/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:55:30,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:55:30,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:55:30,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:55:30,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:55:30,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:55:30,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:55:30,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:55:30,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:55:30,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:55:30,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:55:30,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:55:30,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:55:30,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:55:30,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:55:30,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:55:30,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:55:30,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:55:30,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:55:30,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:55:30,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:55:30,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:55:30,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:55:30,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:55:30,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:55:30,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:55:30,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:55:30,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:55:30,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:55:30,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:55:30,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:55:30,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:55:30,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:55:30,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:55:30,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:55:30,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:55:30,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:55:30,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:55:30,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:55:30,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:55:30,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:55:30,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:55:30,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:55:30,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:55:30,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:55:30,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:55:30,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:55:30,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:55:30,468 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:55:30,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:55:30,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:55:30,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:55:30,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:55:30,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:55:30,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:55:30,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:55:30,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:55:30,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:55:30,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:55:30,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:55:30,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:55:30,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:55:30,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:55:30,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:55:30,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:55:30,472 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:55:30,472 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:55:30,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:55:30,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:55:30,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:55:30,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:55:30,682 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:55:30,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2022-01-11 05:55:30,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180967dfd/6ef6604c6e8b4ab8b7239263c3fce873/FLAG4821e9a1a [2022-01-11 05:55:31,130 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:55:31,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2022-01-11 05:55:31,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180967dfd/6ef6604c6e8b4ab8b7239263c3fce873/FLAG4821e9a1a [2022-01-11 05:55:31,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/180967dfd/6ef6604c6e8b4ab8b7239263c3fce873 [2022-01-11 05:55:31,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:55:31,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:55:31,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:55:31,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:55:31,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:55:31,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b5308c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31, skipping insertion in model container [2022-01-11 05:55:31,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:55:31,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:55:31,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c[5071,5084] [2022-01-11 05:55:31,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:55:31,472 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:55:31,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:55:31,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c[5071,5084] [2022-01-11 05:55:31,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:55:31,515 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:55:31,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c[5071,5084] [2022-01-11 05:55:31,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:55:31,570 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:55:31,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31 WrapperNode [2022-01-11 05:55:31,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:55:31,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:55:31,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:55:31,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:55:31,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,652 INFO L137 Inliner]: procedures = 57, calls = 156, calls flagged for inlining = 53, calls inlined = 84, statements flattened = 621 [2022-01-11 05:55:31,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:55:31,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:55:31,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:55:31,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:55:31,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:55:31,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:55:31,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:55:31,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:55:31,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (1/1) ... [2022-01-11 05:55:31,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:55:31,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:31,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:55:31,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:55:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:55:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:55:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:55:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:55:31,820 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:55:31,822 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:55:32,168 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:55:32,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:55:32,179 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 05:55:32,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:55:32 BoogieIcfgContainer [2022-01-11 05:55:32,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:55:32,181 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:55:32,181 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:55:32,182 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:55:32,184 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:55:32" (1/1) ... [2022-01-11 05:55:32,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:55:32 BasicIcfg [2022-01-11 05:55:32,306 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:55:32,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:55:32,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:55:32,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:55:32,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:55:31" (1/4) ... [2022-01-11 05:55:32,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b3f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:55:32, skipping insertion in model container [2022-01-11 05:55:32,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:55:31" (2/4) ... [2022-01-11 05:55:32,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b3f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:55:32, skipping insertion in model container [2022-01-11 05:55:32,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:55:32" (3/4) ... [2022-01-11 05:55:32,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b3f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:55:32, skipping insertion in model container [2022-01-11 05:55:32,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:55:32" (4/4) ... [2022-01-11 05:55:32,322 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.cTransformedIcfg [2022-01-11 05:55:32,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:55:32,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 05:55:32,356 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:55:32,361 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:55:32,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 05:55:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 165 states have (on average 1.387878787878788) internal successors, (229), 168 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 05:55:32,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:32,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:32,377 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:32,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:32,381 INFO L85 PathProgramCache]: Analyzing trace with hash -756148101, now seen corresponding path program 1 times [2022-01-11 05:55:32,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:32,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518501103] [2022-01-11 05:55:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:32,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:32,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:32,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518501103] [2022-01-11 05:55:32,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518501103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:32,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:32,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:32,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614628973] [2022-01-11 05:55:32,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:32,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:55:32,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:55:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:55:32,598 INFO L87 Difference]: Start difference. First operand has 169 states, 165 states have (on average 1.387878787878788) internal successors, (229), 168 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:32,644 INFO L93 Difference]: Finished difference Result 327 states and 446 transitions. [2022-01-11 05:55:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:55:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-11 05:55:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:32,657 INFO L225 Difference]: With dead ends: 327 [2022-01-11 05:55:32,657 INFO L226 Difference]: Without dead ends: 159 [2022-01-11 05:55:32,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:55:32,662 INFO L933 BasicCegarLoop]: 219 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, 219 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:32,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:32,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-01-11 05:55:32,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-01-11 05:55:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.3525641025641026) internal successors, (211), 158 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2022-01-11 05:55:32,717 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 21 [2022-01-11 05:55:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:32,718 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2022-01-11 05:55:32,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2022-01-11 05:55:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 05:55:32,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:32,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:32,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:55:32,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:32,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1273639277, now seen corresponding path program 1 times [2022-01-11 05:55:32,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:32,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966481222] [2022-01-11 05:55:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:32,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:32,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:32,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966481222] [2022-01-11 05:55:32,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966481222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:32,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:32,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:32,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549555368] [2022-01-11 05:55:32,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:32,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:32,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:32,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:32,830 INFO L87 Difference]: Start difference. First operand 159 states and 211 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:32,872 INFO L93 Difference]: Finished difference Result 310 states and 414 transitions. [2022-01-11 05:55:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-11 05:55:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:32,873 INFO L225 Difference]: With dead ends: 310 [2022-01-11 05:55:32,873 INFO L226 Difference]: Without dead ends: 159 [2022-01-11 05:55:32,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:32,875 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 194 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:32,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 205 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-01-11 05:55:32,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-01-11 05:55:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 158 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 208 transitions. [2022-01-11 05:55:32,884 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 208 transitions. Word has length 22 [2022-01-11 05:55:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:32,884 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 208 transitions. [2022-01-11 05:55:32,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 208 transitions. [2022-01-11 05:55:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 05:55:32,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:32,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:32,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:55:32,886 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:32,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash -177399547, now seen corresponding path program 1 times [2022-01-11 05:55:32,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:32,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80168633] [2022-01-11 05:55:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:32,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:32,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:32,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80168633] [2022-01-11 05:55:32,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80168633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:32,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:32,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:32,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569095743] [2022-01-11 05:55:32,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:32,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:32,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:32,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:32,977 INFO L87 Difference]: Start difference. First operand 159 states and 208 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:33,054 INFO L93 Difference]: Finished difference Result 380 states and 497 transitions. [2022-01-11 05:55:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:33,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-11 05:55:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:33,058 INFO L225 Difference]: With dead ends: 380 [2022-01-11 05:55:33,058 INFO L226 Difference]: Without dead ends: 229 [2022-01-11 05:55:33,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:33,066 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 137 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:33,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 327 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-11 05:55:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2022-01-11 05:55:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 220 states have (on average 1.2954545454545454) internal successors, (285), 222 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 285 transitions. [2022-01-11 05:55:33,079 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 285 transitions. Word has length 27 [2022-01-11 05:55:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:33,080 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 285 transitions. [2022-01-11 05:55:33,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 285 transitions. [2022-01-11 05:55:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 05:55:33,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:33,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:33,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:55:33,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash -321421912, now seen corresponding path program 1 times [2022-01-11 05:55:33,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:33,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59622280] [2022-01-11 05:55:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:33,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:33,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:33,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59622280] [2022-01-11 05:55:33,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59622280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:33,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:33,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:55:33,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710262633] [2022-01-11 05:55:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:33,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:55:33,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:55:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:55:33,180 INFO L87 Difference]: Start difference. First operand 223 states and 285 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:33,302 INFO L93 Difference]: Finished difference Result 844 states and 1074 transitions. [2022-01-11 05:55:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:55:33,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-11 05:55:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:33,304 INFO L225 Difference]: With dead ends: 844 [2022-01-11 05:55:33,304 INFO L226 Difference]: Without dead ends: 629 [2022-01-11 05:55:33,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:33,310 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 384 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:33,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 928 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-01-11 05:55:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 235. [2022-01-11 05:55:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 232 states have (on average 1.2801724137931034) internal successors, (297), 234 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 297 transitions. [2022-01-11 05:55:33,343 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 297 transitions. Word has length 33 [2022-01-11 05:55:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:33,344 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 297 transitions. [2022-01-11 05:55:33,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 297 transitions. [2022-01-11 05:55:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 05:55:33,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:33,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:33,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:55:33,348 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash -826980537, now seen corresponding path program 1 times [2022-01-11 05:55:33,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:33,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829985295] [2022-01-11 05:55:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:33,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:33,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:33,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829985295] [2022-01-11 05:55:33,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829985295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:33,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:33,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:55:33,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223632341] [2022-01-11 05:55:33,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:33,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:33,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:33,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:33,420 INFO L87 Difference]: Start difference. First operand 235 states and 297 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:33,428 INFO L93 Difference]: Finished difference Result 235 states and 297 transitions. [2022-01-11 05:55:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-11 05:55:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:33,429 INFO L225 Difference]: With dead ends: 235 [2022-01-11 05:55:33,429 INFO L226 Difference]: Without dead ends: 99 [2022-01-11 05:55:33,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:33,430 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 75 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:33,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 90 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-11 05:55:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-01-11 05:55:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 98 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2022-01-11 05:55:33,442 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 33 [2022-01-11 05:55:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:33,445 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2022-01-11 05:55:33,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2022-01-11 05:55:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 05:55:33,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:33,447 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] [2022-01-11 05:55:33,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:55:33,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -171934548, now seen corresponding path program 1 times [2022-01-11 05:55:33,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196163581] [2022-01-11 05:55:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:33,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:33,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:33,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196163581] [2022-01-11 05:55:33,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196163581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:33,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:33,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:55:33,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218511867] [2022-01-11 05:55:33,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:33,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:55:33,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:33,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:55:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:33,506 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:33,547 INFO L93 Difference]: Finished difference Result 261 states and 335 transitions. [2022-01-11 05:55:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:55:33,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 05:55:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:33,548 INFO L225 Difference]: With dead ends: 261 [2022-01-11 05:55:33,548 INFO L226 Difference]: Without dead ends: 170 [2022-01-11 05:55:33,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:55:33,549 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 178 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:33,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 412 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-01-11 05:55:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 105. [2022-01-11 05:55:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2788461538461537) internal successors, (133), 104 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2022-01-11 05:55:33,560 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 39 [2022-01-11 05:55:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:33,561 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2022-01-11 05:55:33,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2022-01-11 05:55:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 05:55:33,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:33,563 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] [2022-01-11 05:55:33,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:55:33,563 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:33,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:33,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2129567884, now seen corresponding path program 1 times [2022-01-11 05:55:33,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:33,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575692919] [2022-01-11 05:55:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:33,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:33,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:33,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575692919] [2022-01-11 05:55:33,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575692919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:33,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:33,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:55:33,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646590610] [2022-01-11 05:55:33,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:33,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:55:33,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:55:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:33,627 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:33,700 INFO L93 Difference]: Finished difference Result 366 states and 464 transitions. [2022-01-11 05:55:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:55:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 05:55:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:33,702 INFO L225 Difference]: With dead ends: 366 [2022-01-11 05:55:33,702 INFO L226 Difference]: Without dead ends: 269 [2022-01-11 05:55:33,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:55:33,703 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 217 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:33,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 482 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-11 05:55:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 104. [2022-01-11 05:55:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 103 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2022-01-11 05:55:33,712 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 39 [2022-01-11 05:55:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:33,713 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2022-01-11 05:55:33,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2022-01-11 05:55:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 05:55:33,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:33,714 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] [2022-01-11 05:55:33,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:55:33,714 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash -677493173, now seen corresponding path program 1 times [2022-01-11 05:55:33,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393810642] [2022-01-11 05:55:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:33,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:33,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:33,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393810642] [2022-01-11 05:55:33,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393810642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:33,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:33,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:55:33,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27230238] [2022-01-11 05:55:33,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:33,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:55:33,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:55:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:55:33,750 INFO L87 Difference]: Start difference. First operand 104 states and 130 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:33,782 INFO L93 Difference]: Finished difference Result 232 states and 291 transitions. [2022-01-11 05:55:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:55:33,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 05:55:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:33,783 INFO L225 Difference]: With dead ends: 232 [2022-01-11 05:55:33,783 INFO L226 Difference]: Without dead ends: 136 [2022-01-11 05:55:33,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:33,785 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 94 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:33,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 257 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-11 05:55:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2022-01-11 05:55:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2022-01-11 05:55:33,796 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 39 [2022-01-11 05:55:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:33,797 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2022-01-11 05:55:33,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2022-01-11 05:55:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 05:55:33,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:33,799 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] [2022-01-11 05:55:33,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:55:33,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1188027350, now seen corresponding path program 1 times [2022-01-11 05:55:33,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:33,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822415474] [2022-01-11 05:55:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:33,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:33,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:33,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822415474] [2022-01-11 05:55:33,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822415474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:33,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:33,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:55:33,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061616591] [2022-01-11 05:55:33,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:33,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:55:33,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:55:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:33,874 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:33,899 INFO L93 Difference]: Finished difference Result 235 states and 291 transitions. [2022-01-11 05:55:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:55:33,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 05:55:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:33,900 INFO L225 Difference]: With dead ends: 235 [2022-01-11 05:55:33,900 INFO L226 Difference]: Without dead ends: 139 [2022-01-11 05:55:33,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:55:33,902 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 25 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:33,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 148 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-11 05:55:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-01-11 05:55:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.2246376811594204) internal successors, (169), 138 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2022-01-11 05:55:33,938 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 169 transitions. Word has length 39 [2022-01-11 05:55:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:33,938 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 169 transitions. [2022-01-11 05:55:33,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:33,938 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 169 transitions. [2022-01-11 05:55:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-11 05:55:33,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:33,939 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] [2022-01-11 05:55:33,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:55:33,939 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:33,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1609852516, now seen corresponding path program 1 times [2022-01-11 05:55:33,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:33,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775509543] [2022-01-11 05:55:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:33,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:34,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:34,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775509543] [2022-01-11 05:55:34,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775509543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:34,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:34,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:55:34,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929331100] [2022-01-11 05:55:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:34,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:55:34,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:55:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:55:34,048 INFO L87 Difference]: Start difference. First operand 139 states and 169 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:34,215 INFO L93 Difference]: Finished difference Result 677 states and 845 transitions. [2022-01-11 05:55:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:55:34,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-11 05:55:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:34,217 INFO L225 Difference]: With dead ends: 677 [2022-01-11 05:55:34,217 INFO L226 Difference]: Without dead ends: 581 [2022-01-11 05:55:34,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:55:34,218 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 382 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:34,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 691 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-01-11 05:55:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 243. [2022-01-11 05:55:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.2272727272727273) internal successors, (297), 242 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 297 transitions. [2022-01-11 05:55:34,244 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 297 transitions. Word has length 41 [2022-01-11 05:55:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:34,244 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 297 transitions. [2022-01-11 05:55:34,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 297 transitions. [2022-01-11 05:55:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:55:34,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:34,245 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:34,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:55:34,245 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:34,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1317011756, now seen corresponding path program 1 times [2022-01-11 05:55:34,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:34,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337823053] [2022-01-11 05:55:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:34,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:34,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:34,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337823053] [2022-01-11 05:55:34,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337823053] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:34,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948590518] [2022-01-11 05:55:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:34,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:34,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:55:34,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:55:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:34,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-11 05:55:34,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:55:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:34,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:55:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:55:34,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948590518] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:55:34,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:55:34,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-11 05:55:34,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480541826] [2022-01-11 05:55:34,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:55:34,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:55:34,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:34,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:55:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:34,656 INFO L87 Difference]: Start difference. First operand 243 states and 297 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:34,768 INFO L93 Difference]: Finished difference Result 601 states and 758 transitions. [2022-01-11 05:55:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:55:34,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:55:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:34,770 INFO L225 Difference]: With dead ends: 601 [2022-01-11 05:55:34,771 INFO L226 Difference]: Without dead ends: 366 [2022-01-11 05:55:34,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:55:34,771 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 160 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:34,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 425 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:34,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-11 05:55:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 228. [2022-01-11 05:55:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 227 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 274 transitions. [2022-01-11 05:55:34,795 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 274 transitions. Word has length 69 [2022-01-11 05:55:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:34,796 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 274 transitions. [2022-01-11 05:55:34,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 274 transitions. [2022-01-11 05:55:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 05:55:34,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:34,797 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:34,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 05:55:35,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 05:55:35,030 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1569459827, now seen corresponding path program 1 times [2022-01-11 05:55:35,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:35,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647735083] [2022-01-11 05:55:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:35,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-11 05:55:35,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:35,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647735083] [2022-01-11 05:55:35,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647735083] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:35,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507978748] [2022-01-11 05:55:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:35,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:35,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:35,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:55:35,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:55:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:35,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 05:55:35,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:55:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 05:55:35,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:55:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 05:55:35,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507978748] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:55:35,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:55:35,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-11 05:55:35,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508631110] [2022-01-11 05:55:35,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:55:35,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 05:55:35,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 05:55:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:55:35,631 INFO L87 Difference]: Start difference. First operand 228 states and 274 transitions. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:36,455 INFO L93 Difference]: Finished difference Result 1508 states and 1831 transitions. [2022-01-11 05:55:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-11 05:55:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 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 124 [2022-01-11 05:55:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:36,459 INFO L225 Difference]: With dead ends: 1508 [2022-01-11 05:55:36,459 INFO L226 Difference]: Without dead ends: 1242 [2022-01-11 05:55:36,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=612, Invalid=2580, Unknown=0, NotChecked=0, Total=3192 [2022-01-11 05:55:36,461 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1547 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:36,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 1251 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:55:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-01-11 05:55:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 552. [2022-01-11 05:55:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 1.176043557168784) internal successors, (648), 551 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 648 transitions. [2022-01-11 05:55:36,543 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 648 transitions. Word has length 124 [2022-01-11 05:55:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:36,543 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 648 transitions. [2022-01-11 05:55:36,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 648 transitions. [2022-01-11 05:55:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 05:55:36,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:36,544 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:36,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 05:55:36,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-11 05:55:36,759 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:36,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1762902502, now seen corresponding path program 1 times [2022-01-11 05:55:36,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:36,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728739066] [2022-01-11 05:55:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:36,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-11 05:55:36,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:36,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728739066] [2022-01-11 05:55:36,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728739066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:36,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:36,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:55:36,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347540542] [2022-01-11 05:55:36,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:36,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:55:36,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:55:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:55:36,810 INFO L87 Difference]: Start difference. First operand 552 states and 648 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:36,929 INFO L93 Difference]: Finished difference Result 1439 states and 1698 transitions. [2022-01-11 05:55:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:55:36,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 05:55:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:36,932 INFO L225 Difference]: With dead ends: 1439 [2022-01-11 05:55:36,932 INFO L226 Difference]: Without dead ends: 895 [2022-01-11 05:55:36,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:55:36,934 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 367 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:36,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 678 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-01-11 05:55:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 519. [2022-01-11 05:55:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.1602316602316602) internal successors, (601), 518 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 601 transitions. [2022-01-11 05:55:36,983 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 601 transitions. Word has length 128 [2022-01-11 05:55:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:36,983 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 601 transitions. [2022-01-11 05:55:36,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 601 transitions. [2022-01-11 05:55:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 05:55:36,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:36,984 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:36,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:55:36,984 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1781765956, now seen corresponding path program 2 times [2022-01-11 05:55:36,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:36,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801962759] [2022-01-11 05:55:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:36,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 05:55:37,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:37,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801962759] [2022-01-11 05:55:37,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801962759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:37,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479414787] [2022-01-11 05:55:37,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:55:37,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:37,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:37,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:55:37,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 05:55:37,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:55:37,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:55:37,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 05:55:37,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:55:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 05:55:37,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:55:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 05:55:37,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479414787] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:37,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 05:55:37,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-01-11 05:55:37,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790152833] [2022-01-11 05:55:37,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:37,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:55:37,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:55:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-11 05:55:37,648 INFO L87 Difference]: Start difference. First operand 519 states and 601 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:38,031 INFO L93 Difference]: Finished difference Result 1635 states and 1921 transitions. [2022-01-11 05:55:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 05:55:38,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 05:55:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:38,035 INFO L225 Difference]: With dead ends: 1635 [2022-01-11 05:55:38,035 INFO L226 Difference]: Without dead ends: 1344 [2022-01-11 05:55:38,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-01-11 05:55:38,036 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 681 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:38,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 606 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:38,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-01-11 05:55:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 874. [2022-01-11 05:55:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.1718213058419245) internal successors, (1023), 873 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1023 transitions. [2022-01-11 05:55:38,133 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1023 transitions. Word has length 128 [2022-01-11 05:55:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:38,133 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1023 transitions. [2022-01-11 05:55:38,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1023 transitions. [2022-01-11 05:55:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-11 05:55:38,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:38,136 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:38,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 05:55:38,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:38,355 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1274092880, now seen corresponding path program 3 times [2022-01-11 05:55:38,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:38,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160372944] [2022-01-11 05:55:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:38,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-11 05:55:38,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:38,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160372944] [2022-01-11 05:55:38,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160372944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:55:38,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:55:38,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:55:38,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763894027] [2022-01-11 05:55:38,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:55:38,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:55:38,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:55:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:55:38,396 INFO L87 Difference]: Start difference. First operand 874 states and 1023 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:38,559 INFO L93 Difference]: Finished difference Result 1857 states and 2173 transitions. [2022-01-11 05:55:38,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:55:38,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-01-11 05:55:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:38,562 INFO L225 Difference]: With dead ends: 1857 [2022-01-11 05:55:38,562 INFO L226 Difference]: Without dead ends: 991 [2022-01-11 05:55:38,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:55:38,563 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 124 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:38,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 411 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:55:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-11 05:55:38,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 874. [2022-01-11 05:55:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.163802978235968) internal successors, (1016), 873 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1016 transitions. [2022-01-11 05:55:38,645 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1016 transitions. Word has length 130 [2022-01-11 05:55:38,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:38,645 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1016 transitions. [2022-01-11 05:55:38,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:38,645 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1016 transitions. [2022-01-11 05:55:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-11 05:55:38,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:55:38,646 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:55:38,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:55:38,647 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:55:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:55:38,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1675741011, now seen corresponding path program 1 times [2022-01-11 05:55:38,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:55:38,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948285900] [2022-01-11 05:55:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:38,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:55:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 26 proven. 101 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 05:55:38,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:55:38,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948285900] [2022-01-11 05:55:38,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948285900] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:55:38,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679017897] [2022-01-11 05:55:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:55:38,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:55:38,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:55:38,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:55:38,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 05:55:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:55:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-11 05:55:38,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:55:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 74 proven. 59 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:55:39,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:55:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 100 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:55:43,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679017897] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:55:43,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:55:43,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-01-11 05:55:43,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506596714] [2022-01-11 05:55:43,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:55:43,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-11 05:55:43,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:55:43,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-11 05:55:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-01-11 05:55:43,345 INFO L87 Difference]: Start difference. First operand 874 states and 1016 transitions. Second operand has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:55:43,629 INFO L93 Difference]: Finished difference Result 1707 states and 2002 transitions. [2022-01-11 05:55:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:55:43,630 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 0 states have call successors, (0), 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 131 [2022-01-11 05:55:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:55:43,630 INFO L225 Difference]: With dead ends: 1707 [2022-01-11 05:55:43,630 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 05:55:43,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 250 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2022-01-11 05:55:43,634 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 795 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:55:43,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1405 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:55:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 05:55:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 05:55:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 05:55:43,635 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 131 [2022-01-11 05:55:43,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:55:43,635 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 05:55:43,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:55:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 05:55:43,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 05:55:43,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 05:55:43,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 05:55:43,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 05:55:43,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 05:55:43,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-11 05:55:43,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 05:55:53,994 WARN L228 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 284 DAG size of output: 281 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 05:56:02,896 WARN L228 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 324 DAG size of output: 321 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)