/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:24:40,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:24:40,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:24:40,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:24:40,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:24:40,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:24:40,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:24:40,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:24:40,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:24:40,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:24:40,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:24:40,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:24:40,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:24:40,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:24:40,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:24:40,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:24:40,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:24:40,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:24:40,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:24:40,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:24:40,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:24:40,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:24:40,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:24:40,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:24:40,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:24:40,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:24:40,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:24:40,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:24:40,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:24:40,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:24:40,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:24:40,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:24:40,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:24:40,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:24:40,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:24:40,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:24:40,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:24:40,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:24:40,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:24:40,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:24:40,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:24:40,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:24:40,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:24:40,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:24:40,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:24:40,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:24:40,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:24:40,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:24:40,494 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:24:40,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:24:40,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:24:40,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:24:40,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:24:40,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:24:40,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:24:40,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:24:40,524 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:24:40,524 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:24:40,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:24:40,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:24:40,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:24:40,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:24:40,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:24:40,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:24:40,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:24:40,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:24:40,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:24:40,527 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:24:40,527 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:24:40,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:24:40,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:24:40,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:24:40,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:24:40,682 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:24:40,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2022-01-10 12:24:40,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1342001f/627e6cae309446bca11e07343b6245bd/FLAGe3b572ad3 [2022-01-10 12:24:41,136 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:24:41,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2022-01-10 12:24:41,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1342001f/627e6cae309446bca11e07343b6245bd/FLAGe3b572ad3 [2022-01-10 12:24:41,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1342001f/627e6cae309446bca11e07343b6245bd [2022-01-10 12:24:41,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:24:41,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:24:41,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:24:41,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:24:41,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:24:41,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d5564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41, skipping insertion in model container [2022-01-10 12:24:41,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:24:41,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:24:41,364 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_spec2_product60.cil.c[3241,3254] [2022-01-10 12:24:41,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:24:41,461 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:24:41,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:24:41,477 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_spec2_product60.cil.c[3241,3254] [2022-01-10 12:24:41,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:24:41,511 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:24:41,526 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_spec2_product60.cil.c[3241,3254] [2022-01-10 12:24:41,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:24:41,609 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:24:41,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41 WrapperNode [2022-01-10 12:24:41,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:24:41,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:24:41,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:24:41,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:24:41,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,715 INFO L137 Inliner]: procedures = 61, calls = 160, calls flagged for inlining = 57, calls inlined = 99, statements flattened = 751 [2022-01-10 12:24:41,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:24:41,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:24:41,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:24:41,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:24:41,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:24:41,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:24:41,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:24:41,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:24:41,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (1/1) ... [2022-01-10 12:24:41,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:24:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:24:41,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:24:41,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:24:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:24:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:24:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:24:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:24:41,975 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:24:41,976 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:24:42,371 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:24:42,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:24:42,377 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 12:24:42,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:42 BoogieIcfgContainer [2022-01-10 12:24:42,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:24:42,379 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:24:42,379 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:24:42,381 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:24:42,383 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:42" (1/1) ... [2022-01-10 12:24:42,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:24:42 BasicIcfg [2022-01-10 12:24:42,488 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:24:42,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:24:42,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:24:42,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:24:42,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:24:41" (1/4) ... [2022-01-10 12:24:42,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7622cc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:42, skipping insertion in model container [2022-01-10 12:24:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:41" (2/4) ... [2022-01-10 12:24:42,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7622cc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:42, skipping insertion in model container [2022-01-10 12:24:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:42" (3/4) ... [2022-01-10 12:24:42,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7622cc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:24:42, skipping insertion in model container [2022-01-10 12:24:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:24:42" (4/4) ... [2022-01-10 12:24:42,493 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product60.cil.cTransformedIcfg [2022-01-10 12:24:42,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:24:42,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 12:24:42,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:24:42,542 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:24:42,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 12:24:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 194 states have (on average 1.3814432989690721) internal successors, (268), 197 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 12:24:42,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:42,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:42,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:42,561 INFO L85 PathProgramCache]: Analyzing trace with hash 424702904, now seen corresponding path program 1 times [2022-01-10 12:24:42,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:42,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675040149] [2022-01-10 12:24:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:42,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:24:42,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:42,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675040149] [2022-01-10 12:24:42,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675040149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:42,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:42,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:24:42,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605142516] [2022-01-10 12:24:42,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:42,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:24:42,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:24:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:24:42,734 INFO L87 Difference]: Start difference. First operand has 198 states, 194 states have (on average 1.3814432989690721) internal successors, (268), 197 states have internal predecessors, (268), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:42,781 INFO L93 Difference]: Finished difference Result 385 states and 524 transitions. [2022-01-10 12:24:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:24:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-10 12:24:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:42,802 INFO L225 Difference]: With dead ends: 385 [2022-01-10 12:24:42,802 INFO L226 Difference]: Without dead ends: 188 [2022-01-10 12:24:42,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:24:42,807 INFO L933 BasicCegarLoop]: 258 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, 258 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:42,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-10 12:24:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-01-10 12:24:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 185 states have (on average 1.3513513513513513) internal successors, (250), 187 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2022-01-10 12:24:42,864 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 19 [2022-01-10 12:24:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:42,864 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2022-01-10 12:24:42,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2022-01-10 12:24:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 12:24:42,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:42,867 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] [2022-01-10 12:24:42,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:24:42,868 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:42,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1576302926, now seen corresponding path program 1 times [2022-01-10 12:24:42,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:42,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144099931] [2022-01-10 12:24:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:42,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:24:42,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:42,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144099931] [2022-01-10 12:24:42,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144099931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:42,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:42,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:24:42,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670967842] [2022-01-10 12:24:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:42,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:24:42,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:24:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:42,984 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:43,020 INFO L93 Difference]: Finished difference Result 432 states and 579 transitions. [2022-01-10 12:24:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:24:43,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-10 12:24:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:43,021 INFO L225 Difference]: With dead ends: 432 [2022-01-10 12:24:43,022 INFO L226 Difference]: Without dead ends: 252 [2022-01-10 12:24:43,022 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 [2022-01-10 12:24:43,023 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 232 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:43,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 339 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-01-10 12:24:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 243. [2022-01-10 12:24:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 240 states have (on average 1.3625) internal successors, (327), 242 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2022-01-10 12:24:43,036 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 20 [2022-01-10 12:24:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:43,037 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2022-01-10 12:24:43,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2022-01-10 12:24:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 12:24:43,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:43,038 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] [2022-01-10 12:24:43,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:24:43,038 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1948137889, now seen corresponding path program 1 times [2022-01-10 12:24:43,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:43,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574568771] [2022-01-10 12:24:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:43,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:24:43,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:43,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574568771] [2022-01-10 12:24:43,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574568771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:43,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:43,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:24:43,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914499415] [2022-01-10 12:24:43,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:43,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:24:43,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:24:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:43,104 INFO L87 Difference]: Start difference. First operand 243 states and 327 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:43,163 INFO L93 Difference]: Finished difference Result 544 states and 729 transitions. [2022-01-10 12:24:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:24:43,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-01-10 12:24:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:43,165 INFO L225 Difference]: With dead ends: 544 [2022-01-10 12:24:43,165 INFO L226 Difference]: Without dead ends: 309 [2022-01-10 12:24:43,166 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 [2022-01-10 12:24:43,167 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 172 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:43,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 348 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:43,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-10 12:24:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 303. [2022-01-10 12:24:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 300 states have (on average 1.3133333333333332) internal successors, (394), 302 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 394 transitions. [2022-01-10 12:24:43,182 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 394 transitions. Word has length 25 [2022-01-10 12:24:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:43,182 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 394 transitions. [2022-01-10 12:24:43,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 394 transitions. [2022-01-10 12:24:43,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 12:24:43,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:43,183 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] [2022-01-10 12:24:43,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:24:43,184 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1307506292, now seen corresponding path program 1 times [2022-01-10 12:24:43,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:43,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615204527] [2022-01-10 12:24:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:43,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:24:43,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:43,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615204527] [2022-01-10 12:24:43,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615204527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:43,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:43,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:24:43,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901945040] [2022-01-10 12:24:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:43,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:24:43,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:24:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:43,244 INFO L87 Difference]: Start difference. First operand 303 states and 394 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:43,299 INFO L93 Difference]: Finished difference Result 598 states and 780 transitions. [2022-01-10 12:24:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:24:43,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 12:24:43,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:43,302 INFO L225 Difference]: With dead ends: 598 [2022-01-10 12:24:43,302 INFO L226 Difference]: Without dead ends: 592 [2022-01-10 12:24:43,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:43,311 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 206 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:43,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 465 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-01-10 12:24:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2022-01-10 12:24:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 589 states have (on average 1.303904923599321) internal successors, (768), 591 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 768 transitions. [2022-01-10 12:24:43,362 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 768 transitions. Word has length 30 [2022-01-10 12:24:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:43,362 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 768 transitions. [2022-01-10 12:24:43,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 768 transitions. [2022-01-10 12:24:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 12:24:43,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:43,370 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:43,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:24:43,371 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1563223021, now seen corresponding path program 1 times [2022-01-10 12:24:43,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:43,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917419649] [2022-01-10 12:24:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:43,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:24:43,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:43,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917419649] [2022-01-10 12:24:43,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917419649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:43,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:43,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:24:43,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767630866] [2022-01-10 12:24:43,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:43,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:24:43,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:24:43,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:43,460 INFO L87 Difference]: Start difference. First operand 592 states and 768 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:43,506 INFO L93 Difference]: Finished difference Result 592 states and 768 transitions. [2022-01-10 12:24:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:24:43,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 12:24:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:43,508 INFO L225 Difference]: With dead ends: 592 [2022-01-10 12:24:43,508 INFO L226 Difference]: Without dead ends: 258 [2022-01-10 12:24:43,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:43,515 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 71 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:43,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 108 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-10 12:24:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2022-01-10 12:24:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.3229571984435797) internal successors, (340), 257 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 340 transitions. [2022-01-10 12:24:43,550 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 340 transitions. Word has length 43 [2022-01-10 12:24:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:43,554 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 340 transitions. [2022-01-10 12:24:43,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 340 transitions. [2022-01-10 12:24:43,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 12:24:43,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:43,558 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:24:43,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:24:43,558 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:43,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash 344898578, now seen corresponding path program 1 times [2022-01-10 12:24:43,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:43,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785786507] [2022-01-10 12:24:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:43,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:24:43,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:43,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785786507] [2022-01-10 12:24:43,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785786507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:43,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:43,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:24:43,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174653876] [2022-01-10 12:24:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:43,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:24:43,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:24:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:24:43,651 INFO L87 Difference]: Start difference. First operand 258 states and 340 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:43,822 INFO L93 Difference]: Finished difference Result 1036 states and 1362 transitions. [2022-01-10 12:24:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:24:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 50 [2022-01-10 12:24:43,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:43,825 INFO L225 Difference]: With dead ends: 1036 [2022-01-10 12:24:43,826 INFO L226 Difference]: Without dead ends: 786 [2022-01-10 12:24:43,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:24:43,840 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 443 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:43,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 641 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:24:43,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-01-10 12:24:43,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 373. [2022-01-10 12:24:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.3064516129032258) internal successors, (486), 372 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 486 transitions. [2022-01-10 12:24:43,876 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 486 transitions. Word has length 50 [2022-01-10 12:24:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:43,876 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 486 transitions. [2022-01-10 12:24:43,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 486 transitions. [2022-01-10 12:24:43,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:24:43,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:43,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:43,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:24:43,877 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1271650136, now seen corresponding path program 1 times [2022-01-10 12:24:43,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:43,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931640755] [2022-01-10 12:24:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:43,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 12:24:43,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:43,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931640755] [2022-01-10 12:24:43,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931640755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:43,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:43,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:24:43,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020353487] [2022-01-10 12:24:43,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:43,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:24:43,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:43,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:24:43,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:24:43,988 INFO L87 Difference]: Start difference. First operand 373 states and 486 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:44,075 INFO L93 Difference]: Finished difference Result 914 states and 1186 transitions. [2022-01-10 12:24:44,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:24:44,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 12:24:44,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:44,077 INFO L225 Difference]: With dead ends: 914 [2022-01-10 12:24:44,077 INFO L226 Difference]: Without dead ends: 549 [2022-01-10 12:24:44,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:24:44,078 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 197 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:44,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 411 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-10 12:24:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 317. [2022-01-10 12:24:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.2974683544303798) internal successors, (410), 316 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 410 transitions. [2022-01-10 12:24:44,102 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 410 transitions. Word has length 52 [2022-01-10 12:24:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:44,103 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 410 transitions. [2022-01-10 12:24:44,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 410 transitions. [2022-01-10 12:24:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:24:44,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:44,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:44,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:24:44,105 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2089950201, now seen corresponding path program 1 times [2022-01-10 12:24:44,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507014670] [2022-01-10 12:24:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:44,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:24:44,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:44,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507014670] [2022-01-10 12:24:44,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507014670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:44,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:44,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:24:44,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586118486] [2022-01-10 12:24:44,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:44,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:24:44,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:24:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:24:44,180 INFO L87 Difference]: Start difference. First operand 317 states and 410 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:44,256 INFO L93 Difference]: Finished difference Result 858 states and 1102 transitions. [2022-01-10 12:24:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:24:44,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 12:24:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:44,258 INFO L225 Difference]: With dead ends: 858 [2022-01-10 12:24:44,258 INFO L226 Difference]: Without dead ends: 549 [2022-01-10 12:24:44,260 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 [2022-01-10 12:24:44,261 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 174 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 489 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 [2022-01-10 12:24:44,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 489 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-10 12:24:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 329. [2022-01-10 12:24:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.2865853658536586) internal successors, (422), 328 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 422 transitions. [2022-01-10 12:24:44,290 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 422 transitions. Word has length 76 [2022-01-10 12:24:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:44,291 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 422 transitions. [2022-01-10 12:24:44,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 422 transitions. [2022-01-10 12:24:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:24:44,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:44,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:44,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:24:44,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1964476966, now seen corresponding path program 1 times [2022-01-10 12:24:44,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:44,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739930427] [2022-01-10 12:24:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:44,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:24:44,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:44,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739930427] [2022-01-10 12:24:44,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739930427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:44,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:44,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:24:44,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007818061] [2022-01-10 12:24:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:44,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:24:44,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:44,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:24:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:24:44,354 INFO L87 Difference]: Start difference. First operand 329 states and 422 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:44,419 INFO L93 Difference]: Finished difference Result 894 states and 1138 transitions. [2022-01-10 12:24:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:24:44,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 12:24:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:44,421 INFO L225 Difference]: With dead ends: 894 [2022-01-10 12:24:44,421 INFO L226 Difference]: Without dead ends: 573 [2022-01-10 12:24:44,421 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 [2022-01-10 12:24:44,422 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 147 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:44,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 361 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-10 12:24:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 337. [2022-01-10 12:24:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.2797619047619047) internal successors, (430), 336 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 430 transitions. [2022-01-10 12:24:44,473 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 430 transitions. Word has length 76 [2022-01-10 12:24:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:44,474 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 430 transitions. [2022-01-10 12:24:44,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 430 transitions. [2022-01-10 12:24:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:24:44,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:44,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:44,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:24:44,475 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1561320315, now seen corresponding path program 1 times [2022-01-10 12:24:44,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:44,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562687510] [2022-01-10 12:24:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:44,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 12:24:44,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:44,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562687510] [2022-01-10 12:24:44,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562687510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:44,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:44,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:24:44,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052748914] [2022-01-10 12:24:44,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:44,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:24:44,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:44,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:24:44,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:24:44,524 INFO L87 Difference]: Start difference. First operand 337 states and 430 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:44,697 INFO L93 Difference]: Finished difference Result 1189 states and 1511 transitions. [2022-01-10 12:24:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:24:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 12:24:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:44,700 INFO L225 Difference]: With dead ends: 1189 [2022-01-10 12:24:44,700 INFO L226 Difference]: Without dead ends: 860 [2022-01-10 12:24:44,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:24:44,701 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 394 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:44,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 1371 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:24:44,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-01-10 12:24:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 297. [2022-01-10 12:24:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.2635135135135136) internal successors, (374), 296 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 374 transitions. [2022-01-10 12:24:44,728 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 374 transitions. Word has length 76 [2022-01-10 12:24:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:44,728 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 374 transitions. [2022-01-10 12:24:44,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 374 transitions. [2022-01-10 12:24:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:24:44,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:44,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-01-10 12:24:44,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:24:44,733 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash -996259918, now seen corresponding path program 1 times [2022-01-10 12:24:44,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:44,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134466531] [2022-01-10 12:24:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:44,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 12:24:44,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:44,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134466531] [2022-01-10 12:24:44,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134466531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:44,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:44,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:24:44,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801739204] [2022-01-10 12:24:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:44,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:24:44,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:24:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:24:44,782 INFO L87 Difference]: Start difference. First operand 297 states and 374 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:44,863 INFO L93 Difference]: Finished difference Result 972 states and 1223 transitions. [2022-01-10 12:24:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:24:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 105 [2022-01-10 12:24:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:44,865 INFO L225 Difference]: With dead ends: 972 [2022-01-10 12:24:44,866 INFO L226 Difference]: Without dead ends: 683 [2022-01-10 12:24:44,866 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 [2022-01-10 12:24:44,867 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 274 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:44,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 587 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:44,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-10 12:24:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 303. [2022-01-10 12:24:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.2582781456953642) internal successors, (380), 302 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 380 transitions. [2022-01-10 12:24:44,928 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 380 transitions. Word has length 105 [2022-01-10 12:24:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:44,928 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 380 transitions. [2022-01-10 12:24:44,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 380 transitions. [2022-01-10 12:24:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:24:44,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:44,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-01-10 12:24:44,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:24:44,930 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:44,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:44,930 INFO L85 PathProgramCache]: Analyzing trace with hash -179783888, now seen corresponding path program 1 times [2022-01-10 12:24:44,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:44,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487202183] [2022-01-10 12:24:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:44,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 12:24:45,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:45,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487202183] [2022-01-10 12:24:45,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487202183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:45,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:45,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:24:45,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892017503] [2022-01-10 12:24:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:45,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:24:45,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:24:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:24:45,051 INFO L87 Difference]: Start difference. First operand 303 states and 380 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:45,334 INFO L93 Difference]: Finished difference Result 1349 states and 1693 transitions. [2022-01-10 12:24:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:24:45,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 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 105 [2022-01-10 12:24:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:45,337 INFO L225 Difference]: With dead ends: 1349 [2022-01-10 12:24:45,337 INFO L226 Difference]: Without dead ends: 1054 [2022-01-10 12:24:45,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:24:45,338 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 641 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:45,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 1061 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:24:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-01-10 12:24:45,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 466. [2022-01-10 12:24:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.2365591397849462) internal successors, (575), 465 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 575 transitions. [2022-01-10 12:24:45,388 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 575 transitions. Word has length 105 [2022-01-10 12:24:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:45,388 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 575 transitions. [2022-01-10 12:24:45,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 575 transitions. [2022-01-10 12:24:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:24:45,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:45,389 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:45,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:24:45,389 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash -588608113, now seen corresponding path program 1 times [2022-01-10 12:24:45,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957323043] [2022-01-10 12:24:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:45,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 12:24:45,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:45,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957323043] [2022-01-10 12:24:45,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957323043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:24:45,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:24:45,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:24:45,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529493466] [2022-01-10 12:24:45,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:24:45,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:24:45,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:24:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:45,484 INFO L87 Difference]: Start difference. First operand 466 states and 575 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:45,546 INFO L93 Difference]: Finished difference Result 1038 states and 1282 transitions. [2022-01-10 12:24:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:24:45,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-01-10 12:24:45,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:45,548 INFO L225 Difference]: With dead ends: 1038 [2022-01-10 12:24:45,548 INFO L226 Difference]: Without dead ends: 580 [2022-01-10 12:24:45,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:24:45,549 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 29 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:45,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 168 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-01-10 12:24:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 466. [2022-01-10 12:24:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.2365591397849462) internal successors, (575), 465 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 575 transitions. [2022-01-10 12:24:45,591 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 575 transitions. Word has length 105 [2022-01-10 12:24:45,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:45,592 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 575 transitions. [2022-01-10 12:24:45,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:45,592 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 575 transitions. [2022-01-10 12:24:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 12:24:45,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:24:45,609 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:24:45,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:24:45,609 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:24:45,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:24:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1186496905, now seen corresponding path program 1 times [2022-01-10 12:24:45,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:24:45,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477694525] [2022-01-10 12:24:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:45,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:24:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 12:24:45,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:24:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477694525] [2022-01-10 12:24:45,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477694525] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:24:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825844492] [2022-01-10 12:24:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:24:45,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:24:45,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:24:45,720 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) [2022-01-10 12:24:45,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:24:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:24:45,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 12:24:45,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:24:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 12:24:46,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:24:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 12:24:46,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825844492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:24:46,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:24:46,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 9 [2022-01-10 12:24:46,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512042853] [2022-01-10 12:24:46,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:24:46,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:24:46,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:24:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:24:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:24:46,549 INFO L87 Difference]: Start difference. First operand 466 states and 575 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:24:46,754 INFO L93 Difference]: Finished difference Result 1170 states and 1445 transitions. [2022-01-10 12:24:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:24:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 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 107 [2022-01-10 12:24:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:24:46,755 INFO L225 Difference]: With dead ends: 1170 [2022-01-10 12:24:46,755 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:24:46,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 205 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:24:46,757 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 403 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:24:46,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 718 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:24:46,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:24:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:24:46,757 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) [2022-01-10 12:24:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:24:46,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2022-01-10 12:24:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:24:46,758 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:24:46,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:24:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:24:46,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:24:46,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 12:24:46,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 12:24:46,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 12:24:46,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:24:46,973 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,SelfDestructingSolverStorable13 [2022-01-10 12:24:46,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:24:54,373 WARN L228 SmtUtils]: Spent 7.38s on a formula simplification that was a NOOP. DAG size: 240 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:25:08,629 WARN L228 SmtUtils]: Spent 13.77s on a formula simplification that was a NOOP. DAG size: 181 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:25:18,040 WARN L228 SmtUtils]: Spent 9.41s on a formula simplification that was a NOOP. DAG size: 160 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:25:27,961 WARN L228 SmtUtils]: Spent 9.92s on a formula simplification that was a NOOP. DAG size: 191 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:25:55,442 WARN L228 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 170 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)