/4) ... [2022-01-10 18:18:20,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566d312c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:18:20, skipping insertion in model container [2022-01-10 18:18:20,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:18:19" (3/4) ... [2022-01-10 18:18:20,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566d312c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:18:20, skipping insertion in model container [2022-01-10 18:18:20,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:18:20" (4/4) ... [2022-01-10 18:18:20,105 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.cTransformedIcfg [2022-01-10 18:18:20,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:18:20,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 18:18:20,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:18:20,150 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:18:20,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 18:18:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 283 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 18:18:20,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:20,172 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] [2022-01-10 18:18:20,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash 630024251, now seen corresponding path program 1 times [2022-01-10 18:18:20,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:20,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9541183] [2022-01-10 18:18:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:20,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:20,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:20,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9541183] [2022-01-10 18:18:20,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9541183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:20,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:20,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:18:20,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500024563] [2022-01-10 18:18:20,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:20,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:18:20,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:18:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:18:20,479 INFO L87 Difference]: Start difference. First operand has 284 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 283 states have internal predecessors, (386), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:20,529 INFO L93 Difference]: Finished difference Result 557 states and 760 transitions. [2022-01-10 18:18:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:18:20,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-01-10 18:18:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:20,539 INFO L225 Difference]: With dead ends: 557 [2022-01-10 18:18:20,539 INFO L226 Difference]: Without dead ends: 274 [2022-01-10 18:18:20,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:18:20,545 INFO L933 BasicCegarLoop]: 376 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, 376 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:20,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:18:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-10 18:18:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-01-10 18:18:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.3579335793357934) internal successors, (368), 273 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 368 transitions. [2022-01-10 18:18:20,591 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 368 transitions. Word has length 21 [2022-01-10 18:18:20,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:20,592 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 368 transitions. [2022-01-10 18:18:20,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,592 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 368 transitions. [2022-01-10 18:18:20,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 18:18:20,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:20,593 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] [2022-01-10 18:18:20,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:18:20,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:20,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:20,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1254743465, now seen corresponding path program 1 times [2022-01-10 18:18:20,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:20,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639682822] [2022-01-10 18:18:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:20,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:20,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:20,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639682822] [2022-01-10 18:18:20,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639682822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:20,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:20,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:18:20,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19158949] [2022-01-10 18:18:20,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:20,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:18:20,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:18:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:18:20,663 INFO L87 Difference]: Start difference. First operand 274 states and 368 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:20,704 INFO L93 Difference]: Finished difference Result 540 states and 728 transitions. [2022-01-10 18:18:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:18:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-01-10 18:18:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:20,706 INFO L225 Difference]: With dead ends: 540 [2022-01-10 18:18:20,706 INFO L226 Difference]: Without dead ends: 274 [2022-01-10 18:18:20,708 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 18:18:20,709 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 350 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:20,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 362 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:18:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-10 18:18:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-01-10 18:18:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.3468634686346863) internal successors, (365), 273 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2022-01-10 18:18:20,731 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 22 [2022-01-10 18:18:20,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:20,732 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2022-01-10 18:18:20,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2022-01-10 18:18:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 18:18:20,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:20,733 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] [2022-01-10 18:18:20,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:18:20,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:20,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1726703231, now seen corresponding path program 1 times [2022-01-10 18:18:20,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:20,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070887714] [2022-01-10 18:18:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:20,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:20,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:20,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070887714] [2022-01-10 18:18:20,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070887714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:20,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:20,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:18:20,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070789199] [2022-01-10 18:18:20,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:20,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:18:20,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:18:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:18:20,828 INFO L87 Difference]: Start difference. First operand 274 states and 365 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:20,982 INFO L93 Difference]: Finished difference Result 566 states and 749 transitions. [2022-01-10 18:18:20,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:18:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-10 18:18:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:20,984 INFO L225 Difference]: With dead ends: 566 [2022-01-10 18:18:20,984 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 18:18:20,986 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 18:18:20,987 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 184 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:20,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 437 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:18:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 18:18:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2022-01-10 18:18:21,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 291 states have (on average 1.2852233676975946) internal successors, (374), 293 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 374 transitions. [2022-01-10 18:18:21,023 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 374 transitions. Word has length 28 [2022-01-10 18:18:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:21,024 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 374 transitions. [2022-01-10 18:18:21,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 374 transitions. [2022-01-10 18:18:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 18:18:21,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:21,025 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] [2022-01-10 18:18:21,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:18:21,026 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1538414416, now seen corresponding path program 1 times [2022-01-10 18:18:21,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:21,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220465524] [2022-01-10 18:18:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:21,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:21,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:21,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220465524] [2022-01-10 18:18:21,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220465524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:21,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:21,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:18:21,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967205356] [2022-01-10 18:18:21,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:21,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:18:21,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:21,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:18:21,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:18:21,126 INFO L87 Difference]: Start difference. First operand 294 states and 374 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:21,346 INFO L93 Difference]: Finished difference Result 779 states and 974 transitions. [2022-01-10 18:18:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:18:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 18:18:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:21,350 INFO L225 Difference]: With dead ends: 779 [2022-01-10 18:18:21,350 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 18:18:21,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:18:21,363 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 477 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:21,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1242 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:18:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 18:18:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 321. [2022-01-10 18:18:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 1.2610062893081762) internal successors, (401), 320 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 401 transitions. [2022-01-10 18:18:21,408 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 401 transitions. Word has length 35 [2022-01-10 18:18:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:21,409 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 401 transitions. [2022-01-10 18:18:21,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 401 transitions. [2022-01-10 18:18:21,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 18:18:21,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:21,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:21,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:18:21,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash -129454224, now seen corresponding path program 1 times [2022-01-10 18:18:21,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:21,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520018041] [2022-01-10 18:18:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:21,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:21,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:21,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520018041] [2022-01-10 18:18:21,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520018041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:21,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:21,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:18:21,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667924847] [2022-01-10 18:18:21,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:21,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:18:21,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:18:21,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:18:21,518 INFO L87 Difference]: Start difference. First operand 321 states and 401 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:21,805 INFO L93 Difference]: Finished difference Result 1110 states and 1370 transitions. [2022-01-10 18:18:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:18:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 18:18:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:21,809 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 18:18:21,809 INFO L226 Difference]: Without dead ends: 797 [2022-01-10 18:18:21,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:18:21,810 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 726 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:21,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 1518 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:18:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-10 18:18:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 318. [2022-01-10 18:18:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 315 states have (on average 1.2444444444444445) internal successors, (392), 317 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 392 transitions. [2022-01-10 18:18:21,845 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 392 transitions. Word has length 35 [2022-01-10 18:18:21,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:21,846 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 392 transitions. [2022-01-10 18:18:21,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 392 transitions. [2022-01-10 18:18:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 18:18:21,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:21,847 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] [2022-01-10 18:18:21,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:18:21,847 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:21,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1249001071, now seen corresponding path program 1 times [2022-01-10 18:18:21,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:21,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327510480] [2022-01-10 18:18:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:21,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:21,886 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 18:18:21,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:21,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327510480] [2022-01-10 18:18:21,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327510480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:21,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:21,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:18:21,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655513940] [2022-01-10 18:18:21,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:21,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:18:21,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:18:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:18:21,888 INFO L87 Difference]: Start difference. First operand 318 states and 392 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:22,049 INFO L93 Difference]: Finished difference Result 851 states and 1028 transitions. [2022-01-10 18:18:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:18:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 18:18:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:22,053 INFO L225 Difference]: With dead ends: 851 [2022-01-10 18:18:22,053 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 18:18:22,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:18:22,055 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 390 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:22,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 866 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:18:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 18:18:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 336. [2022-01-10 18:18:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 333 states have (on average 1.2312312312312312) internal successors, (410), 335 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 410 transitions. [2022-01-10 18:18:22,090 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 410 transitions. Word has length 35 [2022-01-10 18:18:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:22,090 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 410 transitions. [2022-01-10 18:18:22,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 410 transitions. [2022-01-10 18:18:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 18:18:22,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:22,093 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] [2022-01-10 18:18:22,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:18:22,093 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 104308626, now seen corresponding path program 1 times [2022-01-10 18:18:22,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:22,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507788752] [2022-01-10 18:18:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:22,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:22,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:22,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507788752] [2022-01-10 18:18:22,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507788752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:22,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:22,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:18:22,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576580433] [2022-01-10 18:18:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:22,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:18:22,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:18:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:18:22,159 INFO L87 Difference]: Start difference. First operand 336 states and 410 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:22,176 INFO L93 Difference]: Finished difference Result 336 states and 410 transitions. [2022-01-10 18:18:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:18:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 18:18:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:22,177 INFO L225 Difference]: With dead ends: 336 [2022-01-10 18:18:22,177 INFO L226 Difference]: Without dead ends: 134 [2022-01-10 18:18:22,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:18:22,179 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 102 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:22,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 117 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:18:22,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-10 18:18:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-01-10 18:18:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 133 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2022-01-10 18:18:22,193 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 35 [2022-01-10 18:18:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:22,193 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2022-01-10 18:18:22,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2022-01-10 18:18:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 18:18:22,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:22,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:22,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:18:22,195 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:22,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:22,195 INFO L85 PathProgramCache]: Analyzing trace with hash -938542321, now seen corresponding path program 1 times [2022-01-10 18:18:22,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:22,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719210718] [2022-01-10 18:18:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:22,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:22,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:22,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719210718] [2022-01-10 18:18:22,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719210718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:22,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:22,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:18:22,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636205273] [2022-01-10 18:18:22,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:22,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:18:22,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:18:22,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:18:22,284 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:22,322 INFO L93 Difference]: Finished difference Result 298 states and 370 transitions. [2022-01-10 18:18:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:18:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-10 18:18:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:22,324 INFO L225 Difference]: With dead ends: 298 [2022-01-10 18:18:22,324 INFO L226 Difference]: Without dead ends: 172 [2022-01-10 18:18:22,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:18:22,325 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 26 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 199 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 18:18:22,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 199 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:18:22,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-10 18:18:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-01-10 18:18:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.2280701754385965) internal successors, (210), 171 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2022-01-10 18:18:22,351 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 42 [2022-01-10 18:18:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:22,352 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2022-01-10 18:18:22,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2022-01-10 18:18:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 18:18:22,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:22,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:22,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:18:22,354 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1022535189, now seen corresponding path program 1 times [2022-01-10 18:18:22,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:22,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953674506] [2022-01-10 18:18:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:22,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:22,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:22,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953674506] [2022-01-10 18:18:22,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953674506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:22,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:22,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:18:22,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248081157] [2022-01-10 18:18:22,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:22,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:18:22,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:22,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:18:22,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:18:22,495 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:22,710 INFO L93 Difference]: Finished difference Result 861 states and 1068 transitions. [2022-01-10 18:18:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:18:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 18:18:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:22,713 INFO L225 Difference]: With dead ends: 861 [2022-01-10 18:18:22,713 INFO L226 Difference]: Without dead ends: 735 [2022-01-10 18:18:22,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:18:22,714 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 530 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:22,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 891 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:18:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-01-10 18:18:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 303. [2022-01-10 18:18:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.2218543046357615) internal successors, (369), 302 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 369 transitions. [2022-01-10 18:18:22,749 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 369 transitions. Word has length 44 [2022-01-10 18:18:22,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:22,749 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 369 transitions. [2022-01-10 18:18:22,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 369 transitions. [2022-01-10 18:18:22,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:18:22,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:22,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:22,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:18:22,751 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:22,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash 564774556, now seen corresponding path program 1 times [2022-01-10 18:18:22,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:22,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010489064] [2022-01-10 18:18:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:22,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:22,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:22,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010489064] [2022-01-10 18:18:22,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010489064] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:18:22,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140590626] [2022-01-10 18:18:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:22,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:18:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:18:22,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:18:22,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:18:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:23,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 18:18:23,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:18:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:23,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:18:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:18:23,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140590626] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:18:23,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:18:23,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-10 18:18:23,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250574795] [2022-01-10 18:18:23,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:18:23,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:18:23,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:18:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:18:23,365 INFO L87 Difference]: Start difference. First operand 303 states and 369 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 18:18:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:23,470 INFO L93 Difference]: Finished difference Result 705 states and 882 transitions. [2022-01-10 18:18:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:18:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 80 [2022-01-10 18:18:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:23,474 INFO L225 Difference]: With dead ends: 705 [2022-01-10 18:18:23,474 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 18:18:23,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:18:23,476 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 231 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:23,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 462 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:18:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 18:18:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 263. [2022-01-10 18:18:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.202290076335878) internal successors, (315), 262 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 315 transitions. [2022-01-10 18:18:23,510 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 315 transitions. Word has length 80 [2022-01-10 18:18:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:23,510 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 315 transitions. [2022-01-10 18:18:23,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 18:18:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 315 transitions. [2022-01-10 18:18:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 18:18:23,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:23,511 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:23,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 18:18:23,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 18:18:23,728 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash -243494252, now seen corresponding path program 1 times [2022-01-10 18:18:23,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:23,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145005957] [2022-01-10 18:18:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:23,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 76 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-10 18:18:23,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:23,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145005957] [2022-01-10 18:18:23,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145005957] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:18:23,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363768746] [2022-01-10 18:18:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:23,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:18:23,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:18:23,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:18:23,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 18:18:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:24,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 18:18:24,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:18:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 18:18:24,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:18:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 18:18:24,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363768746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:18:24,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:18:24,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-10 18:18:24,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920840838] [2022-01-10 18:18:24,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:18:24,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 18:18:24,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 18:18:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:18:24,497 INFO L87 Difference]: Start difference. First operand 263 states and 315 transitions. Second operand has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:25,834 INFO L93 Difference]: Finished difference Result 2901 states and 3510 transitions. [2022-01-10 18:18:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-10 18:18:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 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 139 [2022-01-10 18:18:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:25,844 INFO L225 Difference]: With dead ends: 2901 [2022-01-10 18:18:25,844 INFO L226 Difference]: Without dead ends: 2489 [2022-01-10 18:18:25,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=3158, Unknown=0, NotChecked=0, Total=3906 [2022-01-10 18:18:25,847 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 2172 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:25,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 1779 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:18:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2022-01-10 18:18:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 636. [2022-01-10 18:18:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.1748031496062992) internal successors, (746), 635 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 746 transitions. [2022-01-10 18:18:25,941 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 746 transitions. Word has length 139 [2022-01-10 18:18:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:25,942 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 746 transitions. [2022-01-10 18:18:25,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:25,942 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 746 transitions. [2022-01-10 18:18:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 18:18:25,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:25,944 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:25,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 18:18:26,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 18:18:26,168 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2138407232, now seen corresponding path program 1 times [2022-01-10 18:18:26,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:26,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736723338] [2022-01-10 18:18:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:26,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 18:18:26,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:26,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736723338] [2022-01-10 18:18:26,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736723338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:26,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:26,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:18:26,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950820376] [2022-01-10 18:18:26,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:26,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:18:26,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:18:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:18:26,265 INFO L87 Difference]: Start difference. First operand 636 states and 746 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:26,497 INFO L93 Difference]: Finished difference Result 1853 states and 2181 transitions. [2022-01-10 18:18:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:18:26,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 143 [2022-01-10 18:18:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:26,502 INFO L225 Difference]: With dead ends: 1853 [2022-01-10 18:18:26,503 INFO L226 Difference]: Without dead ends: 1225 [2022-01-10 18:18:26,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:18:26,504 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 385 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:26,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 778 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:18:26,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-01-10 18:18:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 585. [2022-01-10 18:18:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.1592465753424657) internal successors, (677), 584 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 677 transitions. [2022-01-10 18:18:26,593 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 677 transitions. Word has length 143 [2022-01-10 18:18:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:26,593 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 677 transitions. [2022-01-10 18:18:26,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 677 transitions. [2022-01-10 18:18:26,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 18:18:26,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:26,595 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:26,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:18:26,595 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1559270656, now seen corresponding path program 2 times [2022-01-10 18:18:26,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:26,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447131570] [2022-01-10 18:18:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:26,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 18:18:26,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:26,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447131570] [2022-01-10 18:18:26,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447131570] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:18:26,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355350410] [2022-01-10 18:18:26,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 18:18:26,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:18:26,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:18:26,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:18:26,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 18:18:26,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 18:18:26,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 18:18:26,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 18:18:26,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:18:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 18:18:27,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 18:18:27,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355350410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:27,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 18:18:27,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-01-10 18:18:27,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564892808] [2022-01-10 18:18:27,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:27,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:18:27,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:18:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:18:27,291 INFO L87 Difference]: Start difference. First operand 585 states and 677 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:27,782 INFO L93 Difference]: Finished difference Result 1827 states and 2125 transitions. [2022-01-10 18:18:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:18:27,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 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 143 [2022-01-10 18:18:27,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:27,787 INFO L225 Difference]: With dead ends: 1827 [2022-01-10 18:18:27,787 INFO L226 Difference]: Without dead ends: 1479 [2022-01-10 18:18:27,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:18:27,788 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 532 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:27,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 810 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:18:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-01-10 18:18:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 742. [2022-01-10 18:18:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.1511470985155197) internal successors, (853), 741 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 853 transitions. [2022-01-10 18:18:27,935 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 853 transitions. Word has length 143 [2022-01-10 18:18:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:27,936 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 853 transitions. [2022-01-10 18:18:27,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 853 transitions. [2022-01-10 18:18:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 18:18:27,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:18:27,938 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:18:27,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 18:18:28,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:18:28,152 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:18:28,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:18:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1439150783, now seen corresponding path program 1 times [2022-01-10 18:18:28,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:18:28,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386202854] [2022-01-10 18:18:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:18:28,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:18:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:18:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 18:18:28,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:18:28,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386202854] [2022-01-10 18:18:28,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386202854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:18:28,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:18:28,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:18:28,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294851574] [2022-01-10 18:18:28,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:18:28,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:18:28,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:18:28,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:18:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:18:28,216 INFO L87 Difference]: Start difference. First operand 742 states and 853 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:18:28,340 INFO L93 Difference]: Finished difference Result 1348 states and 1541 transitions. [2022-01-10 18:18:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:18:28,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 143 [2022-01-10 18:18:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:18:28,341 INFO L225 Difference]: With dead ends: 1348 [2022-01-10 18:18:28,341 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 18:18:28,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:18:28,343 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 224 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:18:28,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 531 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:18:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 18:18:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 18:18:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 18:18:28,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2022-01-10 18:18:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:18:28,344 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 18:18:28,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:18:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 18:18:28,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 18:18:28,346 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 18:18:28,347 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 18:18:28,347 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 18:18:28,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:18:28,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 18:18:38,581 WARN L228 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 238 DAG size of output: 236 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:18:53,184 WARN L228 SmtUtils]: Spent 14.60s on a formula simplification. DAG size of input: 227 DAG size of output: 224 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:19:00,521 WARN L228 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 169 DAG size of output: 164 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:19:17,252 WARN L228 SmtUtils]: Spent 13.55s on a formula simplification. DAG size of input: 248 DAG size of output: 246 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:19:23,392 WARN L228 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 168 DAG size of output: 163 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:19:28,949 WARN L228 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 143 DAG size of output: 140 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)