/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:09:32,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:09:32,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:09:32,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:09:32,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:09:32,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:09:32,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:09:32,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:09:32,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:09:32,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:09:32,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:09:32,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:09:32,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:09:32,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:09:32,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:09:32,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:09:32,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:09:32,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:09:32,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:09:32,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:09:32,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:09:32,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:09:32,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:09:32,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:09:32,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:09:32,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:09:32,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:09:32,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:09:32,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:09:32,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:09:32,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:09:32,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:09:32,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:09:32,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:09:32,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:09:32,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:09:32,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:09:32,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:09:32,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:09:32,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:09:32,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:09:32,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:09:32,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:09:32,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:09:32,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:09:32,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:09:32,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:09:32,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:09:32,429 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:09:32,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:09:32,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:09:32,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:09:32,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:09:32,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:09:32,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:09:32,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:09:32,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:09:32,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:09:32,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:09:32,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:09:32,432 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:09:32,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:09:32,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:09:32,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:09:32,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:09:32,433 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:09:32,433 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:09:32,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:09:32,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:09:32,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:09:32,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:09:32,706 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:09:32,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c [2022-01-10 18:09:32,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca6e3000/ef55cc19868b4762a273c6dcf0e0f9d9/FLAG0840d34b5 [2022-01-10 18:09:33,249 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:09:33,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c [2022-01-10 18:09:33,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca6e3000/ef55cc19868b4762a273c6dcf0e0f9d9/FLAG0840d34b5 [2022-01-10 18:09:33,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca6e3000/ef55cc19868b4762a273c6dcf0e0f9d9 [2022-01-10 18:09:33,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:09:33,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:09:33,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:09:33,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:09:33,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:09:33,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:09:33" (1/1) ... [2022-01-10 18:09:33,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c4203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:33, skipping insertion in model container [2022-01-10 18:09:33,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:09:33" (1/1) ... [2022-01-10 18:09:33,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:09:33,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:09:34,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c[16949,16962] [2022-01-10 18:09:34,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:09:34,428 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:09:34,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:09:34,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c[16949,16962] [2022-01-10 18:09:34,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:09:34,531 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:09:34,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product29.cil.c[16949,16962] [2022-01-10 18:09:34,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:09:34,648 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:09:34,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34 WrapperNode [2022-01-10 18:09:34,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:09:34,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:09:34,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:09:34,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:09:34,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,808 INFO L137 Inliner]: procedures = 133, calls = 224, calls flagged for inlining = 135, calls inlined = 308, statements flattened = 4777 [2022-01-10 18:09:34,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:09:34,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:09:34,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:09:34,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:09:34,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:09:34,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:09:34,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:09:34,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:09:34,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (1/1) ... [2022-01-10 18:09:34,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:09:34,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:09:34,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:09:34,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:09:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:09:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:09:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:09:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:09:35,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:09:35,266 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:09:35,267 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:09:37,032 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:09:37,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:09:37,044 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:09:37,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:09:37 BoogieIcfgContainer [2022-01-10 18:09:37,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:09:37,047 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:09:37,047 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:09:37,048 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:09:37,050 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:09:37" (1/1) ... [2022-01-10 18:09:37,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:09:37 BasicIcfg [2022-01-10 18:09:37,366 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:09:37,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:09:37,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:09:37,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:09:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:09:33" (1/4) ... [2022-01-10 18:09:37,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b411b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:09:37, skipping insertion in model container [2022-01-10 18:09:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:34" (2/4) ... [2022-01-10 18:09:37,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b411b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:09:37, skipping insertion in model container [2022-01-10 18:09:37,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:09:37" (3/4) ... [2022-01-10 18:09:37,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b411b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:09:37, skipping insertion in model container [2022-01-10 18:09:37,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:09:37" (4/4) ... [2022-01-10 18:09:37,373 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product29.cil.cTransformedIcfg [2022-01-10 18:09:37,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:09:37,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:09:37,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:09:37,428 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:09:37,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:09:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 1081 states, 1074 states have (on average 1.6927374301675977) internal successors, (1818), 1080 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:09:37,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:37,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:37,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1835508635, now seen corresponding path program 1 times [2022-01-10 18:09:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:37,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091654365] [2022-01-10 18:09:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:37,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:37,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:37,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091654365] [2022-01-10 18:09:37,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091654365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:37,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:37,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:09:37,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659172630] [2022-01-10 18:09:37,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:37,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:09:37,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:09:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:09:37,905 INFO L87 Difference]: Start difference. First operand has 1081 states, 1074 states have (on average 1.6927374301675977) internal successors, (1818), 1080 states have internal predecessors, (1818), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:37,971 INFO L93 Difference]: Finished difference Result 1858 states and 3097 transitions. [2022-01-10 18:09:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:09:37,973 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 18:09:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:37,988 INFO L225 Difference]: With dead ends: 1858 [2022-01-10 18:09:37,988 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 18:09:37,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:09:38,000 INFO L933 BasicCegarLoop]: 1804 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, 1804 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:38,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 18:09:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2022-01-10 18:09:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.7003089598352215) internal successors, (1651), 976 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1651 transitions. [2022-01-10 18:09:38,082 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1651 transitions. Word has length 62 [2022-01-10 18:09:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:38,082 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1651 transitions. [2022-01-10 18:09:38,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1651 transitions. [2022-01-10 18:09:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:09:38,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:38,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:38,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:09:38,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:38,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -795802747, now seen corresponding path program 1 times [2022-01-10 18:09:38,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:38,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706368150] [2022-01-10 18:09:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:38,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:38,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:38,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706368150] [2022-01-10 18:09:38,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706368150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:38,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:38,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:09:38,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466400892] [2022-01-10 18:09:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:38,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:09:38,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:09:38,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:09:38,258 INFO L87 Difference]: Start difference. First operand 977 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:38,347 INFO L93 Difference]: Finished difference Result 1935 states and 3274 transitions. [2022-01-10 18:09:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:09:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:09:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:38,351 INFO L225 Difference]: With dead ends: 1935 [2022-01-10 18:09:38,351 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 18:09:38,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:09:38,354 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1626 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:38,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1626 Valid, 1644 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 18:09:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2022-01-10 18:09:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.698249227600412) internal successors, (1649), 976 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1649 transitions. [2022-01-10 18:09:38,392 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1649 transitions. Word has length 63 [2022-01-10 18:09:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:38,393 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1649 transitions. [2022-01-10 18:09:38,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1649 transitions. [2022-01-10 18:09:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:09:38,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:38,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:38,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:09:38,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:38,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1577968837, now seen corresponding path program 1 times [2022-01-10 18:09:38,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:38,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170177494] [2022-01-10 18:09:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:38,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:38,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:38,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170177494] [2022-01-10 18:09:38,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170177494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:38,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:38,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:38,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993182384] [2022-01-10 18:09:38,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:38,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:38,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:38,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:38,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:38,538 INFO L87 Difference]: Start difference. First operand 977 states and 1649 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:38,825 INFO L93 Difference]: Finished difference Result 4753 states and 8041 transitions. [2022-01-10 18:09:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:09:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:09:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:38,839 INFO L225 Difference]: With dead ends: 4753 [2022-01-10 18:09:38,839 INFO L226 Difference]: Without dead ends: 3800 [2022-01-10 18:09:38,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:09:38,848 INFO L933 BasicCegarLoop]: 3221 mSDtfsCounter, 8028 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8028 SdHoareTripleChecker+Valid, 8040 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:38,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8028 Valid, 8040 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-01-10 18:09:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 977. [2022-01-10 18:09:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.6972193614830071) internal successors, (1648), 976 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1648 transitions. [2022-01-10 18:09:38,903 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1648 transitions. Word has length 65 [2022-01-10 18:09:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:38,904 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1648 transitions. [2022-01-10 18:09:38,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1648 transitions. [2022-01-10 18:09:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:09:38,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:38,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:38,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:09:38,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash 356168907, now seen corresponding path program 1 times [2022-01-10 18:09:38,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:38,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106327913] [2022-01-10 18:09:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:38,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:39,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:39,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106327913] [2022-01-10 18:09:39,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106327913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:39,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:39,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:09:39,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794135974] [2022-01-10 18:09:39,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:39,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:09:39,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:09:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:09:39,021 INFO L87 Difference]: Start difference. First operand 977 states and 1648 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:39,077 INFO L93 Difference]: Finished difference Result 1939 states and 3274 transitions. [2022-01-10 18:09:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:09:39,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 18:09:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:39,082 INFO L225 Difference]: With dead ends: 1939 [2022-01-10 18:09:39,082 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 18:09:39,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:09:39,090 INFO L933 BasicCegarLoop]: 1662 mSDtfsCounter, 1627 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:39,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 1684 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 18:09:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 977. [2022-01-10 18:09:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.6961894953656025) internal successors, (1647), 976 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1647 transitions. [2022-01-10 18:09:39,163 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1647 transitions. Word has length 66 [2022-01-10 18:09:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:39,164 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1647 transitions. [2022-01-10 18:09:39,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1647 transitions. [2022-01-10 18:09:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:09:39,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:39,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:39,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:09:39,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash -771353498, now seen corresponding path program 1 times [2022-01-10 18:09:39,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:39,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365499522] [2022-01-10 18:09:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:39,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:39,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:39,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365499522] [2022-01-10 18:09:39,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365499522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:39,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:39,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:39,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946462329] [2022-01-10 18:09:39,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:39,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:39,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:39,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:39,282 INFO L87 Difference]: Start difference. First operand 977 states and 1647 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:39,488 INFO L93 Difference]: Finished difference Result 2865 states and 4841 transitions. [2022-01-10 18:09:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:09:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:09:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:39,495 INFO L225 Difference]: With dead ends: 2865 [2022-01-10 18:09:39,495 INFO L226 Difference]: Without dead ends: 1922 [2022-01-10 18:09:39,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:09:39,497 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 7951 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7951 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:39,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7951 Valid, 3326 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2022-01-10 18:09:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 977. [2022-01-10 18:09:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 971 states have (on average 1.694129763130793) internal successors, (1645), 976 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1645 transitions. [2022-01-10 18:09:39,558 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1645 transitions. Word has length 67 [2022-01-10 18:09:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:39,558 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1645 transitions. [2022-01-10 18:09:39,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1645 transitions. [2022-01-10 18:09:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:09:39,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:39,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:39,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:09:39,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2085095363, now seen corresponding path program 1 times [2022-01-10 18:09:39,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:39,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968071820] [2022-01-10 18:09:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:39,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:39,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:39,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968071820] [2022-01-10 18:09:39,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968071820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:39,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:39,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:09:39,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467681529] [2022-01-10 18:09:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:39,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:09:39,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:09:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:09:39,703 INFO L87 Difference]: Start difference. First operand 977 states and 1645 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:40,921 INFO L93 Difference]: Finished difference Result 5068 states and 8333 transitions. [2022-01-10 18:09:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:09:40,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:09:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:40,936 INFO L225 Difference]: With dead ends: 5068 [2022-01-10 18:09:40,936 INFO L226 Difference]: Without dead ends: 4458 [2022-01-10 18:09:40,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:09:40,939 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 12083 mSDsluCounter, 14497 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12083 SdHoareTripleChecker+Valid, 17096 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:40,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12083 Valid, 17096 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 18:09:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2022-01-10 18:09:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 1802. [2022-01-10 18:09:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1796 states have (on average 1.7010022271714922) internal successors, (3055), 1801 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3055 transitions. [2022-01-10 18:09:41,042 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3055 transitions. Word has length 69 [2022-01-10 18:09:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:41,042 INFO L470 AbstractCegarLoop]: Abstraction has 1802 states and 3055 transitions. [2022-01-10 18:09:41,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3055 transitions. [2022-01-10 18:09:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:09:41,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:41,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:41,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:09:41,045 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2043794367, now seen corresponding path program 1 times [2022-01-10 18:09:41,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:41,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039599331] [2022-01-10 18:09:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:41,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:41,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:41,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039599331] [2022-01-10 18:09:41,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039599331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:41,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:41,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:09:41,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011661198] [2022-01-10 18:09:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:41,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:41,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:41,202 INFO L87 Difference]: Start difference. First operand 1802 states and 3055 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:41,843 INFO L93 Difference]: Finished difference Result 6333 states and 10462 transitions. [2022-01-10 18:09:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:09:41,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 18:09:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:41,856 INFO L225 Difference]: With dead ends: 6333 [2022-01-10 18:09:41,856 INFO L226 Difference]: Without dead ends: 5233 [2022-01-10 18:09:41,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:09:41,859 INFO L933 BasicCegarLoop]: 2333 mSDtfsCounter, 4686 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 7169 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:41,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 7169 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:09:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-01-10 18:09:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 3179. [2022-01-10 18:09:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3173 states have (on average 1.6924046643554995) internal successors, (5370), 3178 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5370 transitions. [2022-01-10 18:09:42,040 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5370 transitions. Word has length 70 [2022-01-10 18:09:42,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:42,040 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 5370 transitions. [2022-01-10 18:09:42,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5370 transitions. [2022-01-10 18:09:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:09:42,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:42,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:42,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:09:42,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:42,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1634970142, now seen corresponding path program 1 times [2022-01-10 18:09:42,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:42,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470738014] [2022-01-10 18:09:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:42,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:42,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:42,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470738014] [2022-01-10 18:09:42,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470738014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:42,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:42,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:09:42,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534796817] [2022-01-10 18:09:42,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:42,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:09:42,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:09:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:09:42,121 INFO L87 Difference]: Start difference. First operand 3179 states and 5370 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:43,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:43,887 INFO L93 Difference]: Finished difference Result 25632 states and 42574 transitions. [2022-01-10 18:09:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:09:43,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 18:09:43,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:43,953 INFO L225 Difference]: With dead ends: 25632 [2022-01-10 18:09:43,953 INFO L226 Difference]: Without dead ends: 23342 [2022-01-10 18:09:43,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:43,965 INFO L933 BasicCegarLoop]: 3135 mSDtfsCounter, 13176 mSDsluCounter, 11101 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13176 SdHoareTripleChecker+Valid, 14236 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:43,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13176 Valid, 14236 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:09:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23342 states. [2022-01-10 18:09:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23342 to 5560. [2022-01-10 18:09:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5554 states have (on average 1.693194094346417) internal successors, (9404), 5559 states have internal predecessors, (9404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 9404 transitions. [2022-01-10 18:09:44,558 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 9404 transitions. Word has length 70 [2022-01-10 18:09:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:44,558 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 9404 transitions. [2022-01-10 18:09:44,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 9404 transitions. [2022-01-10 18:09:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:09:44,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:44,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:44,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:09:44,563 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:44,564 INFO L85 PathProgramCache]: Analyzing trace with hash -857814010, now seen corresponding path program 1 times [2022-01-10 18:09:44,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:44,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932168283] [2022-01-10 18:09:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:44,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:44,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:44,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932168283] [2022-01-10 18:09:44,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932168283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:44,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:44,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:44,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285380518] [2022-01-10 18:09:44,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:44,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:44,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:44,661 INFO L87 Difference]: Start difference. First operand 5560 states and 9404 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:45,423 INFO L93 Difference]: Finished difference Result 12358 states and 20520 transitions. [2022-01-10 18:09:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:09:45,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:09:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:45,476 INFO L225 Difference]: With dead ends: 12358 [2022-01-10 18:09:45,476 INFO L226 Difference]: Without dead ends: 8506 [2022-01-10 18:09:45,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:09:45,504 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 5573 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5573 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:45,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5573 Valid, 3554 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2022-01-10 18:09:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 5560. [2022-01-10 18:09:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5554 states have (on average 1.6903132877205618) internal successors, (9388), 5559 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 9388 transitions. [2022-01-10 18:09:46,184 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 9388 transitions. Word has length 71 [2022-01-10 18:09:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:46,199 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 9388 transitions. [2022-01-10 18:09:46,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 9388 transitions. [2022-01-10 18:09:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:09:46,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:46,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:46,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:09:46,205 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1313503772, now seen corresponding path program 1 times [2022-01-10 18:09:46,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:46,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494671660] [2022-01-10 18:09:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:46,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:46,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:46,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494671660] [2022-01-10 18:09:46,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494671660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:46,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:46,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:46,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246353817] [2022-01-10 18:09:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:46,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:46,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:46,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:46,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:46,368 INFO L87 Difference]: Start difference. First operand 5560 states and 9388 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:47,668 INFO L93 Difference]: Finished difference Result 16505 states and 27905 transitions. [2022-01-10 18:09:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:09:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:09:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:47,725 INFO L225 Difference]: With dead ends: 16505 [2022-01-10 18:09:47,736 INFO L226 Difference]: Without dead ends: 10982 [2022-01-10 18:09:47,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:09:47,764 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 4866 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4866 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:47,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4866 Valid, 4785 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:09:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10982 states. [2022-01-10 18:09:48,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10982 to 5560. [2022-01-10 18:09:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5554 states have (on average 1.6899531868923299) internal successors, (9386), 5559 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 9386 transitions. [2022-01-10 18:09:48,675 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 9386 transitions. Word has length 71 [2022-01-10 18:09:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:48,675 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 9386 transitions. [2022-01-10 18:09:48,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 9386 transitions. [2022-01-10 18:09:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:09:48,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:48,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:48,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:09:48,681 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:48,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash 843920239, now seen corresponding path program 1 times [2022-01-10 18:09:48,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:48,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249575126] [2022-01-10 18:09:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:48,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:48,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:48,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249575126] [2022-01-10 18:09:48,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249575126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:48,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:48,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:09:48,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751272485] [2022-01-10 18:09:48,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:48,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:09:48,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:09:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:09:48,818 INFO L87 Difference]: Start difference. First operand 5560 states and 9386 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:51,140 INFO L93 Difference]: Finished difference Result 20064 states and 33600 transitions. [2022-01-10 18:09:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:09:51,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:09:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:51,174 INFO L225 Difference]: With dead ends: 20064 [2022-01-10 18:09:51,175 INFO L226 Difference]: Without dead ends: 18306 [2022-01-10 18:09:51,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:51,184 INFO L933 BasicCegarLoop]: 3635 mSDtfsCounter, 9779 mSDsluCounter, 11349 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9779 SdHoareTripleChecker+Valid, 14984 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:51,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9779 Valid, 14984 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:09:51,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18306 states. [2022-01-10 18:09:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18306 to 6326. [2022-01-10 18:09:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 6320 states have (on average 1.6857594936708862) internal successors, (10654), 6325 states have internal predecessors, (10654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 10654 transitions. [2022-01-10 18:09:51,845 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 10654 transitions. Word has length 72 [2022-01-10 18:09:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:51,845 INFO L470 AbstractCegarLoop]: Abstraction has 6326 states and 10654 transitions. [2022-01-10 18:09:51,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 10654 transitions. [2022-01-10 18:09:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:09:51,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:51,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:51,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:09:51,850 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash -433837086, now seen corresponding path program 1 times [2022-01-10 18:09:51,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:51,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019104412] [2022-01-10 18:09:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:51,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:51,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:51,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019104412] [2022-01-10 18:09:51,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019104412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:51,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:51,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:09:51,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16527439] [2022-01-10 18:09:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:51,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:09:51,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:09:51,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:09:51,984 INFO L87 Difference]: Start difference. First operand 6326 states and 10654 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:55,038 INFO L93 Difference]: Finished difference Result 21365 states and 35304 transitions. [2022-01-10 18:09:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:09:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:09:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:55,069 INFO L225 Difference]: With dead ends: 21365 [2022-01-10 18:09:55,069 INFO L226 Difference]: Without dead ends: 17921 [2022-01-10 18:09:55,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:09:55,078 INFO L933 BasicCegarLoop]: 3573 mSDtfsCounter, 9001 mSDsluCounter, 12892 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9001 SdHoareTripleChecker+Valid, 16465 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:55,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9001 Valid, 16465 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:09:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17921 states. [2022-01-10 18:09:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17921 to 7604. [2022-01-10 18:09:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 7598 states have (on average 1.6778099499868386) internal successors, (12748), 7603 states have internal predecessors, (12748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 12748 transitions. [2022-01-10 18:09:55,773 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 12748 transitions. Word has length 72 [2022-01-10 18:09:55,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:55,773 INFO L470 AbstractCegarLoop]: Abstraction has 7604 states and 12748 transitions. [2022-01-10 18:09:55,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:55,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 12748 transitions. [2022-01-10 18:09:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:09:55,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:55,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:55,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:09:55,778 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:55,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:55,778 INFO L85 PathProgramCache]: Analyzing trace with hash 679414412, now seen corresponding path program 1 times [2022-01-10 18:09:55,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:55,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443294578] [2022-01-10 18:09:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:55,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:55,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:55,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443294578] [2022-01-10 18:09:55,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443294578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:55,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:55,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:09:55,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449278680] [2022-01-10 18:09:55,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:55,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:09:55,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:09:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:09:55,859 INFO L87 Difference]: Start difference. First operand 7604 states and 12748 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:56,714 INFO L93 Difference]: Finished difference Result 12144 states and 20219 transitions. [2022-01-10 18:09:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:09:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:09:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:56,729 INFO L225 Difference]: With dead ends: 12144 [2022-01-10 18:09:56,729 INFO L226 Difference]: Without dead ends: 9738 [2022-01-10 18:09:56,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:56,735 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 3064 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:56,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3064 Valid, 3538 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2022-01-10 18:09:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 7604. [2022-01-10 18:09:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 7598 states have (on average 1.6772834956567517) internal successors, (12744), 7603 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 12744 transitions. [2022-01-10 18:09:57,374 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 12744 transitions. Word has length 72 [2022-01-10 18:09:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:57,374 INFO L470 AbstractCegarLoop]: Abstraction has 7604 states and 12744 transitions. [2022-01-10 18:09:57,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 12744 transitions. [2022-01-10 18:09:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:09:57,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:57,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:57,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:09:57,379 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:09:57,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1504262515, now seen corresponding path program 1 times [2022-01-10 18:09:57,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:57,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324823954] [2022-01-10 18:09:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:57,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:57,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:57,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324823954] [2022-01-10 18:09:57,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324823954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:57,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:57,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:09:57,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382248111] [2022-01-10 18:09:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:57,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:57,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:57,498 INFO L87 Difference]: Start difference. First operand 7604 states and 12744 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:59,435 INFO L93 Difference]: Finished difference Result 22533 states and 37321 transitions. [2022-01-10 18:09:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:09:59,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:09:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:59,465 INFO L225 Difference]: With dead ends: 22533 [2022-01-10 18:09:59,466 INFO L226 Difference]: Without dead ends: 17717 [2022-01-10 18:09:59,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:09:59,475 INFO L933 BasicCegarLoop]: 4273 mSDtfsCounter, 4100 mSDsluCounter, 7815 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 12088 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:59,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4100 Valid, 12088 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:09:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17717 states. [2022-01-10 18:10:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17717 to 9556. [2022-01-10 18:10:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9556 states, 9550 states have (on average 1.6586387434554974) internal successors, (15840), 9555 states have internal predecessors, (15840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 15840 transitions. [2022-01-10 18:10:00,361 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 15840 transitions. Word has length 72 [2022-01-10 18:10:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:00,362 INFO L470 AbstractCegarLoop]: Abstraction has 9556 states and 15840 transitions. [2022-01-10 18:10:00,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 15840 transitions. [2022-01-10 18:10:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:10:00,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:00,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:10:00,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:10:00,367 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:10:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:00,367 INFO L85 PathProgramCache]: Analyzing trace with hash 152498285, now seen corresponding path program 1 times [2022-01-10 18:10:00,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:00,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854643116] [2022-01-10 18:10:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:00,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:10:00,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:00,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854643116] [2022-01-10 18:10:00,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854643116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:00,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:00,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:10:00,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230379022] [2022-01-10 18:10:00,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:00,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:10:00,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:10:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:10:00,463 INFO L87 Difference]: Start difference. First operand 9556 states and 15840 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:07,020 INFO L93 Difference]: Finished difference Result 61166 states and 101242 transitions. [2022-01-10 18:10:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:10:07,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:10:07,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:07,131 INFO L225 Difference]: With dead ends: 61166 [2022-01-10 18:10:07,132 INFO L226 Difference]: Without dead ends: 55114 [2022-01-10 18:10:07,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:10:07,151 INFO L933 BasicCegarLoop]: 2800 mSDtfsCounter, 9916 mSDsluCounter, 7893 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9916 SdHoareTripleChecker+Valid, 10693 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:07,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9916 Valid, 10693 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:10:07,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55114 states. [2022-01-10 18:10:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55114 to 19050. [2022-01-10 18:10:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19050 states, 19044 states have (on average 1.658160050409578) internal successors, (31578), 19049 states have internal predecessors, (31578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19050 states to 19050 states and 31578 transitions. [2022-01-10 18:10:09,223 INFO L78 Accepts]: Start accepts. Automaton has 19050 states and 31578 transitions. Word has length 73 [2022-01-10 18:10:09,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:09,223 INFO L470 AbstractCegarLoop]: Abstraction has 19050 states and 31578 transitions. [2022-01-10 18:10:09,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:09,223 INFO L276 IsEmpty]: Start isEmpty. Operand 19050 states and 31578 transitions. [2022-01-10 18:10:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:10:09,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:09,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:10:09,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:10:09,232 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:10:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash 693094454, now seen corresponding path program 1 times [2022-01-10 18:10:09,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:09,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077831912] [2022-01-10 18:10:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:09,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:10:09,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:09,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077831912] [2022-01-10 18:10:09,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077831912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:09,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:09,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:10:09,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041851547] [2022-01-10 18:10:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:09,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:10:09,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:10:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:10:09,323 INFO L87 Difference]: Start difference. First operand 19050 states and 31578 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:12,457 INFO L93 Difference]: Finished difference Result 38614 states and 63709 transitions. [2022-01-10 18:10:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:10:12,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:10:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:12,496 INFO L225 Difference]: With dead ends: 38614 [2022-01-10 18:10:12,496 INFO L226 Difference]: Without dead ends: 23374 [2022-01-10 18:10:12,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:10:12,514 INFO L933 BasicCegarLoop]: 1630 mSDtfsCounter, 6547 mSDsluCounter, 6171 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6547 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:12,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6547 Valid, 7801 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:10:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23374 states. [2022-01-10 18:10:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23374 to 18828. [2022-01-10 18:10:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18828 states, 18822 states have (on average 1.6510466475401127) internal successors, (31076), 18827 states have internal predecessors, (31076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18828 states to 18828 states and 31076 transitions. [2022-01-10 18:10:14,544 INFO L78 Accepts]: Start accepts. Automaton has 18828 states and 31076 transitions. Word has length 73 [2022-01-10 18:10:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:14,545 INFO L470 AbstractCegarLoop]: Abstraction has 18828 states and 31076 transitions. [2022-01-10 18:10:14,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 18828 states and 31076 transitions. [2022-01-10 18:10:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:10:14,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:14,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:10:14,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:10:14,552 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:10:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1575367354, now seen corresponding path program 1 times [2022-01-10 18:10:14,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:14,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640855954] [2022-01-10 18:10:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:14,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:10:14,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:14,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640855954] [2022-01-10 18:10:14,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640855954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:14,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:14,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:10:14,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401009190] [2022-01-10 18:10:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:14,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:10:14,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:10:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:10:14,636 INFO L87 Difference]: Start difference. First operand 18828 states and 31076 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:19,940 INFO L93 Difference]: Finished difference Result 48720 states and 80645 transitions. [2022-01-10 18:10:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 18:10:19,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 18:10:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:20,006 INFO L225 Difference]: With dead ends: 48720 [2022-01-10 18:10:20,006 INFO L226 Difference]: Without dead ends: 40314 [2022-01-10 18:10:20,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:10:20,026 INFO L933 BasicCegarLoop]: 3354 mSDtfsCounter, 11618 mSDsluCounter, 9274 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11618 SdHoareTripleChecker+Valid, 12628 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:20,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11618 Valid, 12628 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:10:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40314 states. [2022-01-10 18:10:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40314 to 18808. [2022-01-10 18:10:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18808 states, 18802 states have (on average 1.6506754600574407) internal successors, (31036), 18807 states have internal predecessors, (31036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 31036 transitions. [2022-01-10 18:10:23,046 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 31036 transitions. Word has length 74 [2022-01-10 18:10:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:23,046 INFO L470 AbstractCegarLoop]: Abstraction has 18808 states and 31036 transitions. [2022-01-10 18:10:23,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 31036 transitions. [2022-01-10 18:10:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:10:23,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:23,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:10:23,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:10:23,055 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:10:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1771880859, now seen corresponding path program 1 times [2022-01-10 18:10:23,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:23,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260002298] [2022-01-10 18:10:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:23,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:10:23,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:23,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260002298] [2022-01-10 18:10:23,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260002298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:23,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:23,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:10:23,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535380907] [2022-01-10 18:10:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:23,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:10:23,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:23,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:10:23,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:10:23,157 INFO L87 Difference]: Start difference. First operand 18808 states and 31036 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:10:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:35,411 INFO L93 Difference]: Finished difference Result 92212 states and 149612 transitions. [2022-01-10 18:10:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:10:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 18:10:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:35,569 INFO L225 Difference]: With dead ends: 92212 [2022-01-10 18:10:35,569 INFO L226 Difference]: Without dead ends: 80518 [2022-01-10 18:10:35,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:10:35,596 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 6359 mSDsluCounter, 7106 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6359 SdHoareTripleChecker+Valid, 9002 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:35,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6359 Valid, 9002 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:10:35,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80518 states.