/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:55:32,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:55:32,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:55:32,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:55:32,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:55:32,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:55:32,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:55:32,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:55:32,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:55:32,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:55:32,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:55:32,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:55:32,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:55:32,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:55:32,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:55:32,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:55:32,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:55:32,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:55:32,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:55:32,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:55:32,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:55:32,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:55:32,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:55:32,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:55:32,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:55:32,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:55:32,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:55:32,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:55:32,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:55:32,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:55:32,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:55:32,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:55:32,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:55:32,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:55:32,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:55:32,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:55:32,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:55:32,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:55:32,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:55:32,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:55:32,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:55:32,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:55:32,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:55:32,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:55:32,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:55:32,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:55:32,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:55:32,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:55:32,404 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:55:32,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:55:32,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:55:32,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:55:32,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:55:32,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:55:32,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:55:32,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:55:32,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:55:32,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:55:32,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:55:32,409 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:55:32,409 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:55:32,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:55:32,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:55:32,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:55:32,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:55:32,629 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:55:32,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2022-01-11 05:55:32,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/076f5ffd0/3934b6bdb29a459bb62d5b01d12e3bcd/FLAG7308527c0 [2022-01-11 05:55:33,071 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:55:33,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2022-01-11 05:55:33,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/076f5ffd0/3934b6bdb29a459bb62d5b01d12e3bcd/FLAG7308527c0 [2022-01-11 05:55:33,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/076f5ffd0/3934b6bdb29a459bb62d5b01d12e3bcd [2022-01-11 05:55:33,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:55:33,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:55:33,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:55:33,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:55:33,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:55:33,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c16f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33, skipping insertion in model container [2022-01-11 05:55:33,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:55:33,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:55:33,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c[3064,3077] [2022-01-11 05:55:33,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:55:33,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:55:33,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:55:33,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c[3064,3077] [2022-01-11 05:55:33,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:55:33,434 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:55:33,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c[3064,3077] [2022-01-11 05:55:33,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:55:33,496 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:55:33,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33 WrapperNode [2022-01-11 05:55:33,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:55:33,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:55:33,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:55:33,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:55:33,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,558 INFO L137 Inliner]: procedures = 58, calls = 158, calls flagged for inlining = 55, calls inlined = 102, statements flattened = 747 [2022-01-11 05:55:33,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:55:33,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:55:33,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:55:33,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:55:33,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:55:33,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:55:33,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:55:33,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:55:33,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (1/1) ... [2022-01-11 05:55:33,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:55:33,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:33,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:55:33,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:55:33,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:55:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:55:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:55:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:55:33,767 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:55:33,769 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:55:34,172 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:55:34,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:55:34,178 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 05:55:34,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:55:34 BoogieIcfgContainer [2022-01-11 05:55:34,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:55:34,181 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:55:34,181 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:55:34,182 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:55:34,184 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:55:34" (1/1) ... [2022-01-11 05:55:34,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:55:34 BasicIcfg [2022-01-11 05:55:34,287 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:55:34,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:55:34,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:55:34,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:55:34,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:55:33" (1/4) ... [2022-01-11 05:55:34,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215da555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:55:34, skipping insertion in model container [2022-01-11 05:55:34,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:33" (2/4) ... [2022-01-11 05:55:34,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215da555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:55:34, skipping insertion in model container [2022-01-11 05:55:34,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:55:34" (3/4) ... [2022-01-11 05:55:34,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215da555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:55:34, skipping insertion in model container [2022-01-11 05:55:34,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:55:34" (4/4) ... [2022-01-11 05:55:34,299 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product45.cil.cTransformedIcfg [2022-01-11 05:55:34,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:55:34,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 05:55:34,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:55:34,350 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:55:34,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 05:55:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 189 states have (on average 1.3703703703703705) internal successors, (259), 192 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 05:55:34,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:34,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:34,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:34,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1352515901, now seen corresponding path program 1 times [2022-01-11 05:55:34,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:34,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040881499] [2022-01-11 05:55:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:34,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:34,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040881499] [2022-01-11 05:55:34,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040881499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:34,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:34,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:34,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457725173] [2022-01-11 05:55:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:34,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:55:34,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:55:34,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:55:34,647 INFO L87 Difference]: Start difference. First operand has 193 states, 189 states have (on average 1.3703703703703705) internal successors, (259), 192 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:34,686 INFO L93 Difference]: Finished difference Result 375 states and 506 transitions. [2022-01-11 05:55:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:55:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-11 05:55:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:34,702 INFO L225 Difference]: With dead ends: 375 [2022-01-11 05:55:34,702 INFO L226 Difference]: Without dead ends: 183 [2022-01-11 05:55:34,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:55:34,710 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:34,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-11 05:55:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-01-11 05:55:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.3388888888888888) internal successors, (241), 182 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2022-01-11 05:55:34,755 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 21 [2022-01-11 05:55:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:34,755 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2022-01-11 05:55:34,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2022-01-11 05:55:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 05:55:34,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:34,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:34,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:55:34,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1713795475, now seen corresponding path program 1 times [2022-01-11 05:55:34,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:34,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566647775] [2022-01-11 05:55:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:34,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:34,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:34,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566647775] [2022-01-11 05:55:34,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566647775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:34,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:34,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:34,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882180075] [2022-01-11 05:55:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:34,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:34,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:34,827 INFO L87 Difference]: Start difference. First operand 183 states and 241 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:34,852 INFO L93 Difference]: Finished difference Result 358 states and 474 transitions. [2022-01-11 05:55:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:34,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-11 05:55:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:34,853 INFO L225 Difference]: With dead ends: 358 [2022-01-11 05:55:34,853 INFO L226 Difference]: Without dead ends: 183 [2022-01-11 05:55:34,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:34,855 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 224 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:34,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 235 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:34,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-11 05:55:34,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-01-11 05:55:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.3222222222222222) internal successors, (238), 182 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2022-01-11 05:55:34,866 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 22 [2022-01-11 05:55:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:34,867 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2022-01-11 05:55:34,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2022-01-11 05:55:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 05:55:34,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:34,871 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] [2022-01-11 05:55:34,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:55:34,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash 929219661, now seen corresponding path program 1 times [2022-01-11 05:55:34,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:34,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66533616] [2022-01-11 05:55:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:34,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:34,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:34,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66533616] [2022-01-11 05:55:34,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66533616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:34,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:34,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:34,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026796835] [2022-01-11 05:55:34,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:34,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:34,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:34,949 INFO L87 Difference]: Start difference. First operand 183 states and 238 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:35,052 INFO L93 Difference]: Finished difference Result 434 states and 563 transitions. [2022-01-11 05:55:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:35,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-01-11 05:55:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:35,054 INFO L225 Difference]: With dead ends: 434 [2022-01-11 05:55:35,054 INFO L226 Difference]: Without dead ends: 259 [2022-01-11 05:55:35,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:35,056 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 168 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:35,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 327 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-11 05:55:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 253. [2022-01-11 05:55:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 250 states have (on average 1.284) internal successors, (321), 252 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 321 transitions. [2022-01-11 05:55:35,088 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 321 transitions. Word has length 27 [2022-01-11 05:55:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:35,089 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 321 transitions. [2022-01-11 05:55:35,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 321 transitions. [2022-01-11 05:55:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 05:55:35,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:35,092 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] [2022-01-11 05:55:35,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:55:35,092 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:35,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash -202165263, now seen corresponding path program 1 times [2022-01-11 05:55:35,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:35,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280476391] [2022-01-11 05:55:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:35,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:35,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:35,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280476391] [2022-01-11 05:55:35,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280476391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:35,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:35,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:55:35,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254105455] [2022-01-11 05:55:35,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:35,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:55:35,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:35,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:55:35,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:35,201 INFO L87 Difference]: Start difference. First operand 253 states and 321 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:35,417 INFO L93 Difference]: Finished difference Result 898 states and 1128 transitions. [2022-01-11 05:55:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:55:35,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-11 05:55:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:35,421 INFO L225 Difference]: With dead ends: 898 [2022-01-11 05:55:35,421 INFO L226 Difference]: Without dead ends: 653 [2022-01-11 05:55:35,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:55:35,430 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 690 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:35,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 1248 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:35,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-01-11 05:55:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 250. [2022-01-11 05:55:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 247 states have (on average 1.263157894736842) internal successors, (312), 249 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 312 transitions. [2022-01-11 05:55:35,481 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 312 transitions. Word has length 33 [2022-01-11 05:55:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:35,481 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 312 transitions. [2022-01-11 05:55:35,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 312 transitions. [2022-01-11 05:55:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 05:55:35,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:35,482 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] [2022-01-11 05:55:35,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:55:35,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1643666873, now seen corresponding path program 1 times [2022-01-11 05:55:35,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:35,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521180958] [2022-01-11 05:55:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:35,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:35,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:35,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521180958] [2022-01-11 05:55:35,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521180958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:35,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:35,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:55:35,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398027748] [2022-01-11 05:55:35,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:35,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:55:35,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:35,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:55:35,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:35,559 INFO L87 Difference]: Start difference. First operand 250 states and 312 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:35,674 INFO L93 Difference]: Finished difference Result 647 states and 797 transitions. [2022-01-11 05:55:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:55:35,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 05:55:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:35,676 INFO L225 Difference]: With dead ends: 647 [2022-01-11 05:55:35,676 INFO L226 Difference]: Without dead ends: 405 [2022-01-11 05:55:35,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:55:35,681 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 350 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:35,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 941 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-01-11 05:55:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 268. [2022-01-11 05:55:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 265 states have (on average 1.2452830188679245) internal successors, (330), 267 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 330 transitions. [2022-01-11 05:55:35,713 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 330 transitions. Word has length 37 [2022-01-11 05:55:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:35,716 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 330 transitions. [2022-01-11 05:55:35,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 330 transitions. [2022-01-11 05:55:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 05:55:35,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:35,719 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] [2022-01-11 05:55:35,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:55:35,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:35,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1654228070, now seen corresponding path program 1 times [2022-01-11 05:55:35,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848458100] [2022-01-11 05:55:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:35,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:35,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:35,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848458100] [2022-01-11 05:55:35,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848458100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:35,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:35,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:55:35,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18752078] [2022-01-11 05:55:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:35,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:55:35,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:55:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:55:35,785 INFO L87 Difference]: Start difference. First operand 268 states and 330 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:35,873 INFO L93 Difference]: Finished difference Result 704 states and 854 transitions. [2022-01-11 05:55:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:55:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 05:55:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:35,875 INFO L225 Difference]: With dead ends: 704 [2022-01-11 05:55:35,875 INFO L226 Difference]: Without dead ends: 444 [2022-01-11 05:55:35,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:35,878 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 265 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:35,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 758 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-11 05:55:35,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 280. [2022-01-11 05:55:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 277 states have (on average 1.2346570397111913) internal successors, (342), 279 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 342 transitions. [2022-01-11 05:55:35,899 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 342 transitions. Word has length 37 [2022-01-11 05:55:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:35,900 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 342 transitions. [2022-01-11 05:55:35,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 342 transitions. [2022-01-11 05:55:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 05:55:35,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:35,901 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] [2022-01-11 05:55:35,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:55:35,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:35,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1245403845, now seen corresponding path program 1 times [2022-01-11 05:55:35,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:35,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380784268] [2022-01-11 05:55:35,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:35,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:35,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:35,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380784268] [2022-01-11 05:55:35,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380784268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:35,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:35,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:35,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125986320] [2022-01-11 05:55:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:35,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:35,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:35,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:35,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:35,985 INFO L87 Difference]: Start difference. First operand 280 states and 342 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:36,045 INFO L93 Difference]: Finished difference Result 636 states and 773 transitions. [2022-01-11 05:55:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:36,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 05:55:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:36,046 INFO L225 Difference]: With dead ends: 636 [2022-01-11 05:55:36,046 INFO L226 Difference]: Without dead ends: 315 [2022-01-11 05:55:36,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:36,048 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 83 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:36,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 426 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-01-11 05:55:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-01-11 05:55:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 312 states have (on average 1.2275641025641026) internal successors, (383), 314 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 383 transitions. [2022-01-11 05:55:36,074 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 383 transitions. Word has length 37 [2022-01-11 05:55:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:36,074 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 383 transitions. [2022-01-11 05:55:36,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 383 transitions. [2022-01-11 05:55:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 05:55:36,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:36,075 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] [2022-01-11 05:55:36,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:55:36,076 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1435603134, now seen corresponding path program 1 times [2022-01-11 05:55:36,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:36,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245242617] [2022-01-11 05:55:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:36,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:36,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:36,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245242617] [2022-01-11 05:55:36,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245242617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:36,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:36,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:55:36,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941332867] [2022-01-11 05:55:36,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:36,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:55:36,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:55:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:55:36,219 INFO L87 Difference]: Start difference. First operand 315 states and 383 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:36,492 INFO L93 Difference]: Finished difference Result 1497 states and 1829 transitions. [2022-01-11 05:55:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:55:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 05:55:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:36,496 INFO L225 Difference]: With dead ends: 1497 [2022-01-11 05:55:36,497 INFO L226 Difference]: Without dead ends: 1095 [2022-01-11 05:55:36,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:55:36,498 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 994 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:36,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 1528 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-01-11 05:55:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 566. [2022-01-11 05:55:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 563 states have (on average 1.2024866785079928) internal successors, (677), 565 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 677 transitions. [2022-01-11 05:55:36,547 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 677 transitions. Word has length 45 [2022-01-11 05:55:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:36,548 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 677 transitions. [2022-01-11 05:55:36,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 677 transitions. [2022-01-11 05:55:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:55:36,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:36,549 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:36,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:55:36,549 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1980074016, now seen corresponding path program 1 times [2022-01-11 05:55:36,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:36,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848517640] [2022-01-11 05:55:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:36,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:36,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:36,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848517640] [2022-01-11 05:55:36,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848517640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:36,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:36,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:55:36,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251800429] [2022-01-11 05:55:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:36,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:36,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:36,600 INFO L87 Difference]: Start difference. First operand 566 states and 677 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:36,634 INFO L93 Difference]: Finished difference Result 566 states and 677 transitions. [2022-01-11 05:55:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 05:55:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:36,636 INFO L225 Difference]: With dead ends: 566 [2022-01-11 05:55:36,636 INFO L226 Difference]: Without dead ends: 261 [2022-01-11 05:55:36,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:36,638 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:36,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 100 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-11 05:55:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2022-01-11 05:55:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.2346153846153847) internal successors, (321), 260 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 321 transitions. [2022-01-11 05:55:36,683 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 321 transitions. Word has length 67 [2022-01-11 05:55:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:36,683 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 321 transitions. [2022-01-11 05:55:36,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 321 transitions. [2022-01-11 05:55:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 05:55:36,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:36,684 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:36,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:55:36,684 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2017062807, now seen corresponding path program 1 times [2022-01-11 05:55:36,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:36,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903081704] [2022-01-11 05:55:36,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:36,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:36,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903081704] [2022-01-11 05:55:36,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903081704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:36,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:36,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:55:36,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697729567] [2022-01-11 05:55:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:36,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:55:36,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:55:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:55:36,767 INFO L87 Difference]: Start difference. First operand 261 states and 321 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:36,837 INFO L93 Difference]: Finished difference Result 592 states and 744 transitions. [2022-01-11 05:55:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:55:36,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 05:55:36,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:36,840 INFO L225 Difference]: With dead ends: 592 [2022-01-11 05:55:36,840 INFO L226 Difference]: Without dead ends: 339 [2022-01-11 05:55:36,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:55:36,842 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 153 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:36,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 451 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-11 05:55:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 241. [2022-01-11 05:55:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.2125) internal successors, (291), 240 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 291 transitions. [2022-01-11 05:55:36,866 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 291 transitions. Word has length 73 [2022-01-11 05:55:36,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:36,866 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 291 transitions. [2022-01-11 05:55:36,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 291 transitions. [2022-01-11 05:55:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 05:55:36,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:36,871 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:55:36,871 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 468742219, now seen corresponding path program 1 times [2022-01-11 05:55:36,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:36,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922880182] [2022-01-11 05:55:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:36,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 75 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-11 05:55:36,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:36,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922880182] [2022-01-11 05:55:36,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922880182] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:36,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395406646] [2022-01-11 05:55:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:36,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:36,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:36,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:55:37,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:55:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:37,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 05:55:37,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:55:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 05:55:37,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:55:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 05:55:37,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395406646] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:55:37,533 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:55:37,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-11 05:55:37,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109834657] [2022-01-11 05:55:37,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:55:37,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 05:55:37,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 05:55:37,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:55:37,535 INFO L87 Difference]: Start difference. First operand 241 states and 291 transitions. Second operand has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:38,568 INFO L93 Difference]: Finished difference Result 1993 states and 2434 transitions. [2022-01-11 05:55:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-11 05:55:38,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 0 states have call successors, (0), 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 132 [2022-01-11 05:55:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:38,573 INFO L225 Difference]: With dead ends: 1993 [2022-01-11 05:55:38,573 INFO L226 Difference]: Without dead ends: 1714 [2022-01-11 05:55:38,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=776, Invalid=3256, Unknown=0, NotChecked=0, Total=4032 [2022-01-11 05:55:38,575 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1663 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:38,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 1605 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:55:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-01-11 05:55:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 594. [2022-01-11 05:55:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.1838111298482294) internal successors, (702), 593 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 702 transitions. [2022-01-11 05:55:38,656 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 702 transitions. Word has length 132 [2022-01-11 05:55:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:38,656 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 702 transitions. [2022-01-11 05:55:38,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 702 transitions. [2022-01-11 05:55:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-11 05:55:38,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:38,658 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:38,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 05:55:38,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 05:55:38,872 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1594359042, now seen corresponding path program 1 times [2022-01-11 05:55:38,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:38,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376441894] [2022-01-11 05:55:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:38,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-11 05:55:38,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376441894] [2022-01-11 05:55:38,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376441894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:38,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:38,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:55:38,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545596673] [2022-01-11 05:55:38,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:38,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:55:38,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:55:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:55:38,930 INFO L87 Difference]: Start difference. First operand 594 states and 702 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:39,138 INFO L93 Difference]: Finished difference Result 1813 states and 2151 transitions. [2022-01-11 05:55:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:55:39,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-01-11 05:55:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:39,143 INFO L225 Difference]: With dead ends: 1813 [2022-01-11 05:55:39,143 INFO L226 Difference]: Without dead ends: 1227 [2022-01-11 05:55:39,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-11 05:55:39,145 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 467 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:39,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 960 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-01-11 05:55:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 563. [2022-01-11 05:55:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.1690391459074734) internal successors, (657), 562 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 657 transitions. [2022-01-11 05:55:39,254 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 657 transitions. Word has length 136 [2022-01-11 05:55:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:39,254 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 657 transitions. [2022-01-11 05:55:39,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 657 transitions. [2022-01-11 05:55:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-11 05:55:39,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:39,255 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:39,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:55:39,256 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:39,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1715470190, now seen corresponding path program 1 times [2022-01-11 05:55:39,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:39,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088391949] [2022-01-11 05:55:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:39,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-11 05:55:39,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:39,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088391949] [2022-01-11 05:55:39,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088391949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:39,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:39,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:55:39,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612202446] [2022-01-11 05:55:39,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:39,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:55:39,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:55:39,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:55:39,310 INFO L87 Difference]: Start difference. First operand 563 states and 657 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:39,442 INFO L93 Difference]: Finished difference Result 1472 states and 1724 transitions. [2022-01-11 05:55:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:55:39,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-01-11 05:55:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:39,445 INFO L225 Difference]: With dead ends: 1472 [2022-01-11 05:55:39,445 INFO L226 Difference]: Without dead ends: 917 [2022-01-11 05:55:39,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:55:39,446 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 282 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:39,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 711 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-01-11 05:55:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 501. [2022-01-11 05:55:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.164) internal successors, (582), 500 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 582 transitions. [2022-01-11 05:55:39,495 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 582 transitions. Word has length 138 [2022-01-11 05:55:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:39,495 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 582 transitions. [2022-01-11 05:55:39,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 582 transitions. [2022-01-11 05:55:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-11 05:55:39,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:39,496 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:39,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:55:39,497 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -562246190, now seen corresponding path program 2 times [2022-01-11 05:55:39,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:39,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511464122] [2022-01-11 05:55:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:39,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-11 05:55:39,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:39,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511464122] [2022-01-11 05:55:39,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511464122] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:39,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733103307] [2022-01-11 05:55:39,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:55:39,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:39,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:39,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:55:39,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:55:39,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:55:39,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:55:39,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 05:55:39,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:55:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-11 05:55:39,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:55:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-11 05:55:40,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733103307] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:40,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 05:55:40,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-01-11 05:55:40,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938924228] [2022-01-11 05:55:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:40,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:55:40,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:40,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:55:40,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-11 05:55:40,169 INFO L87 Difference]: Start difference. First operand 501 states and 582 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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) [2022-01-11 05:55:40,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:40,514 INFO L93 Difference]: Finished difference Result 1601 states and 1880 transitions. [2022-01-11 05:55:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 05:55:40,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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 138 [2022-01-11 05:55:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:40,518 INFO L225 Difference]: With dead ends: 1601 [2022-01-11 05:55:40,518 INFO L226 Difference]: Without dead ends: 1325 [2022-01-11 05:55:40,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-01-11 05:55:40,519 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 747 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:40,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 675 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2022-01-11 05:55:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 868. [2022-01-11 05:55:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.1753171856978086) internal successors, (1019), 867 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1019 transitions. [2022-01-11 05:55:40,647 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1019 transitions. Word has length 138 [2022-01-11 05:55:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:40,647 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1019 transitions. [2022-01-11 05:55:40,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 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) [2022-01-11 05:55:40,648 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1019 transitions. [2022-01-11 05:55:40,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 05:55:40,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:40,649 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:40,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 05:55:40,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-11 05:55:40,857 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:40,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash 645009124, now seen corresponding path program 3 times [2022-01-11 05:55:40,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:40,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168684674] [2022-01-11 05:55:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:40,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-11 05:55:40,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:40,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168684674] [2022-01-11 05:55:40,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168684674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:40,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:40,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:55:40,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326269835] [2022-01-11 05:55:40,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:40,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:55:40,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:40,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:55:40,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:40,914 INFO L87 Difference]: Start difference. First operand 868 states and 1019 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 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) [2022-01-11 05:55:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:41,055 INFO L93 Difference]: Finished difference Result 1845 states and 2165 transitions. [2022-01-11 05:55:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:55:41,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 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 140 [2022-01-11 05:55:41,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:41,058 INFO L225 Difference]: With dead ends: 1845 [2022-01-11 05:55:41,058 INFO L226 Difference]: Without dead ends: 985 [2022-01-11 05:55:41,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:55:41,059 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 122 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:41,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 445 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:41,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-01-11 05:55:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 868. [2022-01-11 05:55:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.1695501730103806) internal successors, (1014), 867 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1014 transitions. [2022-01-11 05:55:41,183 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1014 transitions. Word has length 140 [2022-01-11 05:55:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:41,183 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1014 transitions. [2022-01-11 05:55:41,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 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) [2022-01-11 05:55:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1014 transitions. [2022-01-11 05:55:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-11 05:55:41,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:41,185 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:41,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:55:41,185 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1655243031, now seen corresponding path program 1 times [2022-01-11 05:55:41,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:41,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343545108] [2022-01-11 05:55:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:41,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 103 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:55:41,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:41,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343545108] [2022-01-11 05:55:41,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343545108] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258461787] [2022-01-11 05:55:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:41,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:41,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:55:41,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 05:55:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:41,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-11 05:55:41,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:55:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 80 proven. 59 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:55:41,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:55:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 78 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:46,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258461787] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:55:46,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:55:46,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 12] total 25 [2022-01-11 05:55:46,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567300040] [2022-01-11 05:55:46,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:55:46,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-11 05:55:46,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-11 05:55:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2022-01-11 05:55:46,197 INFO L87 Difference]: Start difference. First operand 868 states and 1014 transitions. Second operand has 25 states, 25 states have (on average 12.56) internal successors, (314), 25 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:46,491 INFO L93 Difference]: Finished difference Result 1718 states and 2023 transitions. [2022-01-11 05:55:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:55:46,492 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.56) internal successors, (314), 25 states have internal predecessors, (314), 0 states have call successors, (0), 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 141 [2022-01-11 05:55:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:46,492 INFO L225 Difference]: With dead ends: 1718 [2022-01-11 05:55:46,492 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 05:55:46,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 266 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-01-11 05:55:46,495 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1119 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:46,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 1634 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 05:55:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 05:55:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 05:55:46,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2022-01-11 05:55:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:46,497 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 05:55:46,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.56) internal successors, (314), 25 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 05:55:46,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 05:55:46,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 05:55:46,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 05:55:46,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 05:55:46,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 05:55:46,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:46,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 05:56:02,958 WARN L228 SmtUtils]: Spent 16.22s on a formula simplification. DAG size of input: 314 DAG size of output: 309 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 05:56:26,056 WARN L228 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 364 DAG size of output: 360 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 05:56:41,948 WARN L228 SmtUtils]: Spent 11.58s on a formula simplification. DAG size of input: 257 DAG size of output: 251 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)