/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_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:08:11,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:08:11,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:08:11,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:08:11,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:08:11,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:08:11,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:08:11,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:08:11,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:08:11,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:08:11,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:08:11,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:08:11,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:08:11,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:08:11,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:08:11,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:08:11,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:08:11,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:08:11,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:08:11,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:08:11,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:08:11,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:08:11,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:08:11,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:08:11,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:08:11,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:08:11,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:08:11,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:08:11,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:08:11,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:08:11,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:08:11,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:08:11,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:08:11,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:08:11,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:08:11,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:08:11,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:08:11,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:08:11,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:08:11,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:08:11,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:08:11,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:08:11,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:08:11,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:08:11,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:08:11,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:08:11,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:08:11,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:08:11,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:08:11,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:08:11,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:08:11,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:08:11,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:08:11,273 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:08:11,273 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:08:11,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:08:11,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:08:11,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:08:11,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:08:11,438 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:08:11,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2022-01-11 00:08:11,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c954d6e7/40a9a904202344f6b31b9e0b0a6643ae/FLAG6b182191b [2022-01-11 00:08:11,883 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:08:11,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2022-01-11 00:08:11,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c954d6e7/40a9a904202344f6b31b9e0b0a6643ae/FLAG6b182191b [2022-01-11 00:08:11,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c954d6e7/40a9a904202344f6b31b9e0b0a6643ae [2022-01-11 00:08:11,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:08:11,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:08:11,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:08:11,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:08:11,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:08:11,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:08:11" (1/1) ... [2022-01-11 00:08:11,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc01a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:11, skipping insertion in model container [2022-01-11 00:08:11,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:08:11" (1/1) ... [2022-01-11 00:08:11,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:08:11,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:08:12,106 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_product56.cil.c[8146,8159] [2022-01-11 00:08:12,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:08:12,162 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 00:08:12,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:08:12,204 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_product56.cil.c[8146,8159] [2022-01-11 00:08:12,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:08:12,244 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:08:12,268 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_product56.cil.c[8146,8159] [2022-01-11 00:08:12,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:08:12,313 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:08:12,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12 WrapperNode [2022-01-11 00:08:12,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:08:12,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:08:12,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:08:12,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:08:12,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,382 INFO L137 Inliner]: procedures = 62, calls = 164, calls flagged for inlining = 61, calls inlined = 147, statements flattened = 1051 [2022-01-11 00:08:12,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:08:12,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:08:12,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:08:12,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:08:12,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:08:12,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:08:12,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:08:12,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:08:12,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (1/1) ... [2022-01-11 00:08:12,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:08:12,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:08:12,476 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 00:08:12,479 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 00:08:12,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:08:12,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:08:12,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:08:12,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:08:12,565 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:08:12,567 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:08:13,161 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:08:13,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:08:13,168 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 00:08:13,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:08:13 BoogieIcfgContainer [2022-01-11 00:08:13,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:08:13,171 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:08:13,171 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:08:13,176 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:08:13,178 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:08:13" (1/1) ... [2022-01-11 00:08:13,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:08:13 BasicIcfg [2022-01-11 00:08:13,336 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:08:13,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:08:13,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:08:13,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:08:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:08:11" (1/4) ... [2022-01-11 00:08:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42321b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:08:13, skipping insertion in model container [2022-01-11 00:08:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:08:12" (2/4) ... [2022-01-11 00:08:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42321b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:08:13, skipping insertion in model container [2022-01-11 00:08:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:08:13" (3/4) ... [2022-01-11 00:08:13,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42321b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:08:13, skipping insertion in model container [2022-01-11 00:08:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:08:13" (4/4) ... [2022-01-11 00:08:13,341 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.cTransformedIcfg [2022-01-11 00:08:13,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:08:13,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 00:08:13,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:08:13,397 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 00:08:13,397 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 00:08:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 284 states have (on average 1.3767605633802817) internal successors, (391), 287 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 00:08:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 00:08:13,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:13,421 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 00:08:13,422 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 00:08:13,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:13,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1020991754, now seen corresponding path program 1 times [2022-01-11 00:08:13,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153539837] [2022-01-11 00:08:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:13,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:13,636 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 00:08:13,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:13,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153539837] [2022-01-11 00:08:13,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153539837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:13,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:13,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:08:13,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179315052] [2022-01-11 00:08:13,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:13,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:08:13,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:08:13,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:08:13,667 INFO L87 Difference]: Start difference. First operand has 288 states, 284 states have (on average 1.3767605633802817) internal successors, (391), 287 states have internal predecessors, (391), 0 states have call successors, (0), 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 00:08:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:13,718 INFO L93 Difference]: Finished difference Result 565 states and 770 transitions. [2022-01-11 00:08:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:08:13,720 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 00:08:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:13,735 INFO L225 Difference]: With dead ends: 565 [2022-01-11 00:08:13,736 INFO L226 Difference]: Without dead ends: 278 [2022-01-11 00:08:13,739 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 00:08:13,741 INFO L933 BasicCegarLoop]: 381 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, 381 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 00:08:13,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:08:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-11 00:08:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-01-11 00:08:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 275 states have (on average 1.3563636363636364) internal successors, (373), 277 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 00:08:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 373 transitions. [2022-01-11 00:08:13,784 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 373 transitions. Word has length 21 [2022-01-11 00:08:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:13,785 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 373 transitions. [2022-01-11 00:08:13,785 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 00:08:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 373 transitions. [2022-01-11 00:08:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 00:08:13,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:13,786 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 00:08:13,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:08:13,786 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 00:08:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1514155654, now seen corresponding path program 1 times [2022-01-11 00:08:13,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:13,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867730141] [2022-01-11 00:08:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:13,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:13,872 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 00:08:13,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:13,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867730141] [2022-01-11 00:08:13,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867730141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:13,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:13,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:08:13,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414613169] [2022-01-11 00:08:13,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:13,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:08:13,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:13,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:08:13,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:08:13,875 INFO L87 Difference]: Start difference. First operand 278 states and 373 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 00:08:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:13,925 INFO L93 Difference]: Finished difference Result 618 states and 831 transitions. [2022-01-11 00:08:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:08:13,925 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 00:08:13,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:13,927 INFO L225 Difference]: With dead ends: 618 [2022-01-11 00:08:13,927 INFO L226 Difference]: Without dead ends: 348 [2022-01-11 00:08:13,928 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 00:08:13,929 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 353 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:13,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 468 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:08:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-11 00:08:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 339. [2022-01-11 00:08:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 336 states have (on average 1.3571428571428572) internal successors, (456), 338 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 00:08:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 456 transitions. [2022-01-11 00:08:13,962 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 456 transitions. Word has length 22 [2022-01-11 00:08:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:13,963 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 456 transitions. [2022-01-11 00:08:13,963 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 00:08:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 456 transitions. [2022-01-11 00:08:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-11 00:08:13,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:13,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:13,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:08:13,965 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 00:08:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1248441536, now seen corresponding path program 1 times [2022-01-11 00:08:13,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:13,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911149716] [2022-01-11 00:08:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:13,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:14,024 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 00:08:14,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911149716] [2022-01-11 00:08:14,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911149716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:14,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:14,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:08:14,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764228709] [2022-01-11 00:08:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:14,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:08:14,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:08:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:08:14,028 INFO L87 Difference]: Start difference. First operand 339 states and 456 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:14,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:14,163 INFO L93 Difference]: Finished difference Result 691 states and 924 transitions. [2022-01-11 00:08:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:08:14,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-11 00:08:14,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:14,165 INFO L225 Difference]: With dead ends: 691 [2022-01-11 00:08:14,165 INFO L226 Difference]: Without dead ends: 360 [2022-01-11 00:08:14,167 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 00:08:14,168 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 191 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:14,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 432 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:08:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-11 00:08:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 354. [2022-01-11 00:08:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 351 states have (on average 1.2934472934472934) internal successors, (454), 353 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 00:08:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 454 transitions. [2022-01-11 00:08:14,191 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 454 transitions. Word has length 28 [2022-01-11 00:08:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:14,191 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 454 transitions. [2022-01-11 00:08:14,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 454 transitions. [2022-01-11 00:08:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-11 00:08:14,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:14,192 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] [2022-01-11 00:08:14,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:08:14,193 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:08:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1187880530, now seen corresponding path program 1 times [2022-01-11 00:08:14,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:14,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349123361] [2022-01-11 00:08:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:14,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:14,298 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 00:08:14,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:14,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349123361] [2022-01-11 00:08:14,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349123361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:14,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:14,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:08:14,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425407188] [2022-01-11 00:08:14,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:14,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:08:14,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:14,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:08:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:08:14,301 INFO L87 Difference]: Start difference. First operand 354 states and 454 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:08:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:14,597 INFO L93 Difference]: Finished difference Result 1182 states and 1491 transitions. [2022-01-11 00:08:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:08:14,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-01-11 00:08:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:14,600 INFO L225 Difference]: With dead ends: 1182 [2022-01-11 00:08:14,600 INFO L226 Difference]: Without dead ends: 836 [2022-01-11 00:08:14,601 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 00:08:14,602 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 695 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:14,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1700 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:08:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-01-11 00:08:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 348. [2022-01-11 00:08:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 345 states have (on average 1.263768115942029) internal successors, (436), 347 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 436 transitions. [2022-01-11 00:08:14,630 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 436 transitions. Word has length 32 [2022-01-11 00:08:14,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:14,631 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 436 transitions. [2022-01-11 00:08:14,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:08:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 436 transitions. [2022-01-11 00:08:14,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 00:08:14,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:14,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:14,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:08:14,632 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 00:08:14,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash 146699198, now seen corresponding path program 1 times [2022-01-11 00:08:14,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:14,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717469820] [2022-01-11 00:08:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:14,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:14,710 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 00:08:14,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:14,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717469820] [2022-01-11 00:08:14,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717469820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:14,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:14,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:08:14,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214477918] [2022-01-11 00:08:14,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:14,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:08:14,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:08:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:08:14,713 INFO L87 Difference]: Start difference. First operand 348 states and 436 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:14,856 INFO L93 Difference]: Finished difference Result 979 states and 1210 transitions. [2022-01-11 00:08:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:08:14,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-11 00:08:14,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:14,859 INFO L225 Difference]: With dead ends: 979 [2022-01-11 00:08:14,859 INFO L226 Difference]: Without dead ends: 639 [2022-01-11 00:08:14,860 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 00:08:14,860 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 453 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:14,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1272 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:08:14,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-01-11 00:08:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 375. [2022-01-11 00:08:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 372 states have (on average 1.2446236559139785) internal successors, (463), 374 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 00:08:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 463 transitions. [2022-01-11 00:08:14,905 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 463 transitions. Word has length 35 [2022-01-11 00:08:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:14,908 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 463 transitions. [2022-01-11 00:08:14,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 463 transitions. [2022-01-11 00:08:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 00:08:14,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:14,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:14,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:08:14,913 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 00:08:14,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:14,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1654251007, now seen corresponding path program 1 times [2022-01-11 00:08:14,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:14,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343680216] [2022-01-11 00:08:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:14,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:14,975 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 00:08:14,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:14,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343680216] [2022-01-11 00:08:14,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343680216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:14,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:14,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:08:14,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618111557] [2022-01-11 00:08:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:14,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:08:14,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:08:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:08:14,977 INFO L87 Difference]: Start difference. First operand 375 states and 463 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:15,107 INFO L93 Difference]: Finished difference Result 1075 states and 1306 transitions. [2022-01-11 00:08:15,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:08:15,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-11 00:08:15,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:15,111 INFO L225 Difference]: With dead ends: 1075 [2022-01-11 00:08:15,111 INFO L226 Difference]: Without dead ends: 708 [2022-01-11 00:08:15,112 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 00:08:15,116 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 408 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:15,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 918 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:08:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-01-11 00:08:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 393. [2022-01-11 00:08:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 390 states have (on average 1.2333333333333334) internal successors, (481), 392 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 00:08:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 481 transitions. [2022-01-11 00:08:15,151 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 481 transitions. Word has length 35 [2022-01-11 00:08:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:15,153 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 481 transitions. [2022-01-11 00:08:15,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 481 transitions. [2022-01-11 00:08:15,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 00:08:15,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:15,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:15,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:08:15,156 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 00:08:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1287406592, now seen corresponding path program 1 times [2022-01-11 00:08:15,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322787541] [2022-01-11 00:08:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:15,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:15,207 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 00:08:15,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:15,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322787541] [2022-01-11 00:08:15,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322787541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:15,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:15,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:08:15,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818958554] [2022-01-11 00:08:15,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:15,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:08:15,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:08:15,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:08:15,209 INFO L87 Difference]: Start difference. First operand 393 states and 481 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:15,222 INFO L93 Difference]: Finished difference Result 393 states and 481 transitions. [2022-01-11 00:08:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:08:15,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-11 00:08:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:15,223 INFO L225 Difference]: With dead ends: 393 [2022-01-11 00:08:15,223 INFO L226 Difference]: Without dead ends: 164 [2022-01-11 00:08:15,224 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 00:08:15,227 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:15,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 123 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:08:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-11 00:08:15,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-01-11 00:08:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2576687116564418) internal successors, (205), 163 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 00:08:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 205 transitions. [2022-01-11 00:08:15,242 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 205 transitions. Word has length 35 [2022-01-11 00:08:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:15,242 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 205 transitions. [2022-01-11 00:08:15,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 205 transitions. [2022-01-11 00:08:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 00:08:15,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:15,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:15,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:08:15,244 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 00:08:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 370301329, now seen corresponding path program 1 times [2022-01-11 00:08:15,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:15,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008034679] [2022-01-11 00:08:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:15,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:15,321 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 00:08:15,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:15,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008034679] [2022-01-11 00:08:15,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008034679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:15,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:15,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:08:15,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736951776] [2022-01-11 00:08:15,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:15,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:08:15,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:15,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:08:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:08:15,323 INFO L87 Difference]: Start difference. First operand 164 states and 205 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:15,358 INFO L93 Difference]: Finished difference Result 385 states and 483 transitions. [2022-01-11 00:08:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:08:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-11 00:08:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:15,359 INFO L225 Difference]: With dead ends: 385 [2022-01-11 00:08:15,359 INFO L226 Difference]: Without dead ends: 229 [2022-01-11 00:08:15,360 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 00:08:15,360 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 30 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:15,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 211 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:08:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-11 00:08:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-01-11 00:08:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.2412280701754386) internal successors, (283), 228 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 00:08:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 283 transitions. [2022-01-11 00:08:15,377 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 283 transitions. Word has length 42 [2022-01-11 00:08:15,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:15,378 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 283 transitions. [2022-01-11 00:08:15,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 283 transitions. [2022-01-11 00:08:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 00:08:15,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:15,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:15,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:08:15,379 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:08:15,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash -991015433, now seen corresponding path program 1 times [2022-01-11 00:08:15,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:15,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797863190] [2022-01-11 00:08:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:15,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:15,469 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 00:08:15,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:15,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797863190] [2022-01-11 00:08:15,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797863190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:15,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:15,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:08:15,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658119231] [2022-01-11 00:08:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:15,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:08:15,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:08:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:08:15,471 INFO L87 Difference]: Start difference. First operand 229 states and 283 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:15,651 INFO L93 Difference]: Finished difference Result 1117 states and 1401 transitions. [2022-01-11 00:08:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 00:08:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-11 00:08:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:15,654 INFO L225 Difference]: With dead ends: 1117 [2022-01-11 00:08:15,654 INFO L226 Difference]: Without dead ends: 961 [2022-01-11 00:08:15,655 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 00:08:15,655 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 577 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:15,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 965 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:08:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-01-11 00:08:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 390. [2022-01-11 00:08:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.2339331619537275) internal successors, (480), 389 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 00:08:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 480 transitions. [2022-01-11 00:08:15,687 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 480 transitions. Word has length 44 [2022-01-11 00:08:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:15,688 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 480 transitions. [2022-01-11 00:08:15,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 480 transitions. [2022-01-11 00:08:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:08:15,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:15,688 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:15,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:08:15,689 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 00:08:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1096851328, now seen corresponding path program 1 times [2022-01-11 00:08:15,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:15,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797184933] [2022-01-11 00:08:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:15,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:08:15,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:15,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797184933] [2022-01-11 00:08:15,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797184933] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:08:15,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264269244] [2022-01-11 00:08:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:15,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:08:15,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:08:15,743 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 00:08:15,744 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 00:08:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:15,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-11 00:08:15,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:08:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:08:16,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:08:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:08:16,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264269244] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:08:16,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:08:16,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-11 00:08:16,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766101978] [2022-01-11 00:08:16,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:08:16,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:08:16,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:16,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:08:16,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:08:16,135 INFO L87 Difference]: Start difference. First operand 390 states and 480 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:16,225 INFO L93 Difference]: Finished difference Result 915 states and 1143 transitions. [2022-01-11 00:08:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 00:08:16,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 00:08:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:16,228 INFO L225 Difference]: With dead ends: 915 [2022-01-11 00:08:16,228 INFO L226 Difference]: Without dead ends: 533 [2022-01-11 00:08:16,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:08:16,229 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 245 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:16,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 494 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:08:16,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-11 00:08:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 350. [2022-01-11 00:08:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.2120343839541547) internal successors, (423), 349 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 00:08:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 423 transitions. [2022-01-11 00:08:16,257 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 423 transitions. Word has length 80 [2022-01-11 00:08:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:16,257 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 423 transitions. [2022-01-11 00:08:16,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 423 transitions. [2022-01-11 00:08:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-11 00:08:16,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:16,258 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:16,279 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 00:08:16,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-11 00:08:16,480 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 00:08:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:16,480 INFO L85 PathProgramCache]: Analyzing trace with hash -531394560, now seen corresponding path program 1 times [2022-01-11 00:08:16,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:16,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28651771] [2022-01-11 00:08:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:16,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 76 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 00:08:16,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:16,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28651771] [2022-01-11 00:08:16,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28651771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:08:16,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850655556] [2022-01-11 00:08:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:16,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:08:16,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:08:16,600 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 00:08:16,602 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 00:08:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:16,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 00:08:16,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:08:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 00:08:16,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:08:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 00:08:17,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850655556] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:08:17,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:08:17,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-11 00:08:17,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108682740] [2022-01-11 00:08:17,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:08:17,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 00:08:17,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 00:08:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:08:17,276 INFO L87 Difference]: Start difference. First operand 350 states and 423 transitions. Second operand has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:18,556 INFO L93 Difference]: Finished difference Result 4472 states and 5474 transitions. [2022-01-11 00:08:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-11 00:08:18,557 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-01-11 00:08:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:18,567 INFO L225 Difference]: With dead ends: 4472 [2022-01-11 00:08:18,567 INFO L226 Difference]: Without dead ends: 3765 [2022-01-11 00:08:18,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=881, Invalid=3811, Unknown=0, NotChecked=0, Total=4692 [2022-01-11 00:08:18,570 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 2357 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2357 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:18,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2357 Valid, 2029 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:08:18,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2022-01-11 00:08:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 894. [2022-01-11 00:08:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1914893617021276) internal successors, (1064), 893 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:08:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1064 transitions. [2022-01-11 00:08:18,673 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1064 transitions. Word has length 139 [2022-01-11 00:08:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:18,673 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1064 transitions. [2022-01-11 00:08:18,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1064 transitions. [2022-01-11 00:08:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 00:08:18,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:18,675 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:18,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 00:08:18,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 00:08:18,896 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 00:08:18,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -470038324, now seen corresponding path program 1 times [2022-01-11 00:08:18,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:18,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748106222] [2022-01-11 00:08:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:18,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-11 00:08:18,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:18,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748106222] [2022-01-11 00:08:18,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748106222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:18,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:18,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:08:18,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299870665] [2022-01-11 00:08:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:18,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:08:18,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:08:18,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:08:18,970 INFO L87 Difference]: Start difference. First operand 894 states and 1064 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 00:08:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:19,188 INFO L93 Difference]: Finished difference Result 2801 states and 3341 transitions. [2022-01-11 00:08:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 00:08:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 00:08:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:19,194 INFO L225 Difference]: With dead ends: 2801 [2022-01-11 00:08:19,194 INFO L226 Difference]: Without dead ends: 1915 [2022-01-11 00:08:19,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:08:19,195 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 503 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:19,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 848 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:08:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2022-01-11 00:08:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 835. [2022-01-11 00:08:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.1738609112709832) internal successors, (979), 834 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 00:08:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 979 transitions. [2022-01-11 00:08:19,276 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 979 transitions. Word has length 143 [2022-01-11 00:08:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:19,276 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 979 transitions. [2022-01-11 00:08:19,276 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 00:08:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 979 transitions. [2022-01-11 00:08:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 00:08:19,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:19,278 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:19,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:08:19,278 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 00:08:19,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:19,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2037820532, now seen corresponding path program 2 times [2022-01-11 00:08:19,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:19,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608957749] [2022-01-11 00:08:19,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:19,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 00:08:19,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608957749] [2022-01-11 00:08:19,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608957749] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:08:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198259173] [2022-01-11 00:08:19,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:08:19,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:08:19,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:08:19,392 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 00:08:19,393 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 00:08:19,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:08:19,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:08:19,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 00:08:19,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:08:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-11 00:08:19,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 00:08:19,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198259173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:19,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 00:08:19,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-01-11 00:08:19,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431002864] [2022-01-11 00:08:19,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:19,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:08:19,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:19,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:08:19,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:08:19,788 INFO L87 Difference]: Start difference. First operand 835 states and 979 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:20,218 INFO L93 Difference]: Finished difference Result 2565 states and 3016 transitions. [2022-01-11 00:08:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:08:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 00:08:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:20,224 INFO L225 Difference]: With dead ends: 2565 [2022-01-11 00:08:20,224 INFO L226 Difference]: Without dead ends: 2101 [2022-01-11 00:08:20,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:08:20,225 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 588 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:20,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 887 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:08:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2022-01-11 00:08:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1060. [2022-01-11 00:08:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.166194523135033) internal successors, (1235), 1059 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states 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 00:08:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1235 transitions. [2022-01-11 00:08:20,333 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1235 transitions. Word has length 143 [2022-01-11 00:08:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:20,334 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1235 transitions. [2022-01-11 00:08:20,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1235 transitions. [2022-01-11 00:08:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 00:08:20,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:08:20,336 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:08:20,370 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 00:08:20,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:08:20,558 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 00:08:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:08:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1917700659, now seen corresponding path program 1 times [2022-01-11 00:08:20,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:08:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754924308] [2022-01-11 00:08:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:08:20,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:08:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:08:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-11 00:08:20,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:08:20,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754924308] [2022-01-11 00:08:20,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754924308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:08:20,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:08:20,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:08:20,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184744290] [2022-01-11 00:08:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:08:20,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:08:20,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:08:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:08:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:08:20,603 INFO L87 Difference]: Start difference. First operand 1060 states and 1235 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:08:20,740 INFO L93 Difference]: Finished difference Result 2112 states and 2451 transitions. [2022-01-11 00:08:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:08:20,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 00:08:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:08:20,741 INFO L225 Difference]: With dead ends: 2112 [2022-01-11 00:08:20,741 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 00:08:20,743 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 00:08:20,744 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 257 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:08:20,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 588 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:08:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 00:08:20,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 00:08:20,744 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 00:08:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 00:08:20,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2022-01-11 00:08:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:08:20,745 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 00:08:20,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:08:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 00:08:20,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 00:08:20,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 00:08:20,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 00:08:20,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 00:08:20,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:08:20,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 00:08:53,976 WARN L228 SmtUtils]: Spent 33.22s on a formula simplification. DAG size of input: 347 DAG size of output: 345 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 00:09:17,022 WARN L228 SmtUtils]: Spent 21.38s on a formula simplification. DAG size of input: 187 DAG size of output: 160 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)