/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_spec11_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:00:57,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:00:57,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:00:57,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:00:57,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:00:57,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:00:57,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:00:57,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:00:57,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:00:57,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:00:57,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:00:57,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:00:57,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:00:57,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:00:57,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:00:57,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:00:57,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:00:57,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:00:57,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:00:57,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:00:57,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:00:57,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:00:57,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:00:57,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:00:57,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:00:57,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:00:57,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:00:57,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:00:57,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:00:57,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:00:57,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:00:57,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:00:57,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:00:57,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:00:57,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:00:57,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:00:57,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:00:57,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:00:57,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:00:57,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:00:57,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:00:57,429 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 18:00:57,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:00:57,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:00:57,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:00:57,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:00:57,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:00:57,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:00:57,453 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:00:57,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:00:57,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:00:57,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:00:57,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:00:57,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:00:57,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:00:57,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:00:57,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:00:57,455 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:00:57,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:00:57,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:00:57,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:00:57,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:00:57,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:00:57,641 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:00:57,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product20.cil.c [2022-01-10 18:00:57,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3ed522e/d65339bb3eab4fb3a7147dffc8cc5895/FLAG15812019d [2022-01-10 18:00:58,124 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:00:58,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product20.cil.c [2022-01-10 18:00:58,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3ed522e/d65339bb3eab4fb3a7147dffc8cc5895/FLAG15812019d [2022-01-10 18:00:58,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3ed522e/d65339bb3eab4fb3a7147dffc8cc5895 [2022-01-10 18:00:58,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:00:58,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:00:58,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:00:58,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:00:58,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:00:58,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:00:58" (1/1) ... [2022-01-10 18:00:58,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27514cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:58, skipping insertion in model container [2022-01-10 18:00:58,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:00:58" (1/1) ... [2022-01-10 18:00:58,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:00:58,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:00:58,652 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_spec11_product20.cil.c[1543,1556] [2022-01-10 18:00:58,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:00:59,004 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:00:59,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:00:59,025 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_spec11_product20.cil.c[1543,1556] [2022-01-10 18:00:59,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:00:59,119 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:00:59,129 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_spec11_product20.cil.c[1543,1556] [2022-01-10 18:00:59,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:00:59,233 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:00:59,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59 WrapperNode [2022-01-10 18:00:59,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:00:59,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:00:59,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:00:59,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:00:59,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,393 INFO L137 Inliner]: procedures = 130, calls = 214, calls flagged for inlining = 124, calls inlined = 270, statements flattened = 3966 [2022-01-10 18:00:59,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:00:59,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:00:59,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:00:59,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:00:59,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:00:59,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:00:59,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:00:59,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:00:59,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (1/1) ... [2022-01-10 18:00:59,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:00:59,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:00:59,554 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 18:00:59,608 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 18:00:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:00:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:00:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:00:59,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:00:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:00:59,834 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:00:59,836 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:01:01,268 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:01:01,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:01:01,289 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:01:01,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:01 BoogieIcfgContainer [2022-01-10 18:01:01,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:01:01,292 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:01:01,292 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:01:01,294 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:01:01,297 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:01" (1/1) ... [2022-01-10 18:01:01,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:01:01 BasicIcfg [2022-01-10 18:01:01,697 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:01:01,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:01:01,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:01:01,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:01:01,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:00:58" (1/4) ... [2022-01-10 18:01:01,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77597dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:01:01, skipping insertion in model container [2022-01-10 18:01:01,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:59" (2/4) ... [2022-01-10 18:01:01,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77597dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:01:01, skipping insertion in model container [2022-01-10 18:01:01,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:01" (3/4) ... [2022-01-10 18:01:01,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77597dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:01:01, skipping insertion in model container [2022-01-10 18:01:01,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:01:01" (4/4) ... [2022-01-10 18:01:01,703 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.cTransformedIcfg [2022-01-10 18:01:01,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:01:01,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:01:01,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:01:01,759 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 18:01:01,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:01:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 916 states, 909 states have (on average 1.6853685368536853) internal successors, (1532), 915 states have internal predecessors, (1532), 0 states have call successors, (0), 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 18:01:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:01:01,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:01,843 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 18:01:01,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 257344556, now seen corresponding path program 1 times [2022-01-10 18:01:01,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:01,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714296841] [2022-01-10 18:01:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:01,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:02,141 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 18:01:02,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:02,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714296841] [2022-01-10 18:01:02,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714296841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:02,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:02,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:01:02,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227077505] [2022-01-10 18:01:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:02,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:01:02,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:01:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:01:02,169 INFO L87 Difference]: Start difference. First operand has 916 states, 909 states have (on average 1.6853685368536853) internal successors, (1532), 915 states have internal predecessors, (1532), 0 states have call successors, (0), 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 31.5) internal successors, (63), 2 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 18:01:02,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:02,249 INFO L93 Difference]: Finished difference Result 1523 states and 2517 transitions. [2022-01-10 18:01:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:01:02,256 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 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 18:01:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:02,274 INFO L225 Difference]: With dead ends: 1523 [2022-01-10 18:01:02,274 INFO L226 Difference]: Without dead ends: 875 [2022-01-10 18:01:02,281 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 18:01:02,286 INFO L933 BasicCegarLoop]: 1518 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, 1518 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 18:01:02,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-01-10 18:01:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2022-01-10 18:01:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.6915995397008055) internal successors, (1470), 874 states have internal predecessors, (1470), 0 states have call successors, (0), 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 18:01:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1470 transitions. [2022-01-10 18:01:02,370 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1470 transitions. Word has length 63 [2022-01-10 18:01:02,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:02,371 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1470 transitions. [2022-01-10 18:01:02,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 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 18:01:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1470 transitions. [2022-01-10 18:01:02,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:01:02,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:02,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:02,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:01:02,375 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 203705424, now seen corresponding path program 1 times [2022-01-10 18:01:02,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:02,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64542090] [2022-01-10 18:01:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:02,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:02,546 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 18:01:02,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:02,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64542090] [2022-01-10 18:01:02,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64542090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:02,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:02,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:01:02,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943440385] [2022-01-10 18:01:02,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:02,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:01:02,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:01:02,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:01:02,553 INFO L87 Difference]: Start difference. First operand 875 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:02,627 INFO L93 Difference]: Finished difference Result 1731 states and 2912 transitions. [2022-01-10 18:01:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:01:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:01:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:02,631 INFO L225 Difference]: With dead ends: 1731 [2022-01-10 18:01:02,631 INFO L226 Difference]: Without dead ends: 875 [2022-01-10 18:01:02,633 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 18:01:02,634 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 1445 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:02,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 1462 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-01-10 18:01:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2022-01-10 18:01:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.6892980437284235) internal successors, (1468), 874 states have internal predecessors, (1468), 0 states have call successors, (0), 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 18:01:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1468 transitions. [2022-01-10 18:01:02,656 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1468 transitions. Word has length 64 [2022-01-10 18:01:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:02,656 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1468 transitions. [2022-01-10 18:01:02,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1468 transitions. [2022-01-10 18:01:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:01:02,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:02,659 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 18:01:02,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:01:02,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2101820048, now seen corresponding path program 1 times [2022-01-10 18:01:02,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:02,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711953946] [2022-01-10 18:01:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:02,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:02,846 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 18:01:02,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:02,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711953946] [2022-01-10 18:01:02,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711953946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:02,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:02,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:02,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331870059] [2022-01-10 18:01:02,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:02,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:02,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:02,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:02,848 INFO L87 Difference]: Start difference. First operand 875 states and 1468 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:01:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:03,116 INFO L93 Difference]: Finished difference Result 4243 states and 7136 transitions. [2022-01-10 18:01:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:01:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:01:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:03,134 INFO L225 Difference]: With dead ends: 4243 [2022-01-10 18:01:03,135 INFO L226 Difference]: Without dead ends: 3392 [2022-01-10 18:01:03,141 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 18:01:03,145 INFO L933 BasicCegarLoop]: 2859 mSDtfsCounter, 7123 mSDsluCounter, 4276 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7123 SdHoareTripleChecker+Valid, 7135 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 18:01:03,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7123 Valid, 7135 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2022-01-10 18:01:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 875. [2022-01-10 18:01:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.6881472957422325) internal successors, (1467), 874 states have internal predecessors, (1467), 0 states have call successors, (0), 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 18:01:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1467 transitions. [2022-01-10 18:01:03,207 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1467 transitions. Word has length 66 [2022-01-10 18:01:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:03,207 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1467 transitions. [2022-01-10 18:01:03,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 18:01:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1467 transitions. [2022-01-10 18:01:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:01:03,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:03,210 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 18:01:03,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:01:03,210 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:03,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:03,211 INFO L85 PathProgramCache]: Analyzing trace with hash -392550010, now seen corresponding path program 1 times [2022-01-10 18:01:03,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:03,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196653582] [2022-01-10 18:01:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:03,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:03,353 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 18:01:03,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:03,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196653582] [2022-01-10 18:01:03,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196653582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:03,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:03,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:01:03,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191739801] [2022-01-10 18:01:03,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:03,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:01:03,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:01:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:01:03,356 INFO L87 Difference]: Start difference. First operand 875 states and 1467 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:03,433 INFO L93 Difference]: Finished difference Result 1735 states and 2912 transitions. [2022-01-10 18:01:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:01:03,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:01:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:03,438 INFO L225 Difference]: With dead ends: 1735 [2022-01-10 18:01:03,438 INFO L226 Difference]: Without dead ends: 889 [2022-01-10 18:01:03,440 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 18:01:03,444 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 1446 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 1503 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 18:01:03,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 1503 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-01-10 18:01:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 875. [2022-01-10 18:01:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.6869965477560414) internal successors, (1466), 874 states have internal predecessors, (1466), 0 states have call successors, (0), 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 18:01:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1466 transitions. [2022-01-10 18:01:03,489 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1466 transitions. Word has length 67 [2022-01-10 18:01:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:03,490 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1466 transitions. [2022-01-10 18:01:03,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1466 transitions. [2022-01-10 18:01:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:01:03,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:03,492 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] [2022-01-10 18:01:03,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:01:03,492 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash 621594255, now seen corresponding path program 1 times [2022-01-10 18:01:03,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:03,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123114389] [2022-01-10 18:01:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:03,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:03,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:03,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123114389] [2022-01-10 18:01:03,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123114389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:03,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:03,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:03,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699876846] [2022-01-10 18:01:03,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:03,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:03,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:03,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:03,619 INFO L87 Difference]: Start difference. First operand 875 states and 1466 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 18:01:03,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:03,803 INFO L93 Difference]: Finished difference Result 2559 states and 4298 transitions. [2022-01-10 18:01:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:01:03,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 18:01:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:03,809 INFO L225 Difference]: With dead ends: 2559 [2022-01-10 18:01:03,809 INFO L226 Difference]: Without dead ends: 1718 [2022-01-10 18:01:03,810 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 18:01:03,811 INFO L933 BasicCegarLoop]: 1475 mSDtfsCounter, 7046 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7046 SdHoareTripleChecker+Valid, 2964 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 18:01:03,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7046 Valid, 2964 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2022-01-10 18:01:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 875. [2022-01-10 18:01:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.6846950517836594) internal successors, (1464), 874 states have internal predecessors, (1464), 0 states have call successors, (0), 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 18:01:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1464 transitions. [2022-01-10 18:01:03,860 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1464 transitions. Word has length 68 [2022-01-10 18:01:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:03,865 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1464 transitions. [2022-01-10 18:01:03,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 18:01:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1464 transitions. [2022-01-10 18:01:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:01:03,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:03,866 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 18:01:03,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:01:03,866 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:03,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash 283977298, now seen corresponding path program 1 times [2022-01-10 18:01:03,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:03,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661613802] [2022-01-10 18:01:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:03,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:04,040 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 18:01:04,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:04,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661613802] [2022-01-10 18:01:04,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661613802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:04,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:04,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:01:04,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057241272] [2022-01-10 18:01:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:04,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:01:04,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:04,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:01:04,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:01:04,042 INFO L87 Difference]: Start difference. First operand 875 states and 1464 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 18:01:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:05,170 INFO L93 Difference]: Finished difference Result 4783 states and 7737 transitions. [2022-01-10 18:01:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:01:05,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 18:01:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:05,184 INFO L225 Difference]: With dead ends: 4783 [2022-01-10 18:01:05,184 INFO L226 Difference]: Without dead ends: 4268 [2022-01-10 18:01:05,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:01:05,186 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 13720 mSDsluCounter, 11312 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13720 SdHoareTripleChecker+Valid, 13491 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:05,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13720 Valid, 13491 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:01:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-01-10 18:01:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 1584. [2022-01-10 18:01:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1578 states have (on average 1.693916349809886) internal successors, (2673), 1583 states have internal predecessors, (2673), 0 states have call successors, (0), 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 18:01:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2673 transitions. [2022-01-10 18:01:05,285 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2673 transitions. Word has length 70 [2022-01-10 18:01:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:05,285 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 2673 transitions. [2022-01-10 18:01:05,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 18:01:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2673 transitions. [2022-01-10 18:01:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:01:05,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:05,287 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 18:01:05,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:01:05,288 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1070684120, now seen corresponding path program 1 times [2022-01-10 18:01:05,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:05,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118977837] [2022-01-10 18:01:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:05,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:05,396 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 18:01:05,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:05,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118977837] [2022-01-10 18:01:05,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118977837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:05,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:05,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:01:05,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445920209] [2022-01-10 18:01:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:05,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:01:05,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:01:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:01:05,398 INFO L87 Difference]: Start difference. First operand 1584 states and 2673 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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 18:01:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:06,762 INFO L93 Difference]: Finished difference Result 7654 states and 12487 transitions. [2022-01-10 18:01:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:01:06,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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 18:01:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:06,782 INFO L225 Difference]: With dead ends: 7654 [2022-01-10 18:01:06,783 INFO L226 Difference]: Without dead ends: 6758 [2022-01-10 18:01:06,785 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 18:01:06,785 INFO L933 BasicCegarLoop]: 2043 mSDtfsCounter, 11575 mSDsluCounter, 11995 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11575 SdHoareTripleChecker+Valid, 14038 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:06,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11575 Valid, 14038 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:01:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6758 states. [2022-01-10 18:01:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6758 to 3012. [2022-01-10 18:01:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3006 states have (on average 1.6989354624085162) internal successors, (5107), 3011 states have internal predecessors, (5107), 0 states have call successors, (0), 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 18:01:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 5107 transitions. [2022-01-10 18:01:06,982 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 5107 transitions. Word has length 71 [2022-01-10 18:01:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:06,982 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 5107 transitions. [2022-01-10 18:01:06,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 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 18:01:06,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 5107 transitions. [2022-01-10 18:01:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:01:06,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:06,985 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 18:01:06,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:01:06,985 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1147073833, now seen corresponding path program 1 times [2022-01-10 18:01:06,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:06,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385172685] [2022-01-10 18:01:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:06,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:07,092 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 18:01:07,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:07,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385172685] [2022-01-10 18:01:07,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385172685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:07,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:07,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:01:07,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125101596] [2022-01-10 18:01:07,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:07,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:01:07,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:01:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:01:07,094 INFO L87 Difference]: Start difference. First operand 3012 states and 5107 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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 18:01:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:08,183 INFO L93 Difference]: Finished difference Result 16076 states and 26908 transitions. [2022-01-10 18:01:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:01:08,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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 18:01:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:08,253 INFO L225 Difference]: With dead ends: 16076 [2022-01-10 18:01:08,253 INFO L226 Difference]: Without dead ends: 14740 [2022-01-10 18:01:08,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:01:08,258 INFO L933 BasicCegarLoop]: 2222 mSDtfsCounter, 8678 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8678 SdHoareTripleChecker+Valid, 10475 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:08,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8678 Valid, 10475 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14740 states. [2022-01-10 18:01:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14740 to 5962. [2022-01-10 18:01:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5956 states have (on average 1.6974479516453995) internal successors, (10110), 5961 states have internal predecessors, (10110), 0 states have call successors, (0), 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 18:01:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 10110 transitions. [2022-01-10 18:01:08,667 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 10110 transitions. Word has length 71 [2022-01-10 18:01:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:08,668 INFO L470 AbstractCegarLoop]: Abstraction has 5962 states and 10110 transitions. [2022-01-10 18:01:08,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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 18:01:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 10110 transitions. [2022-01-10 18:01:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:01:08,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:08,673 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 18:01:08,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:01:08,673 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash 36723075, now seen corresponding path program 1 times [2022-01-10 18:01:08,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:08,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955450660] [2022-01-10 18:01:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:08,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:08,760 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 18:01:08,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955450660] [2022-01-10 18:01:08,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955450660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:08,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:08,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:01:08,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877470528] [2022-01-10 18:01:08,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:08,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:01:08,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:01:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:01:08,761 INFO L87 Difference]: Start difference. First operand 5962 states and 10110 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 18:01:10,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:10,765 INFO L93 Difference]: Finished difference Result 31702 states and 53108 transitions. [2022-01-10 18:01:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:01:10,766 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 18:01:10,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:10,841 INFO L225 Difference]: With dead ends: 31702 [2022-01-10 18:01:10,841 INFO L226 Difference]: Without dead ends: 29094 [2022-01-10 18:01:10,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:01:10,856 INFO L933 BasicCegarLoop]: 2156 mSDtfsCounter, 8461 mSDsluCounter, 6400 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8461 SdHoareTripleChecker+Valid, 8556 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:10,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8461 Valid, 8556 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:10,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29094 states. [2022-01-10 18:01:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29094 to 11836. [2022-01-10 18:01:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11836 states, 11830 states have (on average 1.6977176669484362) internal successors, (20084), 11835 states have internal predecessors, (20084), 0 states have call successors, (0), 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 18:01:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 20084 transitions. [2022-01-10 18:01:11,871 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 20084 transitions. Word has length 72 [2022-01-10 18:01:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:11,871 INFO L470 AbstractCegarLoop]: Abstraction has 11836 states and 20084 transitions. [2022-01-10 18:01:11,872 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 18:01:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 20084 transitions. [2022-01-10 18:01:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:01:11,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:11,885 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 18:01:11,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:01:11,885 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1681527761, now seen corresponding path program 1 times [2022-01-10 18:01:11,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:11,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264560440] [2022-01-10 18:01:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:11,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:11,968 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 18:01:11,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:11,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264560440] [2022-01-10 18:01:11,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264560440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:11,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:11,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:11,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115878609] [2022-01-10 18:01:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:11,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:11,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:11,970 INFO L87 Difference]: Start difference. First operand 11836 states and 20084 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 18:01:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:13,642 INFO L93 Difference]: Finished difference Result 35164 states and 59728 transitions. [2022-01-10 18:01:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:01:13,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 18:01:13,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:13,689 INFO L225 Difference]: With dead ends: 35164 [2022-01-10 18:01:13,689 INFO L226 Difference]: Without dead ends: 23378 [2022-01-10 18:01:13,716 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 18:01:13,717 INFO L933 BasicCegarLoop]: 2831 mSDtfsCounter, 4329 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4329 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:13,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4329 Valid, 4248 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23378 states. [2022-01-10 18:01:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23378 to 11836. [2022-01-10 18:01:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11836 states, 11830 states have (on average 1.697548605240913) internal successors, (20082), 11835 states have internal predecessors, (20082), 0 states have call successors, (0), 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 18:01:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 20082 transitions. [2022-01-10 18:01:14,667 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 20082 transitions. Word has length 72 [2022-01-10 18:01:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:14,668 INFO L470 AbstractCegarLoop]: Abstraction has 11836 states and 20082 transitions. [2022-01-10 18:01:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 18:01:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 20082 transitions. [2022-01-10 18:01:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:01:14,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:14,677 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 18:01:14,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:01:14,678 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1218010625, now seen corresponding path program 1 times [2022-01-10 18:01:14,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:14,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675698383] [2022-01-10 18:01:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:14,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:14,818 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 18:01:14,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:14,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675698383] [2022-01-10 18:01:14,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675698383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:14,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:14,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:01:14,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877973919] [2022-01-10 18:01:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:14,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:01:14,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:14,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:01:14,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:01:14,820 INFO L87 Difference]: Start difference. First operand 11836 states and 20082 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 18:01:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:18,620 INFO L93 Difference]: Finished difference Result 38730 states and 63752 transitions. [2022-01-10 18:01:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 18:01:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 18:01:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:18,687 INFO L225 Difference]: With dead ends: 38730 [2022-01-10 18:01:18,689 INFO L226 Difference]: Without dead ends: 32976 [2022-01-10 18:01:18,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:01:18,709 INFO L933 BasicCegarLoop]: 2660 mSDtfsCounter, 11689 mSDsluCounter, 9093 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11689 SdHoareTripleChecker+Valid, 11753 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:18,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11689 Valid, 11753 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:01:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32976 states. [2022-01-10 18:01:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32976 to 13684. [2022-01-10 18:01:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13684 states, 13678 states have (on average 1.6869425354584004) internal successors, (23074), 13683 states have internal predecessors, (23074), 0 states have call successors, (0), 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 18:01:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13684 states to 13684 states and 23074 transitions. [2022-01-10 18:01:19,870 INFO L78 Accepts]: Start accepts. Automaton has 13684 states and 23074 transitions. Word has length 73 [2022-01-10 18:01:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:19,871 INFO L470 AbstractCegarLoop]: Abstraction has 13684 states and 23074 transitions. [2022-01-10 18:01:19,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 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 18:01:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 13684 states and 23074 transitions. [2022-01-10 18:01:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:01:19,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:19,881 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 18:01:19,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:01:19,882 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 289541184, now seen corresponding path program 1 times [2022-01-10 18:01:19,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:19,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938925014] [2022-01-10 18:01:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:19,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:20,004 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 18:01:20,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:20,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938925014] [2022-01-10 18:01:20,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938925014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:20,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:20,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:20,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557270309] [2022-01-10 18:01:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:20,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:20,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:20,006 INFO L87 Difference]: Start difference. First operand 13684 states and 23074 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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 18:01:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:23,326 INFO L93 Difference]: Finished difference Result 48178 states and 80188 transitions. [2022-01-10 18:01:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:01:23,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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 18:01:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:23,425 INFO L225 Difference]: With dead ends: 48178 [2022-01-10 18:01:23,425 INFO L226 Difference]: Without dead ends: 41834 [2022-01-10 18:01:23,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 18:01:23,446 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 4439 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:23,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4439 Valid, 5720 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41834 states. [2022-01-10 18:01:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41834 to 27400. [2022-01-10 18:01:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27400 states, 27394 states have (on average 1.6848214937577572) internal successors, (46154), 27399 states have internal predecessors, (46154), 0 states have call successors, (0), 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 18:01:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27400 states to 27400 states and 46154 transitions. [2022-01-10 18:01:25,917 INFO L78 Accepts]: Start accepts. Automaton has 27400 states and 46154 transitions. Word has length 73 [2022-01-10 18:01:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:25,917 INFO L470 AbstractCegarLoop]: Abstraction has 27400 states and 46154 transitions. [2022-01-10 18:01:25,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 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 18:01:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 27400 states and 46154 transitions. [2022-01-10 18:01:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:01:25,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:25,936 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 18:01:25,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:01:25,936 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1484274813, now seen corresponding path program 1 times [2022-01-10 18:01:25,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:25,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377876987] [2022-01-10 18:01:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:25,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:26,044 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 18:01:26,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:26,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377876987] [2022-01-10 18:01:26,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377876987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:26,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:26,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:26,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963064240] [2022-01-10 18:01:26,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:26,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:26,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:26,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:26,046 INFO L87 Difference]: Start difference. First operand 27400 states and 46154 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 18:01:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:33,158 INFO L93 Difference]: Finished difference Result 96548 states and 160530 transitions. [2022-01-10 18:01:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:01:33,158 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 18:01:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:33,302 INFO L225 Difference]: With dead ends: 96548 [2022-01-10 18:01:33,303 INFO L226 Difference]: Without dead ends: 83818 [2022-01-10 18:01:33,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:01:33,336 INFO L933 BasicCegarLoop]: 1965 mSDtfsCounter, 3416 mSDsluCounter, 4276 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3416 SdHoareTripleChecker+Valid, 6241 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:33,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3416 Valid, 6241 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:33,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83818 states. [2022-01-10 18:01:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83818 to 54834. [2022-01-10 18:01:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54834 states, 54828 states have (on average 1.68377471364996) internal successors, (92318), 54833 states have internal predecessors, (92318), 0 states have call successors, (0), 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 18:01:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54834 states to 54834 states and 92318 transitions. [2022-01-10 18:01:38,384 INFO L78 Accepts]: Start accepts. Automaton has 54834 states and 92318 transitions. Word has length 74 [2022-01-10 18:01:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:38,384 INFO L470 AbstractCegarLoop]: Abstraction has 54834 states and 92318 transitions. [2022-01-10 18:01:38,385 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2022-01-10 18:01:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 54834 states and 92318 transitions. [2022-01-10 18:01:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:01:38,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:38,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:38,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:01:38,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:01:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2082237608, now seen corresponding path program 1 times [2022-01-10 18:01:38,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:38,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961281090] [2022-01-10 18:01:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:38,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:38,673 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 18:01:38,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:38,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961281090] [2022-01-10 18:01:38,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961281090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:38,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:38,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:01:38,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375049812] [2022-01-10 18:01:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:38,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:01:38,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:01:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:01:38,675 INFO L87 Difference]: Start difference. First operand 54834 states and 92318 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 18:01:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:56,184 INFO L93 Difference]: Finished difference Result 186663 states and 308108 transitions. [2022-01-10 18:01:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-10 18:01:56,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 18:01:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:56,600 INFO L225 Difference]: With dead ends: 186663 [2022-01-10 18:01:56,601 INFO L226 Difference]: Without dead ends: 160875 [2022-01-10 18:01:56,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=458, Invalid=1182, Unknown=0, NotChecked=0, Total=1640 [2022-01-10 18:01:56,653 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 16551 mSDsluCounter, 14665 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16551 SdHoareTripleChecker+Valid, 17468 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:56,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16551 Valid, 17468 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 18:01:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160875 states. [2022-01-10 18:02:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160875 to 63096. [2022-01-10 18:02:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63096 states, 63090 states have (on average 1.668251703915042) internal successors, (105250), 63095 states have internal predecessors, (105250), 0 states have call successors, (0), 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 18:02:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63096 states to 63096 states and 105250 transitions. [2022-01-10 18:02:03,558 INFO L78 Accepts]: Start accepts. Automaton has 63096 states and 105250 transitions. Word has length 75 [2022-01-10 18:02:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:03,558 INFO L470 AbstractCegarLoop]: Abstraction has 63096 states and 105250 transitions. [2022-01-10 18:02:03,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 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 18:02:03,559 INFO L276 IsEmpty]: Start isEmpty. Operand 63096 states and 105250 transitions. [2022-01-10 18:02:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:02:03,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:03,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:03,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:02:03,583 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:02:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash 274783145, now seen corresponding path program 1 times [2022-01-10 18:02:03,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:03,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556291172] [2022-01-10 18:02:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:03,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:03,740 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 18:02:03,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:03,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556291172] [2022-01-10 18:02:03,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556291172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:03,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:03,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:02:03,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496773500] [2022-01-10 18:02:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:03,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:02:03,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:02:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:02:03,742 INFO L87 Difference]: Start difference. First operand 63096 states and 105250 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)