/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:57:35,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:57:35,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:57:35,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:57:35,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:57:35,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:57:35,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:57:35,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:57:35,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:57:35,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:57:35,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:57:35,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:57:35,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:57:35,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:57:35,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:57:35,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:57:35,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:57:35,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:57:35,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:57:35,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:57:35,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:57:35,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:57:35,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:57:35,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:57:35,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:57:35,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:57:35,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:57:35,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:57:35,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:57:35,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:57:35,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:57:35,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:57:35,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:57:35,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:57:35,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:57:35,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:57:35,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:57:35,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:57:35,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:57:35,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:57:35,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:57:35,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:57:35,388 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:57:35,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:57:35,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:57:35,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:57:35,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:57:35,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:57:35,389 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:57:35,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:57:35,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:57:35,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:57:35,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:57:35,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:57:35,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:57:35,392 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:57:35,392 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:57:35,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:57:35,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:57:35,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:57:35,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:57:35,566 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:57:35,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2022-01-10 17:57:35,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac15dd56d/c1e494d122024957b91b0ca80adc987d/FLAGf187186bb [2022-01-10 17:57:36,087 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:57:36,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2022-01-10 17:57:36,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac15dd56d/c1e494d122024957b91b0ca80adc987d/FLAGf187186bb [2022-01-10 17:57:36,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac15dd56d/c1e494d122024957b91b0ca80adc987d [2022-01-10 17:57:36,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:57:36,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:57:36,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:57:36,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:57:36,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:57:36,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:36,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d052e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36, skipping insertion in model container [2022-01-10 17:57:36,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:36,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:57:36,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:57:36,339 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/elevator_spec3_product22.cil.c[3205,3218] [2022-01-10 17:57:36,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:57:36,531 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:57:36,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:57:36,558 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/elevator_spec3_product22.cil.c[3205,3218] [2022-01-10 17:57:36,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:57:36,646 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:57:36,663 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/elevator_spec3_product22.cil.c[3205,3218] [2022-01-10 17:57:36,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:57:36,733 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:57:36,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36 WrapperNode [2022-01-10 17:57:36,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:57:36,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:57:36,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:57:36,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:57:36,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:36,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:37,264 INFO L137 Inliner]: procedures = 94, calls = 351, calls flagged for inlining = 203, calls inlined = 1788, statements flattened = 63416 [2022-01-10 17:57:37,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:57:37,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:57:37,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:57:37,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:57:37,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:37,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:37,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:37,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:37,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:38,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:38,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:38,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:57:38,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:57:38,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:57:38,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:57:38,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (1/1) ... [2022-01-10 17:57:38,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:57:38,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:57:38,257 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 17:57:38,263 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 17:57:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:57:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:57:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:57:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:57:38,592 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:57:38,593 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:57:55,858 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:57:55,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:57:55,937 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:57:55,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:55 BoogieIcfgContainer [2022-01-10 17:57:55,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:57:55,954 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:57:55,954 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:57:55,956 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:57:55,958 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:55" (1/1) ... [2022-01-10 17:57:58,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:57:58 BasicIcfg [2022-01-10 17:57:58,405 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:57:58,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:57:58,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:57:58,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:57:58,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:57:36" (1/4) ... [2022-01-10 17:57:58,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d273f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:57:58, skipping insertion in model container [2022-01-10 17:57:58,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:57:36" (2/4) ... [2022-01-10 17:57:58,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d273f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:57:58, skipping insertion in model container [2022-01-10 17:57:58,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:57:55" (3/4) ... [2022-01-10 17:57:58,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d273f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:57:58, skipping insertion in model container [2022-01-10 17:57:58,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:57:58" (4/4) ... [2022-01-10 17:57:58,411 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.cTransformedIcfg [2022-01-10 17:57:58,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:57:58,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-01-10 17:57:58,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:57:58,499 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 17:57:58,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-01-10 17:57:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 17058 states, 17047 states have (on average 1.882735965272482) internal successors, (32095), 17057 states have internal predecessors, (32095), 0 states have call successors, (0), 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 17:57:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 17:57:58,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:58,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:57:58,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:57:58,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2032372578, now seen corresponding path program 1 times [2022-01-10 17:57:58,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:58,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851009843] [2022-01-10 17:57:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:58,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:59,112 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 17:57:59,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:59,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851009843] [2022-01-10 17:57:59,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851009843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:59,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:59,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:57:59,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397660755] [2022-01-10 17:57:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:59,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:57:59,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:59,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:57:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:57:59,201 INFO L87 Difference]: Start difference. First operand has 17058 states, 17047 states have (on average 1.882735965272482) internal successors, (32095), 17057 states have internal predecessors, (32095), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 17:58:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:01,299 INFO L93 Difference]: Finished difference Result 68021 states and 128013 transitions. [2022-01-10 17:58:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:58:01,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-01-10 17:58:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:01,539 INFO L225 Difference]: With dead ends: 68021 [2022-01-10 17:58:01,539 INFO L226 Difference]: Without dead ends: 50969 [2022-01-10 17:58:01,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:58:01,584 INFO L933 BasicCegarLoop]: 63966 mSDtfsCounter, 95800 mSDsluCounter, 95979 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95800 SdHoareTripleChecker+Valid, 159945 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:01,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95800 Valid, 159945 Invalid, 77 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:58:01,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50969 states. [2022-01-10 17:58:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50969 to 17051. [2022-01-10 17:58:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17051 states, 17041 states have (on average 1.8821078575200987) internal successors, (32073), 17050 states have internal predecessors, (32073), 0 states have call successors, (0), 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 17:58:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17051 states to 17051 states and 32073 transitions. [2022-01-10 17:58:02,363 INFO L78 Accepts]: Start accepts. Automaton has 17051 states and 32073 transitions. Word has length 34 [2022-01-10 17:58:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:02,363 INFO L470 AbstractCegarLoop]: Abstraction has 17051 states and 32073 transitions. [2022-01-10 17:58:02,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 17:58:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 17051 states and 32073 transitions. [2022-01-10 17:58:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 17:58:02,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:02,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:02,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:58:02,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:02,367 INFO L85 PathProgramCache]: Analyzing trace with hash -47972167, now seen corresponding path program 1 times [2022-01-10 17:58:02,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:02,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240715323] [2022-01-10 17:58:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:02,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:02,488 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 17:58:02,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:02,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240715323] [2022-01-10 17:58:02,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240715323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:02,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:02,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:58:02,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798823848] [2022-01-10 17:58:02,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:02,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:58:02,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:58:02,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:58:02,496 INFO L87 Difference]: Start difference. First operand 17051 states and 32073 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:03,144 INFO L93 Difference]: Finished difference Result 34019 states and 63996 transitions. [2022-01-10 17:58:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:58:03,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 17:58:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:03,193 INFO L225 Difference]: With dead ends: 34019 [2022-01-10 17:58:03,193 INFO L226 Difference]: Without dead ends: 16983 [2022-01-10 17:58:03,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:58:03,224 INFO L933 BasicCegarLoop]: 31935 mSDtfsCounter, 31927 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31927 SdHoareTripleChecker+Valid, 31943 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:03,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31927 Valid, 31943 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:58:03,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2022-01-10 17:58:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16983. [2022-01-10 17:58:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16983 states, 16973 states have (on average 1.8816355387969128) internal successors, (31937), 16982 states have internal predecessors, (31937), 0 states have call successors, (0), 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 17:58:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16983 states to 16983 states and 31937 transitions. [2022-01-10 17:58:03,751 INFO L78 Accepts]: Start accepts. Automaton has 16983 states and 31937 transitions. Word has length 35 [2022-01-10 17:58:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:03,752 INFO L470 AbstractCegarLoop]: Abstraction has 16983 states and 31937 transitions. [2022-01-10 17:58:03,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16983 states and 31937 transitions. [2022-01-10 17:58:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 17:58:03,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:03,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:03,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:58:03,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash 348565537, now seen corresponding path program 1 times [2022-01-10 17:58:03,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:03,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363279402] [2022-01-10 17:58:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:03,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:03,915 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 17:58:03,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:03,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363279402] [2022-01-10 17:58:03,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363279402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:03,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:03,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:58:03,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708959336] [2022-01-10 17:58:03,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:03,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:58:03,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:58:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:58:03,918 INFO L87 Difference]: Start difference. First operand 16983 states and 31937 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 17:58:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:04,683 INFO L93 Difference]: Finished difference Result 33944 states and 63845 transitions. [2022-01-10 17:58:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:58:04,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 17:58:04,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:04,722 INFO L225 Difference]: With dead ends: 33944 [2022-01-10 17:58:04,723 INFO L226 Difference]: Without dead ends: 16983 [2022-01-10 17:58:04,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 17:58:04,753 INFO L933 BasicCegarLoop]: 31921 mSDtfsCounter, 127677 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127677 SdHoareTripleChecker+Valid, 31949 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:04,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127677 Valid, 31949 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:58:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2022-01-10 17:58:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16983. [2022-01-10 17:58:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16983 states, 16973 states have (on average 1.8815177045896423) internal successors, (31935), 16982 states have internal predecessors, (31935), 0 states have call successors, (0), 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 17:58:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16983 states to 16983 states and 31935 transitions. [2022-01-10 17:58:05,262 INFO L78 Accepts]: Start accepts. Automaton has 16983 states and 31935 transitions. Word has length 37 [2022-01-10 17:58:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:05,262 INFO L470 AbstractCegarLoop]: Abstraction has 16983 states and 31935 transitions. [2022-01-10 17:58:05,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 17:58:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16983 states and 31935 transitions. [2022-01-10 17:58:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 17:58:05,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:05,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:05,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:58:05,266 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:05,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash -283543097, now seen corresponding path program 1 times [2022-01-10 17:58:05,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:05,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248805858] [2022-01-10 17:58:05,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:05,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:05,338 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 17:58:05,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:05,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248805858] [2022-01-10 17:58:05,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248805858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:05,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:05,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:58:05,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677311593] [2022-01-10 17:58:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:05,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:58:05,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:58:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:58:05,339 INFO L87 Difference]: Start difference. First operand 16983 states and 31935 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 17:58:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:05,993 INFO L93 Difference]: Finished difference Result 33938 states and 63831 transitions. [2022-01-10 17:58:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:58:05,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-01-10 17:58:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:06,027 INFO L225 Difference]: With dead ends: 33938 [2022-01-10 17:58:06,027 INFO L226 Difference]: Without dead ends: 16983 [2022-01-10 17:58:06,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:58:06,047 INFO L933 BasicCegarLoop]: 31903 mSDtfsCounter, 63822 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63822 SdHoareTripleChecker+Valid, 31946 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:06,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63822 Valid, 31946 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:58:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2022-01-10 17:58:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16983. [2022-01-10 17:58:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16983 states, 16973 states have (on average 1.881399870382372) internal successors, (31933), 16982 states have internal predecessors, (31933), 0 states have call successors, (0), 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 17:58:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16983 states to 16983 states and 31933 transitions. [2022-01-10 17:58:06,474 INFO L78 Accepts]: Start accepts. Automaton has 16983 states and 31933 transitions. Word has length 38 [2022-01-10 17:58:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:06,474 INFO L470 AbstractCegarLoop]: Abstraction has 16983 states and 31933 transitions. [2022-01-10 17:58:06,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 17:58:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 16983 states and 31933 transitions. [2022-01-10 17:58:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 17:58:06,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:06,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:06,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:58:06,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1157704204, now seen corresponding path program 1 times [2022-01-10 17:58:06,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:06,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511315740] [2022-01-10 17:58:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:06,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:06,620 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 17:58:06,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511315740] [2022-01-10 17:58:06,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511315740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:06,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:06,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:58:06,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064469985] [2022-01-10 17:58:06,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:06,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:58:06,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:58:06,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:58:06,622 INFO L87 Difference]: Start difference. First operand 16983 states and 31933 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:07,358 INFO L93 Difference]: Finished difference Result 33938 states and 63828 transitions. [2022-01-10 17:58:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:58:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-10 17:58:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:07,399 INFO L225 Difference]: With dead ends: 33938 [2022-01-10 17:58:07,399 INFO L226 Difference]: Without dead ends: 16983 [2022-01-10 17:58:07,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:58:07,416 INFO L933 BasicCegarLoop]: 31903 mSDtfsCounter, 95727 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95727 SdHoareTripleChecker+Valid, 31946 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:07,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95727 Valid, 31946 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:58:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2022-01-10 17:58:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16983. [2022-01-10 17:58:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16983 states, 16973 states have (on average 1.8812820361751017) internal successors, (31931), 16982 states have internal predecessors, (31931), 0 states have call successors, (0), 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 17:58:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16983 states to 16983 states and 31931 transitions. [2022-01-10 17:58:07,890 INFO L78 Accepts]: Start accepts. Automaton has 16983 states and 31931 transitions. Word has length 39 [2022-01-10 17:58:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:07,892 INFO L470 AbstractCegarLoop]: Abstraction has 16983 states and 31931 transitions. [2022-01-10 17:58:07,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand 16983 states and 31931 transitions. [2022-01-10 17:58:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 17:58:07,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:07,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:07,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:58:07,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1866949946, now seen corresponding path program 1 times [2022-01-10 17:58:07,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:07,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556613536] [2022-01-10 17:58:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:07,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:07,959 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 17:58:07,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:07,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556613536] [2022-01-10 17:58:07,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556613536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:07,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:07,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:58:07,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196746756] [2022-01-10 17:58:07,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:07,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:58:07,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:58:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:58:07,961 INFO L87 Difference]: Start difference. First operand 16983 states and 31931 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 17:58:08,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:08,683 INFO L93 Difference]: Finished difference Result 33938 states and 63825 transitions. [2022-01-10 17:58:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:58:08,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 17:58:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:08,731 INFO L225 Difference]: With dead ends: 33938 [2022-01-10 17:58:08,731 INFO L226 Difference]: Without dead ends: 16983 [2022-01-10 17:58:08,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:58:08,745 INFO L933 BasicCegarLoop]: 31903 mSDtfsCounter, 63812 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63812 SdHoareTripleChecker+Valid, 31956 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:08,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63812 Valid, 31956 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:58:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2022-01-10 17:58:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16983. [2022-01-10 17:58:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16983 states, 16973 states have (on average 1.8811642019678312) internal successors, (31929), 16982 states have internal predecessors, (31929), 0 states have call successors, (0), 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 17:58:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16983 states to 16983 states and 31929 transitions. [2022-01-10 17:58:09,305 INFO L78 Accepts]: Start accepts. Automaton has 16983 states and 31929 transitions. Word has length 40 [2022-01-10 17:58:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:09,305 INFO L470 AbstractCegarLoop]: Abstraction has 16983 states and 31929 transitions. [2022-01-10 17:58:09,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 17:58:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 16983 states and 31929 transitions. [2022-01-10 17:58:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 17:58:09,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:09,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:09,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:58:09,306 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1358983839, now seen corresponding path program 1 times [2022-01-10 17:58:09,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:09,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685871803] [2022-01-10 17:58:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:09,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:09,423 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 17:58:09,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685871803] [2022-01-10 17:58:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685871803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:09,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:58:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685743156] [2022-01-10 17:58:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:09,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:58:09,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:58:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:58:09,425 INFO L87 Difference]: Start difference. First operand 16983 states and 31929 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:10,340 INFO L93 Difference]: Finished difference Result 33938 states and 63822 transitions. [2022-01-10 17:58:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 17:58:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 17:58:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:10,372 INFO L225 Difference]: With dead ends: 33938 [2022-01-10 17:58:10,372 INFO L226 Difference]: Without dead ends: 16983 [2022-01-10 17:58:10,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 17:58:10,388 INFO L933 BasicCegarLoop]: 31903 mSDtfsCounter, 127618 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127618 SdHoareTripleChecker+Valid, 31956 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:10,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127618 Valid, 31956 Invalid, 49 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:58:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2022-01-10 17:58:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16983. [2022-01-10 17:58:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16983 states, 16973 states have (on average 1.881046367760561) internal successors, (31927), 16982 states have internal predecessors, (31927), 0 states have call successors, (0), 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 17:58:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16983 states to 16983 states and 31927 transitions. [2022-01-10 17:58:10,806 INFO L78 Accepts]: Start accepts. Automaton has 16983 states and 31927 transitions. Word has length 41 [2022-01-10 17:58:10,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:10,806 INFO L470 AbstractCegarLoop]: Abstraction has 16983 states and 31927 transitions. [2022-01-10 17:58:10,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 16983 states and 31927 transitions. [2022-01-10 17:58:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 17:58:10,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:10,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:10,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:58:10,807 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1772156077, now seen corresponding path program 1 times [2022-01-10 17:58:10,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:10,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777250303] [2022-01-10 17:58:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:10,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:10,871 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 17:58:10,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777250303] [2022-01-10 17:58:10,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777250303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:10,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:10,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:58:10,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111655575] [2022-01-10 17:58:10,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:10,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:58:10,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:10,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:58:10,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:58:10,872 INFO L87 Difference]: Start difference. First operand 16983 states and 31927 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:17,844 INFO L93 Difference]: Finished difference Result 141414 states and 265875 transitions. [2022-01-10 17:58:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:58:17,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-10 17:58:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:18,140 INFO L225 Difference]: With dead ends: 141414 [2022-01-10 17:58:18,141 INFO L226 Difference]: Without dead ends: 124545 [2022-01-10 17:58:18,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:58:18,170 INFO L933 BasicCegarLoop]: 66383 mSDtfsCounter, 215828 mSDsluCounter, 184240 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215828 SdHoareTripleChecker+Valid, 250623 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:18,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215828 Valid, 250623 Invalid, 3247 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [656 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 17:58:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124545 states. [2022-01-10 17:58:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124545 to 31636. [2022-01-10 17:58:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31636 states, 31626 states have (on average 1.876652121672042) internal successors, (59351), 31635 states have internal predecessors, (59351), 0 states have call successors, (0), 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 17:58:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31636 states to 31636 states and 59351 transitions. [2022-01-10 17:58:20,152 INFO L78 Accepts]: Start accepts. Automaton has 31636 states and 59351 transitions. Word has length 42 [2022-01-10 17:58:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:20,152 INFO L470 AbstractCegarLoop]: Abstraction has 31636 states and 59351 transitions. [2022-01-10 17:58:20,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 31636 states and 59351 transitions. [2022-01-10 17:58:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 17:58:20,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:20,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:20,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:58:20,153 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash -91371276, now seen corresponding path program 1 times [2022-01-10 17:58:20,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:20,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817380997] [2022-01-10 17:58:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:20,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:20,192 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 17:58:20,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:20,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817380997] [2022-01-10 17:58:20,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817380997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:20,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:20,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:58:20,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860128466] [2022-01-10 17:58:20,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:20,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:58:20,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:58:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:58:20,193 INFO L87 Difference]: Start difference. First operand 31636 states and 59351 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:22,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:22,329 INFO L93 Difference]: Finished difference Result 89490 states and 167987 transitions. [2022-01-10 17:58:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:58:22,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-10 17:58:22,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:22,436 INFO L225 Difference]: With dead ends: 89490 [2022-01-10 17:58:22,436 INFO L226 Difference]: Without dead ends: 62416 [2022-01-10 17:58:22,465 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 17:58:22,466 INFO L933 BasicCegarLoop]: 32097 mSDtfsCounter, 31052 mSDsluCounter, 31803 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31052 SdHoareTripleChecker+Valid, 63900 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:22,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31052 Valid, 63900 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:58:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62416 states. [2022-01-10 17:58:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62416 to 62284. [2022-01-10 17:58:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62284 states, 62274 states have (on average 1.8785207309631629) internal successors, (116983), 62283 states have internal predecessors, (116983), 0 states have call successors, (0), 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 17:58:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62284 states to 62284 states and 116983 transitions. [2022-01-10 17:58:24,976 INFO L78 Accepts]: Start accepts. Automaton has 62284 states and 116983 transitions. Word has length 42 [2022-01-10 17:58:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:58:24,977 INFO L470 AbstractCegarLoop]: Abstraction has 62284 states and 116983 transitions. [2022-01-10 17:58:24,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:58:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 62284 states and 116983 transitions. [2022-01-10 17:58:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 17:58:24,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:58:24,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:58:24,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:58:24,978 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 17:58:24,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:58:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1778759303, now seen corresponding path program 1 times [2022-01-10 17:58:24,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:58:24,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279694975] [2022-01-10 17:58:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:58:24,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:58:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:58:25,022 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 17:58:25,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:58:25,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279694975] [2022-01-10 17:58:25,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279694975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:58:25,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:58:25,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:58:25,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438466145] [2022-01-10 17:58:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:58:25,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:58:25,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:58:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:58:25,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:58:25,023 INFO L87 Difference]: Start difference. First operand 62284 states and 116983 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 17:58:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:58:28,311 INFO L93 Difference]: Finished difference Result 146338 states and 274891 transitions. [2022-01-10 17:58:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:58:28,311 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 17:58:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:58:28,481 INFO L225 Difference]: With dead ends: 146338 [2022-01-10 17:58:28,481 INFO L226 Difference]: Without dead ends: 93064 [2022-01-10 17:58:28,520 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 17:58:28,521 INFO L933 BasicCegarLoop]: 62841 mSDtfsCounter, 31780 mSDsluCounter, 31067 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31780 SdHoareTripleChecker+Valid, 93908 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:58:28,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31780 Valid, 93908 Invalid, 96 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:58:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93064 states.