/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:02:17,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:02:17,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:02:17,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:02:17,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:02:17,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:02:17,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:02:17,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:02:17,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:02:17,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:02:17,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:02:17,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:02:17,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:02:17,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:02:17,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:02:17,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:02:17,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:02:17,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:02:17,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:02:17,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:02:17,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:02:17,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:02:17,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:02:17,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:02:17,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:02:17,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:02:17,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:02:17,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:02:17,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:02:17,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:02:17,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:02:17,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:02:17,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:02:17,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:02:17,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:02:17,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:02:17,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:02:17,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:02:17,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:02:17,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:02:17,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:02:17,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:02:17,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:02:17,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:02:17,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:02:17,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:02:17,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:02:17,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:02:17,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:02:17,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:02:17,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:02:17,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:02:17,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:02:17,424 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:02:17,424 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:02:17,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:02:17,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:02:17,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:02:17,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:02:17,614 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:02:17,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2022-01-10 12:02:17,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ec1eeeb/4d4ebe5cc1e04544a8d3b1f7f147dfb7/FLAG0fd57b1e4 [2022-01-10 12:02:18,300 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:02:18,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2022-01-10 12:02:18,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ec1eeeb/4d4ebe5cc1e04544a8d3b1f7f147dfb7/FLAG0fd57b1e4 [2022-01-10 12:02:18,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ec1eeeb/4d4ebe5cc1e04544a8d3b1f7f147dfb7 [2022-01-10 12:02:18,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:02:18,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:02:18,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:02:18,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:02:18,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:02:18,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:02:18" (1/1) ... [2022-01-10 12:02:18,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e38c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:18, skipping insertion in model container [2022-01-10 12:02:18,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:02:18" (1/1) ... [2022-01-10 12:02:18,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:02:18,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:02:18,722 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_spec13_product22.cil.c[1811,1824] [2022-01-10 12:02:18,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:02:19,008 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:02:19,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:02:19,023 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_spec13_product22.cil.c[1811,1824] [2022-01-10 12:02:19,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:02:19,137 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:02:19,145 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_spec13_product22.cil.c[1811,1824] [2022-01-10 12:02:19,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:02:19,271 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:02:19,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19 WrapperNode [2022-01-10 12:02:19,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:02:19,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:02:19,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:02:19,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:02:19,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:19,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:19,728 INFO L137 Inliner]: procedures = 94, calls = 344, calls flagged for inlining = 196, calls inlined = 1755, statements flattened = 63923 [2022-01-10 12:02:19,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:02:19,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:02:19,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:02:19,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:02:19,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:19,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:20,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:20,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:20,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:20,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:20,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:20,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:02:20,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:02:20,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:02:20,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:02:20,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (1/1) ... [2022-01-10 12:02:20,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:02:20,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:02:20,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:02:20,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:02:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:02:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:02:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:02:20,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:02:21,164 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:02:21,165 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:02:39,037 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:02:39,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:02:39,211 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2022-01-10 12:02:39,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:02:39 BoogieIcfgContainer [2022-01-10 12:02:39,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:02:39,227 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:02:39,227 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:02:39,228 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:02:39,230 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:02:39" (1/1) ... [2022-01-10 12:02:41,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:02:41 BasicIcfg [2022-01-10 12:02:41,866 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:02:41,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:02:41,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:02:41,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:02:41,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:02:18" (1/4) ... [2022-01-10 12:02:41,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677ac651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:02:41, skipping insertion in model container [2022-01-10 12:02:41,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:02:19" (2/4) ... [2022-01-10 12:02:41,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677ac651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:02:41, skipping insertion in model container [2022-01-10 12:02:41,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:02:39" (3/4) ... [2022-01-10 12:02:41,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677ac651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:02:41, skipping insertion in model container [2022-01-10 12:02:41,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:02:41" (4/4) ... [2022-01-10 12:02:41,873 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.cTransformedIcfg [2022-01-10 12:02:41,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:02:41,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-01-10 12:02:41,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:02:41,947 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:02:41,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-01-10 12:02:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 17402 states, 17391 states have (on average 1.8845954804209073) internal successors, (32775), 17401 states have internal predecessors, (32775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 12:02:42,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:42,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:42,152 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 12:02:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 113257423, now seen corresponding path program 1 times [2022-01-10 12:02:42,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:42,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028041252] [2022-01-10 12:02:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:42,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:42,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:42,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028041252] [2022-01-10 12:02:42,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028041252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:42,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:42,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:02:42,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134038690] [2022-01-10 12:02:42,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:42,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:02:42,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:02:42,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:42,579 INFO L87 Difference]: Start difference. First operand has 17402 states, 17391 states have (on average 1.8845954804209073) internal successors, (32775), 17401 states have internal predecessors, (32775), 0 states have call successors, (0), 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 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:43,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:43,470 INFO L93 Difference]: Finished difference Result 41752 states and 78648 transitions. [2022-01-10 12:02:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:02:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 12:02:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:43,633 INFO L225 Difference]: With dead ends: 41752 [2022-01-10 12:02:43,634 INFO L226 Difference]: Without dead ends: 24349 [2022-01-10 12:02:43,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:43,669 INFO L933 BasicCegarLoop]: 45673 mSDtfsCounter, 32619 mSDsluCounter, 13081 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32619 SdHoareTripleChecker+Valid, 58754 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:43,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32619 Valid, 58754 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:02:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24349 states. [2022-01-10 12:02:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24349 to 17385. [2022-01-10 12:02:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8774676258992806) internal successors, (32621), 17384 states have internal predecessors, (32621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32621 transitions. [2022-01-10 12:02:44,416 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32621 transitions. Word has length 46 [2022-01-10 12:02:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:44,417 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32621 transitions. [2022-01-10 12:02:44,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32621 transitions. [2022-01-10 12:02:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 12:02:44,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:44,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:44,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:02:44,423 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 12:02:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1803684060, now seen corresponding path program 1 times [2022-01-10 12:02:44,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:44,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4205633] [2022-01-10 12:02:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:44,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:44,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:44,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4205633] [2022-01-10 12:02:44,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4205633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:44,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:44,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:02:44,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135856559] [2022-01-10 12:02:44,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:44,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:02:44,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:02:44,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:44,535 INFO L87 Difference]: Start difference. First operand 17385 states and 32621 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:45,376 INFO L93 Difference]: Finished difference Result 41649 states and 78147 transitions. [2022-01-10 12:02:45,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:02:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-10 12:02:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:45,440 INFO L225 Difference]: With dead ends: 41649 [2022-01-10 12:02:45,441 INFO L226 Difference]: Without dead ends: 24313 [2022-01-10 12:02:45,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:45,462 INFO L933 BasicCegarLoop]: 45445 mSDtfsCounter, 32569 mSDsluCounter, 13022 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32569 SdHoareTripleChecker+Valid, 58467 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:45,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32569 Valid, 58467 Invalid, 181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:02:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24313 states. [2022-01-10 12:02:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24313 to 17385. [2022-01-10 12:02:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8768920863309353) internal successors, (32611), 17384 states have internal predecessors, (32611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32611 transitions. [2022-01-10 12:02:45,887 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32611 transitions. Word has length 48 [2022-01-10 12:02:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:45,887 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32611 transitions. [2022-01-10 12:02:45,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32611 transitions. [2022-01-10 12:02:45,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 12:02:45,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:45,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:45,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:02:45,890 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 12:02:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:45,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1383026289, now seen corresponding path program 1 times [2022-01-10 12:02:45,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:45,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425610682] [2022-01-10 12:02:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:45,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:45,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425610682] [2022-01-10 12:02:45,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425610682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:45,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:45,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:02:45,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989279290] [2022-01-10 12:02:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:45,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:02:45,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:02:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:45,932 INFO L87 Difference]: Start difference. First operand 17385 states and 32611 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:46,420 INFO L93 Difference]: Finished difference Result 41715 states and 78258 transitions. [2022-01-10 12:02:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:02:46,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-10 12:02:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:46,464 INFO L225 Difference]: With dead ends: 41715 [2022-01-10 12:02:46,464 INFO L226 Difference]: Without dead ends: 24394 [2022-01-10 12:02:46,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:46,483 INFO L933 BasicCegarLoop]: 45745 mSDtfsCounter, 32577 mSDsluCounter, 13150 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32577 SdHoareTripleChecker+Valid, 58895 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:46,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32577 Valid, 58895 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:02:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24394 states. [2022-01-10 12:02:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24394 to 17385. [2022-01-10 12:02:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8768345323741007) internal successors, (32610), 17384 states have internal predecessors, (32610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32610 transitions. [2022-01-10 12:02:46,913 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32610 transitions. Word has length 50 [2022-01-10 12:02:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:46,913 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32610 transitions. [2022-01-10 12:02:46,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32610 transitions. [2022-01-10 12:02:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 12:02:46,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:46,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:46,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:02:46,916 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 12:02:46,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1726869313, now seen corresponding path program 1 times [2022-01-10 12:02:46,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012481860] [2022-01-10 12:02:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:46,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:46,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:46,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012481860] [2022-01-10 12:02:46,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012481860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:46,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:46,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:02:46,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032253197] [2022-01-10 12:02:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:46,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:02:46,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:02:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:46,990 INFO L87 Difference]: Start difference. First operand 17385 states and 32610 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:47,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:47,628 INFO L93 Difference]: Finished difference Result 41614 states and 78065 transitions. [2022-01-10 12:02:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:02:47,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 12:02:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:47,676 INFO L225 Difference]: With dead ends: 41614 [2022-01-10 12:02:47,676 INFO L226 Difference]: Without dead ends: 24329 [2022-01-10 12:02:47,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:47,706 INFO L933 BasicCegarLoop]: 45574 mSDtfsCounter, 32447 mSDsluCounter, 13056 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32447 SdHoareTripleChecker+Valid, 58630 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:47,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32447 Valid, 58630 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:02:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24329 states. [2022-01-10 12:02:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24329 to 17385. [2022-01-10 12:02:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17385 states, 17375 states have (on average 1.8765467625899281) internal successors, (32605), 17384 states have internal predecessors, (32605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 32605 transitions. [2022-01-10 12:02:48,169 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 32605 transitions. Word has length 51 [2022-01-10 12:02:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:48,171 INFO L470 AbstractCegarLoop]: Abstraction has 17385 states and 32605 transitions. [2022-01-10 12:02:48,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 32605 transitions. [2022-01-10 12:02:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:02:48,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:48,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:48,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:02:48,174 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 12:02:48,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:48,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1720940506, now seen corresponding path program 1 times [2022-01-10 12:02:48,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:48,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238648206] [2022-01-10 12:02:48,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:48,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:48,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:48,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238648206] [2022-01-10 12:02:48,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238648206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:48,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:48,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:02:48,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735877386] [2022-01-10 12:02:48,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:48,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:02:48,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:48,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:02:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:48,269 INFO L87 Difference]: Start difference. First operand 17385 states and 32605 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:49,087 INFO L93 Difference]: Finished difference Result 44474 states and 83494 transitions. [2022-01-10 12:02:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:02:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 12:02:49,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:49,154 INFO L225 Difference]: With dead ends: 44474 [2022-01-10 12:02:49,154 INFO L226 Difference]: Without dead ends: 30556 [2022-01-10 12:02:49,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:02:49,180 INFO L933 BasicCegarLoop]: 57353 mSDtfsCounter, 25669 mSDsluCounter, 31630 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25669 SdHoareTripleChecker+Valid, 88983 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:49,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25669 Valid, 88983 Invalid, 102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:02:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30556 states. [2022-01-10 12:02:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30556 to 17255. [2022-01-10 12:02:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17255 states, 17245 states have (on average 1.8756161206146709) internal successors, (32345), 17254 states have internal predecessors, (32345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17255 states to 17255 states and 32345 transitions. [2022-01-10 12:02:49,729 INFO L78 Accepts]: Start accepts. Automaton has 17255 states and 32345 transitions. Word has length 52 [2022-01-10 12:02:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:49,730 INFO L470 AbstractCegarLoop]: Abstraction has 17255 states and 32345 transitions. [2022-01-10 12:02:49,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 17255 states and 32345 transitions. [2022-01-10 12:02:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 12:02:49,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:49,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:49,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:02:49,733 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 12:02:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2041641015, now seen corresponding path program 1 times [2022-01-10 12:02:49,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:49,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997443293] [2022-01-10 12:02:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:49,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:49,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:49,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997443293] [2022-01-10 12:02:49,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997443293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:49,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:49,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:02:49,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898809899] [2022-01-10 12:02:49,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:49,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:02:49,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:02:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:02:49,818 INFO L87 Difference]: Start difference. First operand 17255 states and 32345 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:51,054 INFO L93 Difference]: Finished difference Result 57582 states and 108160 transitions. [2022-01-10 12:02:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:02:51,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 12:02:51,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:51,125 INFO L225 Difference]: With dead ends: 57582 [2022-01-10 12:02:51,125 INFO L226 Difference]: Without dead ends: 43807 [2022-01-10 12:02:51,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:02:51,143 INFO L933 BasicCegarLoop]: 82281 mSDtfsCounter, 50946 mSDsluCounter, 87925 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50946 SdHoareTripleChecker+Valid, 170206 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:51,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50946 Valid, 170206 Invalid, 115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:02:51,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2022-01-10 12:02:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 17255. [2022-01-10 12:02:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17255 states, 17245 states have (on average 1.8750362423890983) internal successors, (32335), 17254 states have internal predecessors, (32335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17255 states to 17255 states and 32335 transitions. [2022-01-10 12:02:51,768 INFO L78 Accepts]: Start accepts. Automaton has 17255 states and 32335 transitions. Word has length 54 [2022-01-10 12:02:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:51,768 INFO L470 AbstractCegarLoop]: Abstraction has 17255 states and 32335 transitions. [2022-01-10 12:02:51,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 17255 states and 32335 transitions. [2022-01-10 12:02:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 12:02:51,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:51,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:51,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:02:51,771 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 12:02:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1127085033, now seen corresponding path program 1 times [2022-01-10 12:02:51,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:51,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747843214] [2022-01-10 12:02:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:51,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:51,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:51,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747843214] [2022-01-10 12:02:51,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747843214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:51,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:51,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:02:51,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009426793] [2022-01-10 12:02:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:02:51,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:02:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:02:51,821 INFO L87 Difference]: Start difference. First operand 17255 states and 32335 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:52,858 INFO L93 Difference]: Finished difference Result 58537 states and 109709 transitions. [2022-01-10 12:02:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:02:52,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 12:02:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:52,909 INFO L225 Difference]: With dead ends: 58537 [2022-01-10 12:02:52,910 INFO L226 Difference]: Without dead ends: 41313 [2022-01-10 12:02:52,923 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 12:02:52,924 INFO L933 BasicCegarLoop]: 64436 mSDtfsCounter, 58106 mSDsluCounter, 96646 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58106 SdHoareTripleChecker+Valid, 161082 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:52,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58106 Valid, 161082 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:02:52,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41313 states. [2022-01-10 12:02:53,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41313 to 17263. [2022-01-10 12:02:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17263 states, 17253 states have (on average 1.8746304990436446) internal successors, (32343), 17262 states have internal predecessors, (32343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17263 states to 17263 states and 32343 transitions. [2022-01-10 12:02:53,447 INFO L78 Accepts]: Start accepts. Automaton has 17263 states and 32343 transitions. Word has length 55 [2022-01-10 12:02:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:53,447 INFO L470 AbstractCegarLoop]: Abstraction has 17263 states and 32343 transitions. [2022-01-10 12:02:53,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 17263 states and 32343 transitions. [2022-01-10 12:02:53,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:02:53,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:53,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:53,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:02:53,451 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 12:02:53,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1473717544, now seen corresponding path program 1 times [2022-01-10 12:02:53,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:53,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292983043] [2022-01-10 12:02:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:53,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:53,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:53,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292983043] [2022-01-10 12:02:53,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292983043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:53,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:53,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:02:53,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298203463] [2022-01-10 12:02:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:53,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:02:53,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:02:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:02:53,493 INFO L87 Difference]: Start difference. First operand 17263 states and 32343 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:54,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:54,134 INFO L93 Difference]: Finished difference Result 41355 states and 77491 transitions. [2022-01-10 12:02:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:02:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 12:02:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:54,176 INFO L225 Difference]: With dead ends: 41355 [2022-01-10 12:02:54,176 INFO L226 Difference]: Without dead ends: 24105 [2022-01-10 12:02:54,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:02:54,199 INFO L933 BasicCegarLoop]: 45155 mSDtfsCounter, 25883 mSDsluCounter, 51444 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25883 SdHoareTripleChecker+Valid, 96599 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:54,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25883 Valid, 96599 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:02:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24105 states. [2022-01-10 12:02:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24105 to 17211. [2022-01-10 12:02:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17201 states have (on average 1.8744259054706123) internal successors, (32242), 17210 states have internal predecessors, (32242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 32242 transitions. [2022-01-10 12:02:54,662 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 32242 transitions. Word has length 56 [2022-01-10 12:02:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:54,662 INFO L470 AbstractCegarLoop]: Abstraction has 17211 states and 32242 transitions. [2022-01-10 12:02:54,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 32242 transitions. [2022-01-10 12:02:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:02:54,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:54,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:54,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:02:54,665 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 12:02:54,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash -340245398, now seen corresponding path program 1 times [2022-01-10 12:02:54,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:54,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648465659] [2022-01-10 12:02:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:54,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:54,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:54,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648465659] [2022-01-10 12:02:54,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648465659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:54,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:54,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:02:54,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416949056] [2022-01-10 12:02:54,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:54,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:02:54,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:02:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:02:54,736 INFO L87 Difference]: Start difference. First operand 17211 states and 32242 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:02:56,989 INFO L93 Difference]: Finished difference Result 78874 states and 147829 transitions. [2022-01-10 12:02:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:02:56,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 12:02:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:02:57,127 INFO L225 Difference]: With dead ends: 78874 [2022-01-10 12:02:57,128 INFO L226 Difference]: Without dead ends: 61683 [2022-01-10 12:02:57,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:02:57,168 INFO L933 BasicCegarLoop]: 102696 mSDtfsCounter, 147863 mSDsluCounter, 96371 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147863 SdHoareTripleChecker+Valid, 199067 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:02:57,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147863 Valid, 199067 Invalid, 104 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:02:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61683 states. [2022-01-10 12:02:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61683 to 17202. [2022-01-10 12:02:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17202 states, 17192 states have (on average 1.8741275011633318) internal successors, (32220), 17201 states have internal predecessors, (32220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17202 states to 17202 states and 32220 transitions. [2022-01-10 12:02:58,383 INFO L78 Accepts]: Start accepts. Automaton has 17202 states and 32220 transitions. Word has length 57 [2022-01-10 12:02:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:02:58,383 INFO L470 AbstractCegarLoop]: Abstraction has 17202 states and 32220 transitions. [2022-01-10 12:02:58,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:02:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17202 states and 32220 transitions. [2022-01-10 12:02:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:02:58,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:02:58,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:02:58,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:02:58,386 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 12:02:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:02:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1412511526, now seen corresponding path program 1 times [2022-01-10 12:02:58,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:02:58,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891259074] [2022-01-10 12:02:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:02:58,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:02:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:02:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:02:58,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:02:58,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891259074] [2022-01-10 12:02:58,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891259074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:02:58,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:02:58,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:02:58,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018228853] [2022-01-10 12:02:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:02:58,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:02:58,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:02:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:02:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:02:58,436 INFO L87 Difference]: Start difference. First operand 17202 states and 32220 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:00,077 INFO L93 Difference]: Finished difference Result 54876 states and 102833 transitions. [2022-01-10 12:03:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:03:00,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 12:03:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:00,134 INFO L225 Difference]: With dead ends: 54876 [2022-01-10 12:03:00,134 INFO L226 Difference]: Without dead ends: 37700 [2022-01-10 12:03:00,148 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 12:03:00,148 INFO L933 BasicCegarLoop]: 70570 mSDtfsCounter, 83579 mSDsluCounter, 57643 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83579 SdHoareTripleChecker+Valid, 128213 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:00,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83579 Valid, 128213 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:03:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37700 states. [2022-01-10 12:03:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37700 to 17204. [2022-01-10 12:03:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17204 states, 17194 states have (on average 1.8739095033151099) internal successors, (32220), 17203 states have internal predecessors, (32220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17204 states to 17204 states and 32220 transitions. [2022-01-10 12:03:00,889 INFO L78 Accepts]: Start accepts. Automaton has 17204 states and 32220 transitions. Word has length 58 [2022-01-10 12:03:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:00,889 INFO L470 AbstractCegarLoop]: Abstraction has 17204 states and 32220 transitions. [2022-01-10 12:03:00,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17204 states and 32220 transitions. [2022-01-10 12:03:00,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:03:00,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:00,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:00,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:03:00,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:03:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash 124311809, now seen corresponding path program 1 times [2022-01-10 12:03:00,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:00,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237059494] [2022-01-10 12:03:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:00,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:03:00,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:00,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237059494] [2022-01-10 12:03:00,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237059494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:00,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:00,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:03:00,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69498522] [2022-01-10 12:03:00,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:00,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:03:00,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:03:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:03:00,949 INFO L87 Difference]: Start difference. First operand 17204 states and 32220 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:03,675 INFO L93 Difference]: Finished difference Result 75354 states and 141223 transitions. [2022-01-10 12:03:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:03:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 12:03:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:03,781 INFO L225 Difference]: With dead ends: 75354 [2022-01-10 12:03:03,782 INFO L226 Difference]: Without dead ends: 58176 [2022-01-10 12:03:03,800 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 12:03:03,801 INFO L933 BasicCegarLoop]: 108967 mSDtfsCounter, 102784 mSDsluCounter, 153636 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102784 SdHoareTripleChecker+Valid, 262603 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:03,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102784 Valid, 262603 Invalid, 121 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:03:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58176 states. [2022-01-10 12:03:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58176 to 17207. [2022-01-10 12:03:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17207 states, 17197 states have (on average 1.8736407512938302) internal successors, (32221), 17206 states have internal predecessors, (32221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17207 states to 17207 states and 32221 transitions. [2022-01-10 12:03:04,708 INFO L78 Accepts]: Start accepts. Automaton has 17207 states and 32221 transitions. Word has length 59 [2022-01-10 12:03:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:04,709 INFO L470 AbstractCegarLoop]: Abstraction has 17207 states and 32221 transitions. [2022-01-10 12:03:04,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 17207 states and 32221 transitions. [2022-01-10 12:03:04,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:03:04,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:04,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:04,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:03:04,730 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:03:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash -548953709, now seen corresponding path program 1 times [2022-01-10 12:03:04,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:04,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867211477] [2022-01-10 12:03:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:04,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:03:04,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:04,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867211477] [2022-01-10 12:03:04,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867211477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:04,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:04,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:03:04,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796745782] [2022-01-10 12:03:04,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:04,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:03:04,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:03:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:03:04,841 INFO L87 Difference]: Start difference. First operand 17207 states and 32221 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:09,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:09,179 INFO L93 Difference]: Finished difference Result 95833 states and 179613 transitions. [2022-01-10 12:03:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:03:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 12:03:09,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:09,341 INFO L225 Difference]: With dead ends: 95833 [2022-01-10 12:03:09,341 INFO L226 Difference]: Without dead ends: 78652 [2022-01-10 12:03:09,367 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 12:03:09,368 INFO L933 BasicCegarLoop]: 147355 mSDtfsCounter, 147894 mSDsluCounter, 211213 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147894 SdHoareTripleChecker+Valid, 358568 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:09,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147894 Valid, 358568 Invalid, 140 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:03:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78652 states. [2022-01-10 12:03:10,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78652 to 17211. [2022-01-10 12:03:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17201 states have (on average 1.8733213185279927) internal successors, (32223), 17210 states have internal predecessors, (32223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 32223 transitions. [2022-01-10 12:03:10,788 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 32223 transitions. Word has length 60 [2022-01-10 12:03:10,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:10,788 INFO L470 AbstractCegarLoop]: Abstraction has 17211 states and 32223 transitions. [2022-01-10 12:03:10,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 32223 transitions. [2022-01-10 12:03:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:03:10,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:10,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:10,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:03:10,791 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:03:10,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 660871758, now seen corresponding path program 1 times [2022-01-10 12:03:10,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001950830] [2022-01-10 12:03:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:10,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:03:10,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001950830] [2022-01-10 12:03:10,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001950830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:10,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:10,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:03:10,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560043819] [2022-01-10 12:03:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:10,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:03:10,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:03:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:03:10,842 INFO L87 Difference]: Start difference. First operand 17211 states and 32223 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:12,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:12,750 INFO L93 Difference]: Finished difference Result 54859 states and 102789 transitions. [2022-01-10 12:03:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:03:12,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 12:03:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:12,826 INFO L225 Difference]: With dead ends: 54859 [2022-01-10 12:03:12,826 INFO L226 Difference]: Without dead ends: 37707 [2022-01-10 12:03:12,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:12,850 INFO L933 BasicCegarLoop]: 51385 mSDtfsCounter, 83548 mSDsluCounter, 57678 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83548 SdHoareTripleChecker+Valid, 109063 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:12,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83548 Valid, 109063 Invalid, 49 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37707 states. [2022-01-10 12:03:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37707 to 17214. [2022-01-10 12:03:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17214 states, 17204 states have (on average 1.873169030458033) internal successors, (32226), 17213 states have internal predecessors, (32226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17214 states to 17214 states and 32226 transitions. [2022-01-10 12:03:13,889 INFO L78 Accepts]: Start accepts. Automaton has 17214 states and 32226 transitions. Word has length 61 [2022-01-10 12:03:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:13,889 INFO L470 AbstractCegarLoop]: Abstraction has 17214 states and 32226 transitions. [2022-01-10 12:03:13,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 17214 states and 32226 transitions. [2022-01-10 12:03:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:03:13,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:13,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:13,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:03:13,893 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:03:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1994865704, now seen corresponding path program 1 times [2022-01-10 12:03:13,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849698292] [2022-01-10 12:03:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:13,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:03:13,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:13,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849698292] [2022-01-10 12:03:13,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849698292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:13,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:13,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:13,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486095909] [2022-01-10 12:03:13,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:13,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:13,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:13,978 INFO L87 Difference]: Start difference. First operand 17214 states and 32226 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:15,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:15,195 INFO L93 Difference]: Finished difference Result 41252 states and 77266 transitions. [2022-01-10 12:03:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:03:15,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 12:03:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:15,235 INFO L225 Difference]: With dead ends: 41252 [2022-01-10 12:03:15,235 INFO L226 Difference]: Without dead ends: 24073 [2022-01-10 12:03:15,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:15,250 INFO L933 BasicCegarLoop]: 45070 mSDtfsCounter, 45068 mSDsluCounter, 38774 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45068 SdHoareTripleChecker+Valid, 83844 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:15,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45068 Valid, 83844 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24073 states. [2022-01-10 12:03:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24073 to 17191. [2022-01-10 12:03:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17191 states, 17181 states have (on average 1.8734066701588965) internal successors, (32187), 17190 states have internal predecessors, (32187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17191 states to 17191 states and 32187 transitions. [2022-01-10 12:03:16,185 INFO L78 Accepts]: Start accepts. Automaton has 17191 states and 32187 transitions. Word has length 62 [2022-01-10 12:03:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:16,185 INFO L470 AbstractCegarLoop]: Abstraction has 17191 states and 32187 transitions. [2022-01-10 12:03:16,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 17191 states and 32187 transitions. [2022-01-10 12:03:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:03:16,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:16,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:16,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:03:16,188 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 12:03:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1512545522, now seen corresponding path program 1 times [2022-01-10 12:03:16,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:16,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191209261] [2022-01-10 12:03:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:16,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:03:16,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:16,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191209261] [2022-01-10 12:03:16,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191209261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:16,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:16,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:03:16,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626114977] [2022-01-10 12:03:16,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:16,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:03:16,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:03:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:03:16,239 INFO L87 Difference]: Start difference. First operand 17191 states and 32187 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)