/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/elevator_spec2_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:55:35,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:55:35,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:55:35,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:55:35,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:55:35,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:55:35,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:55:35,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:55:35,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:55:35,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:55:35,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:55:35,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:55:35,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:55:35,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:55:35,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:55:35,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:55:35,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:55:35,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:55:35,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:55:35,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:55:35,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:55:35,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:55:35,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:55:35,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:55:35,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:55:35,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:55:35,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:55:35,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:55:35,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:55:35,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:55:35,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:55:35,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:55:35,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:55:35,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:55:35,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:55:35,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:55:35,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:55:35,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:55:35,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:55:35,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:55:35,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:55:35,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:55:35,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:55:35,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:55:35,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:55:35,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:55:35,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:55:35,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:55:35,435 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:55:35,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:55:35,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:55:35,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:55:35,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:55:35,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:55:35,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:55:35,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:55:35,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:55:35,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:55:35,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:55:35,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:55:35,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:55:35,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:55:35,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:55:35,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:55:35,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:55:35,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:55:35,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:55:35,440 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:55:35,440 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:55:35,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:55:35,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:55:35,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:55:35,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:55:35,632 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:55:35,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2022-01-10 17:55:35,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013d43173/2d26ccef5bd24a799b83687e44d7b19b/FLAG7e3337b91 [2022-01-10 17:55:36,125 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:55:36,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2022-01-10 17:55:36,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013d43173/2d26ccef5bd24a799b83687e44d7b19b/FLAG7e3337b91 [2022-01-10 17:55:36,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013d43173/2d26ccef5bd24a799b83687e44d7b19b [2022-01-10 17:55:36,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:55:36,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:55:36,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:55:36,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:55:36,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:55:36,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:55:36" (1/1) ... [2022-01-10 17:55:36,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8ae7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:36, skipping insertion in model container [2022-01-10 17:55:36,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:55:36" (1/1) ... [2022-01-10 17:55:36,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:55:36,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:55:36,713 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/elevator_spec2_product11.cil.c[1545,1558] [2022-01-10 17:55:36,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:55:36,971 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:55:36,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:55:36,992 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/elevator_spec2_product11.cil.c[1545,1558] [2022-01-10 17:55:37,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:55:37,089 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:55:37,097 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/elevator_spec2_product11.cil.c[1545,1558] [2022-01-10 17:55:37,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:55:37,174 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:55:37,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37 WrapperNode [2022-01-10 17:55:37,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:55:37,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:55:37,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:55:37,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:55:37,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,340 INFO L137 Inliner]: procedures = 95, calls = 338, calls flagged for inlining = 191, calls inlined = 282, statements flattened = 8634 [2022-01-10 17:55:37,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:55:37,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:55:37,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:55:37,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:55:37,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:55:37,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:55:37,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:55:37,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:55:37,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (1/1) ... [2022-01-10 17:55:37,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:55:37,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:55:37,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 17:55:37,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 17:55:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:55:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:55:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:55:37,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:55:37,760 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:55:37,762 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:55:40,858 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:55:40,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:55:40,878 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:55:40,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:55:40 BoogieIcfgContainer [2022-01-10 17:55:40,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:55:40,883 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:55:40,883 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:55:40,884 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:55:40,886 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:55:40" (1/1) ... [2022-01-10 17:55:41,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:55:41 BasicIcfg [2022-01-10 17:55:41,396 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:55:41,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:55:41,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:55:41,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:55:41,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:55:36" (1/4) ... [2022-01-10 17:55:41,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5658f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:55:41, skipping insertion in model container [2022-01-10 17:55:41,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:55:37" (2/4) ... [2022-01-10 17:55:41,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5658f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:55:41, skipping insertion in model container [2022-01-10 17:55:41,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:55:40" (3/4) ... [2022-01-10 17:55:41,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5658f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:55:41, skipping insertion in model container [2022-01-10 17:55:41,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:55:41" (4/4) ... [2022-01-10 17:55:41,401 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.cTransformedIcfg [2022-01-10 17:55:41,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:55:41,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:55:41,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:55:41,458 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:55:41,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:55:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 2484 states, 2478 states have (on average 1.8672316384180792) internal successors, (4627), 2483 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 17:55:41,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:41,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:41,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:41,517 INFO L85 PathProgramCache]: Analyzing trace with hash -56420824, now seen corresponding path program 1 times [2022-01-10 17:55:41,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:41,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462224784] [2022-01-10 17:55:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:41,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:41,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:41,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462224784] [2022-01-10 17:55:41,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462224784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:41,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:41,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:41,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812650922] [2022-01-10 17:55:41,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:41,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:41,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:41,788 INFO L87 Difference]: Start difference. First operand has 2484 states, 2478 states have (on average 1.8672316384180792) internal successors, (4627), 2483 states have internal predecessors, (4627), 0 states have call successors, (0), 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 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:42,032 INFO L93 Difference]: Finished difference Result 4953 states and 9231 transitions. [2022-01-10 17:55:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:42,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 17:55:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:42,055 INFO L225 Difference]: With dead ends: 4953 [2022-01-10 17:55:42,056 INFO L226 Difference]: Without dead ends: 2473 [2022-01-10 17:55:42,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:42,068 INFO L933 BasicCegarLoop]: 4606 mSDtfsCounter, 4601 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:42,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4601 Valid, 4617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-01-10 17:55:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-01-10 17:55:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2468 states have (on average 1.8650729335494327) internal successors, (4603), 2472 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4603 transitions. [2022-01-10 17:55:42,177 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4603 transitions. Word has length 51 [2022-01-10 17:55:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:42,177 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4603 transitions. [2022-01-10 17:55:42,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4603 transitions. [2022-01-10 17:55:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:55:42,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:42,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:42,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:55:42,180 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash -51954454, now seen corresponding path program 1 times [2022-01-10 17:55:42,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:42,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149128864] [2022-01-10 17:55:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:42,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:42,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:42,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149128864] [2022-01-10 17:55:42,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149128864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:42,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:42,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:55:42,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362355592] [2022-01-10 17:55:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:42,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:55:42,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:55:42,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:55:42,398 INFO L87 Difference]: Start difference. First operand 2473 states and 4603 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:42,528 INFO L93 Difference]: Finished difference Result 4932 states and 9191 transitions. [2022-01-10 17:55:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 17:55:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:42,539 INFO L225 Difference]: With dead ends: 4932 [2022-01-10 17:55:42,540 INFO L226 Difference]: Without dead ends: 2473 [2022-01-10 17:55:42,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:55:42,544 INFO L933 BasicCegarLoop]: 4596 mSDtfsCounter, 18374 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18374 SdHoareTripleChecker+Valid, 4603 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:42,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18374 Valid, 4603 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-01-10 17:55:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-01-10 17:55:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2468 states have (on average 1.8646677471636952) internal successors, (4602), 2472 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4602 transitions. [2022-01-10 17:55:42,609 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4602 transitions. Word has length 58 [2022-01-10 17:55:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:42,610 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4602 transitions. [2022-01-10 17:55:42,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4602 transitions. [2022-01-10 17:55:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:55:42,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:42,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:42,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:55:42,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:42,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1648786025, now seen corresponding path program 1 times [2022-01-10 17:55:42,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:42,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813342607] [2022-01-10 17:55:42,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:42,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:42,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:42,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813342607] [2022-01-10 17:55:42,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813342607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:42,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:42,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:42,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477032299] [2022-01-10 17:55:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:42,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:42,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:42,734 INFO L87 Difference]: Start difference. First operand 2473 states and 4602 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:42,927 INFO L93 Difference]: Finished difference Result 4896 states and 9119 transitions. [2022-01-10 17:55:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:42,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 17:55:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:42,936 INFO L225 Difference]: With dead ends: 4896 [2022-01-10 17:55:42,936 INFO L226 Difference]: Without dead ends: 2473 [2022-01-10 17:55:42,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:42,943 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4561 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 4556 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:42,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4561 Valid, 4556 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-01-10 17:55:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-01-10 17:55:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2468 states have (on average 1.8545380875202593) internal successors, (4577), 2472 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4577 transitions. [2022-01-10 17:55:42,998 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4577 transitions. Word has length 58 [2022-01-10 17:55:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:42,998 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4577 transitions. [2022-01-10 17:55:42,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4577 transitions. [2022-01-10 17:55:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:55:43,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:43,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:43,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:55:43,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash 667890762, now seen corresponding path program 1 times [2022-01-10 17:55:43,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8555947] [2022-01-10 17:55:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:43,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:43,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:43,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8555947] [2022-01-10 17:55:43,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8555947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:43,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:43,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:43,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744780079] [2022-01-10 17:55:43,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:43,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:43,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:43,091 INFO L87 Difference]: Start difference. First operand 2473 states and 4577 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:43,209 INFO L93 Difference]: Finished difference Result 5547 states and 10316 transitions. [2022-01-10 17:55:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:55:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:43,226 INFO L225 Difference]: With dead ends: 5547 [2022-01-10 17:55:43,226 INFO L226 Difference]: Without dead ends: 4287 [2022-01-10 17:55:43,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:43,234 INFO L933 BasicCegarLoop]: 4874 mSDtfsCounter, 4511 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4511 SdHoareTripleChecker+Valid, 8265 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:43,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4511 Valid, 8265 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4287 states. [2022-01-10 17:55:43,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4287 to 4287. [2022-01-10 17:55:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4287 states, 4282 states have (on average 1.8629145259224662) internal successors, (7977), 4286 states have internal predecessors, (7977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 7977 transitions. [2022-01-10 17:55:43,345 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 7977 transitions. Word has length 61 [2022-01-10 17:55:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:43,346 INFO L470 AbstractCegarLoop]: Abstraction has 4287 states and 7977 transitions. [2022-01-10 17:55:43,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 7977 transitions. [2022-01-10 17:55:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 17:55:43,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:43,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:43,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:55:43,400 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1406012166, now seen corresponding path program 1 times [2022-01-10 17:55:43,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:43,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120960657] [2022-01-10 17:55:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:43,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:43,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:43,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120960657] [2022-01-10 17:55:43,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120960657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:43,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:43,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628881541] [2022-01-10 17:55:43,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:43,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:43,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:43,500 INFO L87 Difference]: Start difference. First operand 4287 states and 7977 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:43,693 INFO L93 Difference]: Finished difference Result 10302 states and 19212 transitions. [2022-01-10 17:55:43,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:43,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 17:55:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:43,721 INFO L225 Difference]: With dead ends: 10302 [2022-01-10 17:55:43,722 INFO L226 Difference]: Without dead ends: 7806 [2022-01-10 17:55:43,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:43,729 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 4510 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 7968 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:43,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4510 Valid, 7968 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7806 states. [2022-01-10 17:55:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7806 to 7804. [2022-01-10 17:55:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7804 states, 7799 states have (on average 1.867547121425824) internal successors, (14565), 7803 states have internal predecessors, (14565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7804 states to 7804 states and 14565 transitions. [2022-01-10 17:55:43,964 INFO L78 Accepts]: Start accepts. Automaton has 7804 states and 14565 transitions. Word has length 63 [2022-01-10 17:55:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:43,967 INFO L470 AbstractCegarLoop]: Abstraction has 7804 states and 14565 transitions. [2022-01-10 17:55:43,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7804 states and 14565 transitions. [2022-01-10 17:55:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 17:55:43,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:43,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:43,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:55:43,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1044929672, now seen corresponding path program 1 times [2022-01-10 17:55:43,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:43,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004606616] [2022-01-10 17:55:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:43,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:44,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:44,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004606616] [2022-01-10 17:55:44,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004606616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:44,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:44,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:44,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412640781] [2022-01-10 17:55:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:44,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:44,036 INFO L87 Difference]: Start difference. First operand 7804 states and 14565 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:44,326 INFO L93 Difference]: Finished difference Result 19578 states and 36561 transitions. [2022-01-10 17:55:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 17:55:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:44,382 INFO L225 Difference]: With dead ends: 19578 [2022-01-10 17:55:44,382 INFO L226 Difference]: Without dead ends: 14619 [2022-01-10 17:55:44,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:44,396 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 4498 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 7971 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:44,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 7971 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14619 states. [2022-01-10 17:55:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14619 to 14615. [2022-01-10 17:55:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14615 states, 14610 states have (on average 1.8696098562628336) internal successors, (27315), 14614 states have internal predecessors, (27315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14615 states to 14615 states and 27315 transitions. [2022-01-10 17:55:44,751 INFO L78 Accepts]: Start accepts. Automaton has 14615 states and 27315 transitions. Word has length 64 [2022-01-10 17:55:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:44,752 INFO L470 AbstractCegarLoop]: Abstraction has 14615 states and 27315 transitions. [2022-01-10 17:55:44,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 14615 states and 27315 transitions. [2022-01-10 17:55:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:55:44,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:44,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:44,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:55:44,755 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:44,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1966932901, now seen corresponding path program 1 times [2022-01-10 17:55:44,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:44,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981603450] [2022-01-10 17:55:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:44,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:44,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981603450] [2022-01-10 17:55:44,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981603450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:44,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:44,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:44,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802158003] [2022-01-10 17:55:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:44,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:44,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:44,844 INFO L87 Difference]: Start difference. First operand 14615 states and 27315 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:45,258 INFO L93 Difference]: Finished difference Result 37662 states and 70370 transitions. [2022-01-10 17:55:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:45,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 17:55:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:45,324 INFO L225 Difference]: With dead ends: 37662 [2022-01-10 17:55:45,324 INFO L226 Difference]: Without dead ends: 27796 [2022-01-10 17:55:45,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:45,346 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 4497 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 7974 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:45,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4497 Valid, 7974 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27796 states. [2022-01-10 17:55:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27796 to 27790. [2022-01-10 17:55:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27790 states, 27785 states have (on average 1.8701097714594206) internal successors, (51961), 27789 states have internal predecessors, (51961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27790 states to 27790 states and 51961 transitions. [2022-01-10 17:55:45,977 INFO L78 Accepts]: Start accepts. Automaton has 27790 states and 51961 transitions. Word has length 65 [2022-01-10 17:55:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:45,978 INFO L470 AbstractCegarLoop]: Abstraction has 27790 states and 51961 transitions. [2022-01-10 17:55:45,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 27790 states and 51961 transitions. [2022-01-10 17:55:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 17:55:45,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:45,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:45,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:55:45,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash 845392217, now seen corresponding path program 1 times [2022-01-10 17:55:45,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:45,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754588315] [2022-01-10 17:55:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:45,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:46,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:46,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754588315] [2022-01-10 17:55:46,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754588315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:46,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:46,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:46,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624261997] [2022-01-10 17:55:46,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:46,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:46,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:46,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:46,055 INFO L87 Difference]: Start difference. First operand 27790 states and 51961 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:46,905 INFO L93 Difference]: Finished difference Result 72894 states and 136206 transitions. [2022-01-10 17:55:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 17:55:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:47,062 INFO L225 Difference]: With dead ends: 72894 [2022-01-10 17:55:47,063 INFO L226 Difference]: Without dead ends: 53246 [2022-01-10 17:55:47,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:47,097 INFO L933 BasicCegarLoop]: 4575 mSDtfsCounter, 4496 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 7978 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:47,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4496 Valid, 7978 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53246 states. [2022-01-10 17:55:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53246 to 53238. [2022-01-10 17:55:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53238 states, 53233 states have (on average 1.8696860969699247) internal successors, (99529), 53237 states have internal predecessors, (99529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53238 states to 53238 states and 99529 transitions. [2022-01-10 17:55:48,432 INFO L78 Accepts]: Start accepts. Automaton has 53238 states and 99529 transitions. Word has length 66 [2022-01-10 17:55:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:48,433 INFO L470 AbstractCegarLoop]: Abstraction has 53238 states and 99529 transitions. [2022-01-10 17:55:48,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 53238 states and 99529 transitions. [2022-01-10 17:55:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 17:55:48,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:48,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:48,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:55:48,453 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1259719586, now seen corresponding path program 1 times [2022-01-10 17:55:48,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:48,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555891803] [2022-01-10 17:55:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:48,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:48,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:48,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555891803] [2022-01-10 17:55:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555891803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:48,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:48,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:48,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157536359] [2022-01-10 17:55:48,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:48,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:48,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:48,512 INFO L87 Difference]: Start difference. First operand 53238 states and 99529 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:50,047 INFO L93 Difference]: Finished difference Result 108579 states and 202962 transitions. [2022-01-10 17:55:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:50,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 17:55:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:50,179 INFO L225 Difference]: With dead ends: 108579 [2022-01-10 17:55:50,180 INFO L226 Difference]: Without dead ends: 56288 [2022-01-10 17:55:50,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:50,229 INFO L933 BasicCegarLoop]: 5173 mSDtfsCounter, 3499 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 7461 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:50,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3499 Valid, 7461 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 17:55:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56288 states. [2022-01-10 17:55:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56288 to 53238. [2022-01-10 17:55:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53238 states, 53233 states have (on average 1.844231961377341) internal successors, (98174), 53237 states have internal predecessors, (98174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53238 states to 53238 states and 98174 transitions. [2022-01-10 17:55:51,549 INFO L78 Accepts]: Start accepts. Automaton has 53238 states and 98174 transitions. Word has length 105 [2022-01-10 17:55:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:51,549 INFO L470 AbstractCegarLoop]: Abstraction has 53238 states and 98174 transitions. [2022-01-10 17:55:51,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 53238 states and 98174 transitions. [2022-01-10 17:55:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 17:55:51,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:51,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:51,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:55:51,569 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2038757881, now seen corresponding path program 1 times [2022-01-10 17:55:51,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:51,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696556951] [2022-01-10 17:55:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:51,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:51,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:51,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696556951] [2022-01-10 17:55:51,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696556951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:51,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:51,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:51,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200769242] [2022-01-10 17:55:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:51,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:51,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:51,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:51,619 INFO L87 Difference]: Start difference. First operand 53238 states and 98174 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:53,076 INFO L93 Difference]: Finished difference Result 110274 states and 203513 transitions. [2022-01-10 17:55:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:53,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 17:55:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:53,191 INFO L225 Difference]: With dead ends: 110274 [2022-01-10 17:55:53,191 INFO L226 Difference]: Without dead ends: 59141 [2022-01-10 17:55:53,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:53,235 INFO L933 BasicCegarLoop]: 5651 mSDtfsCounter, 3224 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3224 SdHoareTripleChecker+Valid, 8229 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:53,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3224 Valid, 8229 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 17:55:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59141 states. [2022-01-10 17:55:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59141 to 53238. [2022-01-10 17:55:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53238 states, 53233 states have (on average 1.8223470403696955) internal successors, (97009), 53237 states have internal predecessors, (97009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53238 states to 53238 states and 97009 transitions. [2022-01-10 17:55:54,417 INFO L78 Accepts]: Start accepts. Automaton has 53238 states and 97009 transitions. Word has length 110 [2022-01-10 17:55:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:54,417 INFO L470 AbstractCegarLoop]: Abstraction has 53238 states and 97009 transitions. [2022-01-10 17:55:54,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 53238 states and 97009 transitions. [2022-01-10 17:55:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 17:55:54,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:54,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:54,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:55:54,433 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1942368729, now seen corresponding path program 1 times [2022-01-10 17:55:54,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:54,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53124578] [2022-01-10 17:55:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:54,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:54,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53124578] [2022-01-10 17:55:54,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53124578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:54,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:54,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:54,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694523241] [2022-01-10 17:55:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:54,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:54,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:54,482 INFO L87 Difference]: Start difference. First operand 53238 states and 97009 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:55,970 INFO L93 Difference]: Finished difference Result 111642 states and 203997 transitions. [2022-01-10 17:55:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 17:55:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:56,084 INFO L225 Difference]: With dead ends: 111642 [2022-01-10 17:55:56,084 INFO L226 Difference]: Without dead ends: 62747 [2022-01-10 17:55:56,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:56,129 INFO L933 BasicCegarLoop]: 6021 mSDtfsCounter, 3071 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:56,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3071 Valid, 8889 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:55:56,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62747 states. [2022-01-10 17:55:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62747 to 53238. [2022-01-10 17:55:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53238 states, 53233 states have (on average 1.804970600943024) internal successors, (96084), 53237 states have internal predecessors, (96084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53238 states to 53238 states and 96084 transitions. [2022-01-10 17:55:57,379 INFO L78 Accepts]: Start accepts. Automaton has 53238 states and 96084 transitions. Word has length 114 [2022-01-10 17:55:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:57,380 INFO L470 AbstractCegarLoop]: Abstraction has 53238 states and 96084 transitions. [2022-01-10 17:55:57,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:57,380 INFO L276 IsEmpty]: Start isEmpty. Operand 53238 states and 96084 transitions. [2022-01-10 17:55:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 17:55:57,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:57,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:57,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:55:57,394 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:57,395 INFO L85 PathProgramCache]: Analyzing trace with hash 206754320, now seen corresponding path program 1 times [2022-01-10 17:55:57,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:57,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018478634] [2022-01-10 17:55:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:57,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:57,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:57,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018478634] [2022-01-10 17:55:57,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018478634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:57,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:57,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:57,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726860868] [2022-01-10 17:55:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:57,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:57,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:57,488 INFO L87 Difference]: Start difference. First operand 53238 states and 96084 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:59,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:59,426 INFO L93 Difference]: Finished difference Result 136136 states and 247311 transitions. [2022-01-10 17:55:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:59,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-10 17:55:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:59,592 INFO L225 Difference]: With dead ends: 136136 [2022-01-10 17:55:59,592 INFO L226 Difference]: Without dead ends: 90118 [2022-01-10 17:55:59,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:59,639 INFO L933 BasicCegarLoop]: 6846 mSDtfsCounter, 2806 mSDsluCounter, 3555 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 10401 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:59,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2806 Valid, 10401 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 17:55:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90118 states. [2022-01-10 17:56:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90118 to 52923. [2022-01-10 17:56:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52923 states, 52918 states have (on average 1.7919044559507162) internal successors, (94824), 52922 states have internal predecessors, (94824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52923 states to 52923 states and 94824 transitions. [2022-01-10 17:56:01,093 INFO L78 Accepts]: Start accepts. Automaton has 52923 states and 94824 transitions. Word has length 117 [2022-01-10 17:56:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:01,094 INFO L470 AbstractCegarLoop]: Abstraction has 52923 states and 94824 transitions. [2022-01-10 17:56:01,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52923 states and 94824 transitions. [2022-01-10 17:56:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 17:56:01,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:01,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:01,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:56:01,109 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:01,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1661049565, now seen corresponding path program 1 times [2022-01-10 17:56:01,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:01,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272101066] [2022-01-10 17:56:01,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:01,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:01,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:01,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272101066] [2022-01-10 17:56:01,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272101066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:01,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:01,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:01,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998813938] [2022-01-10 17:56:01,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:01,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:01,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:01,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:01,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:01,184 INFO L87 Difference]: Start difference. First operand 52923 states and 94824 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:02,781 INFO L93 Difference]: Finished difference Result 108956 states and 196958 transitions. [2022-01-10 17:56:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-10 17:56:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:02,895 INFO L225 Difference]: With dead ends: 108956 [2022-01-10 17:56:02,895 INFO L226 Difference]: Without dead ends: 66683 [2022-01-10 17:56:02,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:02,931 INFO L933 BasicCegarLoop]: 6431 mSDtfsCounter, 2558 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 9879 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:02,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2558 Valid, 9879 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:56:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66683 states. [2022-01-10 17:56:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66683 to 52923. [2022-01-10 17:56:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52923 states, 52918 states have (on average 1.779810272497071) internal successors, (94184), 52922 states have internal predecessors, (94184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52923 states to 52923 states and 94184 transitions. [2022-01-10 17:56:04,211 INFO L78 Accepts]: Start accepts. Automaton has 52923 states and 94184 transitions. Word has length 118 [2022-01-10 17:56:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:04,211 INFO L470 AbstractCegarLoop]: Abstraction has 52923 states and 94184 transitions. [2022-01-10 17:56:04,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 52923 states and 94184 transitions. [2022-01-10 17:56:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 17:56:04,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:04,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:04,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:56:04,226 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1595791797, now seen corresponding path program 1 times [2022-01-10 17:56:04,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:04,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900038958] [2022-01-10 17:56:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:04,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:04,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:04,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900038958] [2022-01-10 17:56:04,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900038958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:04,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:04,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:56:04,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61212471] [2022-01-10 17:56:04,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:04,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:56:04,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:56:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:56:04,298 INFO L87 Difference]: Start difference. First operand 52923 states and 94184 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:06,449 INFO L93 Difference]: Finished difference Result 158669 states and 282432 transitions. [2022-01-10 17:56:06,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:56:06,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-10 17:56:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:06,654 INFO L225 Difference]: With dead ends: 158669 [2022-01-10 17:56:06,654 INFO L226 Difference]: Without dead ends: 105775 [2022-01-10 17:56:06,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:56:06,705 INFO L933 BasicCegarLoop]: 8700 mSDtfsCounter, 13046 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13046 SdHoareTripleChecker+Valid, 13083 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:06,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13046 Valid, 13083 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:56:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105775 states. [2022-01-10 17:56:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105775 to 52902. [2022-01-10 17:56:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52902 states, 52897 states have (on average 1.7799875229219049) internal successors, (94156), 52901 states have internal predecessors, (94156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52902 states to 52902 states and 94156 transitions. [2022-01-10 17:56:08,438 INFO L78 Accepts]: Start accepts. Automaton has 52902 states and 94156 transitions. Word has length 119 [2022-01-10 17:56:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:08,438 INFO L470 AbstractCegarLoop]: Abstraction has 52902 states and 94156 transitions. [2022-01-10 17:56:08,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand 52902 states and 94156 transitions. [2022-01-10 17:56:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 17:56:08,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:08,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:08,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:56:08,451 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:08,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1590956324, now seen corresponding path program 1 times [2022-01-10 17:56:08,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:08,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949922134] [2022-01-10 17:56:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:08,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:08,515 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 17:56:08,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:08,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949922134] [2022-01-10 17:56:08,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949922134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:08,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:08,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:56:08,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11389863] [2022-01-10 17:56:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:08,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:56:08,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:56:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:56:08,516 INFO L87 Difference]: Start difference. First operand 52902 states and 94156 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:09,935 INFO L93 Difference]: Finished difference Result 105775 states and 188280 transitions. [2022-01-10 17:56:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:56:09,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 17:56:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:10,043 INFO L225 Difference]: With dead ends: 105775 [2022-01-10 17:56:10,043 INFO L226 Difference]: Without dead ends: 52896 [2022-01-10 17:56:10,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:56:10,083 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 8693 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8693 SdHoareTripleChecker+Valid, 4383 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:10,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8693 Valid, 4383 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:56:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52896 states. [2022-01-10 17:56:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52896 to 52896. [2022-01-10 17:56:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52896 states, 52891 states have (on average 1.7800381917528503) internal successors, (94148), 52895 states have internal predecessors, (94148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52896 states to 52896 states and 94148 transitions. [2022-01-10 17:56:11,577 INFO L78 Accepts]: Start accepts. Automaton has 52896 states and 94148 transitions. Word has length 121 [2022-01-10 17:56:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:11,578 INFO L470 AbstractCegarLoop]: Abstraction has 52896 states and 94148 transitions. [2022-01-10 17:56:11,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 52896 states and 94148 transitions. [2022-01-10 17:56:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 17:56:11,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:11,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:11,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 17:56:11,590 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash 836786823, now seen corresponding path program 1 times [2022-01-10 17:56:11,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:11,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828865990] [2022-01-10 17:56:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:11,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:11,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:11,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828865990] [2022-01-10 17:56:11,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828865990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:11,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:11,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:56:11,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685982556] [2022-01-10 17:56:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:11,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:56:11,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:56:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:56:11,646 INFO L87 Difference]: Start difference. First operand 52896 states and 94148 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:13,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:13,073 INFO L93 Difference]: Finished difference Result 105763 states and 188261 transitions. [2022-01-10 17:56:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:56:13,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 17:56:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:13,169 INFO L225 Difference]: With dead ends: 105763 [2022-01-10 17:56:13,169 INFO L226 Difference]: Without dead ends: 52896 [2022-01-10 17:56:13,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:56:13,205 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 13017 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13017 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:13,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13017 Valid, 4384 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:56:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52896 states. [2022-01-10 17:56:14,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52896 to 52896. [2022-01-10 17:56:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52896 states, 52891 states have (on average 1.7800192849445085) internal successors, (94147), 52895 states have internal predecessors, (94147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52896 states to 52896 states and 94147 transitions. [2022-01-10 17:56:14,770 INFO L78 Accepts]: Start accepts. Automaton has 52896 states and 94147 transitions. Word has length 122 [2022-01-10 17:56:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:14,771 INFO L470 AbstractCegarLoop]: Abstraction has 52896 states and 94147 transitions. [2022-01-10 17:56:14,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 52896 states and 94147 transitions. [2022-01-10 17:56:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 17:56:14,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:14,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:14,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 17:56:14,783 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1011266818, now seen corresponding path program 1 times [2022-01-10 17:56:14,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:14,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395330674] [2022-01-10 17:56:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:14,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:14,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:14,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395330674] [2022-01-10 17:56:14,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395330674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:14,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:14,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:14,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166061607] [2022-01-10 17:56:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:14,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:56:14,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:56:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:56:14,839 INFO L87 Difference]: Start difference. First operand 52896 states and 94147 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:17,835 INFO L93 Difference]: Finished difference Result 152377 states and 270400 transitions. [2022-01-10 17:56:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:56:17,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-10 17:56:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:18,025 INFO L225 Difference]: With dead ends: 152377 [2022-01-10 17:56:18,026 INFO L226 Difference]: Without dead ends: 99518 [2022-01-10 17:56:18,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:56:18,069 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 11537 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11537 SdHoareTripleChecker+Valid, 8027 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:18,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11537 Valid, 8027 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 17:56:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99518 states. [2022-01-10 17:56:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99518 to 52896. [2022-01-10 17:56:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52896 states, 52891 states have (on average 1.760129322569057) internal successors, (93095), 52895 states have internal predecessors, (93095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52896 states to 52896 states and 93095 transitions. [2022-01-10 17:56:20,016 INFO L78 Accepts]: Start accepts. Automaton has 52896 states and 93095 transitions. Word has length 123 [2022-01-10 17:56:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:20,016 INFO L470 AbstractCegarLoop]: Abstraction has 52896 states and 93095 transitions. [2022-01-10 17:56:20,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 52896 states and 93095 transitions. [2022-01-10 17:56:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 17:56:20,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:20,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:20,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 17:56:20,028 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash -182255730, now seen corresponding path program 1 times [2022-01-10 17:56:20,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561606442] [2022-01-10 17:56:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:20,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:20,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:20,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561606442] [2022-01-10 17:56:20,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561606442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:20,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:20,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:56:20,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169910461] [2022-01-10 17:56:20,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:20,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:56:20,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:20,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:56:20,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:56:20,087 INFO L87 Difference]: Start difference. First operand 52896 states and 93095 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:35,846 INFO L93 Difference]: Finished difference Result 600821 states and 1054112 transitions. [2022-01-10 17:56:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 17:56:35,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-10 17:56:35,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted.