/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:56:13,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:56:13,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:56:14,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:56:14,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:56:14,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:56:14,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:56:14,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:56:14,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:56:14,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:56:14,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:56:14,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:56:14,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:56:14,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:56:14,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:56:14,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:56:14,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:56:14,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:56:14,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:56:14,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:56:14,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:56:14,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:56:14,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:56:14,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:56:14,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:56:14,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:56:14,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:56:14,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:56:14,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:56:14,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:56:14,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:56:14,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:56:14,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:56:14,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:56:14,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:56:14,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:56:14,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:56:14,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:56:14,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:56:14,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:56:14,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:56:14,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:56:14,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:56:14,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:56:14,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:56:14,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:56:14,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:56:14,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:56:14,110 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:56:14,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:56:14,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:56:14,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:56:14,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:56:14,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:56:14,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:56:14,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:56:14,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:56:14,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:56:14,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:56:14,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:56:14,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:56:14,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:56:14,114 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:56:14,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:56:14,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:56:14,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:56:14,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:56:14,115 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:56:14,115 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:56:14,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:56:14,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:56:14,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:56:14,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:56:14,400 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:56:14,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2022-01-10 17:56:14,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2edb2be/b004d88c6a614631a054713c4dcd2703/FLAGde175fc28 [2022-01-10 17:56:14,976 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:56:14,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2022-01-10 17:56:15,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2edb2be/b004d88c6a614631a054713c4dcd2703/FLAGde175fc28 [2022-01-10 17:56:15,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2edb2be/b004d88c6a614631a054713c4dcd2703 [2022-01-10 17:56:15,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:56:15,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:56:15,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:56:15,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:56:15,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:56:15,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:56:15" (1/1) ... [2022-01-10 17:56:15,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d88aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:15, skipping insertion in model container [2022-01-10 17:56:15,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:56:15" (1/1) ... [2022-01-10 17:56:15,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:56:15,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:56:15,797 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_spec2_product24.cil.c[63703,63716] [2022-01-10 17:56:15,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:56:15,873 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:56:15,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:56:15,994 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_spec2_product24.cil.c[63703,63716] [2022-01-10 17:56:16,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:56:16,026 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:56:16,102 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_spec2_product24.cil.c[63703,63716] [2022-01-10 17:56:16,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:56:16,148 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:56:16,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16 WrapperNode [2022-01-10 17:56:16,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:56:16,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:56:16,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:56:16,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:56:16,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:16,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:16,489 INFO L137 Inliner]: procedures = 100, calls = 353, calls flagged for inlining = 205, calls inlined = 806, statements flattened = 26738 [2022-01-10 17:56:16,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:56:16,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:56:16,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:56:16,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:56:16,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:16,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:16,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:16,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:16,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:16,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:17,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:17,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:56:17,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:56:17,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:56:17,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:56:17,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (1/1) ... [2022-01-10 17:56:17,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:56:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:56:17,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 17:56:17,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 17:56:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:56:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:56:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:56:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:56:17,405 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:56:17,407 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:56:27,049 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:56:27,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:56:27,096 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:56:27,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:56:27 BoogieIcfgContainer [2022-01-10 17:56:27,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:56:27,106 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:56:27,106 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:56:27,108 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:56:27,111 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:56:27" (1/1) ... [2022-01-10 17:56:29,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:56:29 BasicIcfg [2022-01-10 17:56:29,038 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:56:29,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:56:29,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:56:29,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:56:29,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:56:15" (1/4) ... [2022-01-10 17:56:29,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696c4993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:56:29, skipping insertion in model container [2022-01-10 17:56:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:56:16" (2/4) ... [2022-01-10 17:56:29,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696c4993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:56:29, skipping insertion in model container [2022-01-10 17:56:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:56:27" (3/4) ... [2022-01-10 17:56:29,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696c4993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:56:29, skipping insertion in model container [2022-01-10 17:56:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:56:29" (4/4) ... [2022-01-10 17:56:29,045 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.cTransformedIcfg [2022-01-10 17:56:29,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:56:29,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:56:29,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:56:29,125 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:56:29,125 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:56:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 7106 states, 7100 states have (on average 1.8742253521126762) internal successors, (13307), 7105 states have internal predecessors, (13307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 17:56:29,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:29,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:29,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 959571160, now seen corresponding path program 1 times [2022-01-10 17:56:29,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:29,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043584603] [2022-01-10 17:56:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:29,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:29,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:29,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043584603] [2022-01-10 17:56:29,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043584603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:29,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:29,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:29,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980600888] [2022-01-10 17:56:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:29,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:29,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:29,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:29,768 INFO L87 Difference]: Start difference. First operand has 7106 states, 7100 states have (on average 1.8742253521126762) internal successors, (13307), 7105 states have internal predecessors, (13307), 0 states have call successors, (0), 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 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:30,171 INFO L93 Difference]: Finished difference Result 14197 states and 26591 transitions. [2022-01-10 17:56:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:30,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-10 17:56:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:30,225 INFO L225 Difference]: With dead ends: 14197 [2022-01-10 17:56:30,225 INFO L226 Difference]: Without dead ends: 7095 [2022-01-10 17:56:30,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:30,247 INFO L933 BasicCegarLoop]: 13286 mSDtfsCounter, 13281 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13281 SdHoareTripleChecker+Valid, 13297 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:30,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13281 Valid, 13297 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:56:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2022-01-10 17:56:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7095. [2022-01-10 17:56:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7090 states have (on average 1.8734837799717912) internal successors, (13283), 7094 states have internal predecessors, (13283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 13283 transitions. [2022-01-10 17:56:30,728 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 13283 transitions. Word has length 33 [2022-01-10 17:56:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:30,728 INFO L470 AbstractCegarLoop]: Abstraction has 7095 states and 13283 transitions. [2022-01-10 17:56:30,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 13283 transitions. [2022-01-10 17:56:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 17:56:30,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:30,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:30,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:56:30,734 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1559844783, now seen corresponding path program 1 times [2022-01-10 17:56:30,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:30,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770539756] [2022-01-10 17:56:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:30,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:30,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:30,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770539756] [2022-01-10 17:56:30,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770539756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:30,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:30,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:56:30,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567869134] [2022-01-10 17:56:30,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:30,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:56:30,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:30,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:56:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:56:30,946 INFO L87 Difference]: Start difference. First operand 7095 states and 13283 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:31,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:31,420 INFO L93 Difference]: Finished difference Result 14176 states and 26551 transitions. [2022-01-10 17:56:31,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:31,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-10 17:56:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:31,452 INFO L225 Difference]: With dead ends: 14176 [2022-01-10 17:56:31,452 INFO L226 Difference]: Without dead ends: 7095 [2022-01-10 17:56:31,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:56:31,466 INFO L933 BasicCegarLoop]: 13276 mSDtfsCounter, 53093 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53093 SdHoareTripleChecker+Valid, 13290 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:31,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53093 Valid, 13290 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:56:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2022-01-10 17:56:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7095. [2022-01-10 17:56:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7090 states have (on average 1.8733427362482369) internal successors, (13282), 7094 states have internal predecessors, (13282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 13282 transitions. [2022-01-10 17:56:31,681 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 13282 transitions. Word has length 40 [2022-01-10 17:56:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:31,683 INFO L470 AbstractCegarLoop]: Abstraction has 7095 states and 13282 transitions. [2022-01-10 17:56:31,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:31,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 13282 transitions. [2022-01-10 17:56:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 17:56:31,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:31,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:31,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:56:31,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash 598230766, now seen corresponding path program 1 times [2022-01-10 17:56:31,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:31,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591091102] [2022-01-10 17:56:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:31,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:31,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:31,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591091102] [2022-01-10 17:56:31,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591091102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:31,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:31,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:31,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295975084] [2022-01-10 17:56:31,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:31,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:31,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:31,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:31,780 INFO L87 Difference]: Start difference. First operand 7095 states and 13282 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:32,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:32,072 INFO L93 Difference]: Finished difference Result 14140 states and 26479 transitions. [2022-01-10 17:56:32,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:32,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-10 17:56:32,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:32,119 INFO L225 Difference]: With dead ends: 14140 [2022-01-10 17:56:32,120 INFO L226 Difference]: Without dead ends: 7095 [2022-01-10 17:56:32,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:32,138 INFO L933 BasicCegarLoop]: 13222 mSDtfsCounter, 13241 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13241 SdHoareTripleChecker+Valid, 13236 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:32,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13241 Valid, 13236 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:56:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2022-01-10 17:56:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7095. [2022-01-10 17:56:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7090 states have (on average 1.8698166431593795) internal successors, (13257), 7094 states have internal predecessors, (13257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 13257 transitions. [2022-01-10 17:56:32,399 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 13257 transitions. Word has length 40 [2022-01-10 17:56:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:32,399 INFO L470 AbstractCegarLoop]: Abstraction has 7095 states and 13257 transitions. [2022-01-10 17:56:32,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 13257 transitions. [2022-01-10 17:56:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 17:56:32,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:32,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:32,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:56:32,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:32,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:32,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1075751233, now seen corresponding path program 1 times [2022-01-10 17:56:32,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:32,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771070768] [2022-01-10 17:56:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:32,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:32,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:32,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771070768] [2022-01-10 17:56:32,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771070768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:32,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:32,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:32,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029092658] [2022-01-10 17:56:32,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:32,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:32,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:32,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:32,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:32,495 INFO L87 Difference]: Start difference. First operand 7095 states and 13257 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:32,898 INFO L93 Difference]: Finished difference Result 15457 states and 28925 transitions. [2022-01-10 17:56:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:32,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-10 17:56:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:32,933 INFO L225 Difference]: With dead ends: 15457 [2022-01-10 17:56:32,934 INFO L226 Difference]: Without dead ends: 11886 [2022-01-10 17:56:32,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:32,950 INFO L933 BasicCegarLoop]: 14190 mSDtfsCounter, 13197 mSDsluCounter, 8969 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13197 SdHoareTripleChecker+Valid, 23159 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:32,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13197 Valid, 23159 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:56:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11886 states. [2022-01-10 17:56:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11886 to 11886. [2022-01-10 17:56:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11886 states, 11881 states have (on average 1.8724013130207895) internal successors, (22246), 11885 states have internal predecessors, (22246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11886 states to 11886 states and 22246 transitions. [2022-01-10 17:56:33,335 INFO L78 Accepts]: Start accepts. Automaton has 11886 states and 22246 transitions. Word has length 43 [2022-01-10 17:56:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:33,336 INFO L470 AbstractCegarLoop]: Abstraction has 11886 states and 22246 transitions. [2022-01-10 17:56:33,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 11886 states and 22246 transitions. [2022-01-10 17:56:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 17:56:33,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:33,337 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] [2022-01-10 17:56:33,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:56:33,338 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -849270360, now seen corresponding path program 1 times [2022-01-10 17:56:33,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:33,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258753285] [2022-01-10 17:56:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:33,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:33,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:33,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258753285] [2022-01-10 17:56:33,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258753285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:33,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:33,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:33,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253630503] [2022-01-10 17:56:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:33,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:33,393 INFO L87 Difference]: Start difference. First operand 11886 states and 22246 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:33,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:33,884 INFO L93 Difference]: Finished difference Result 28353 states and 53105 transitions. [2022-01-10 17:56:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:33,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 17:56:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:33,946 INFO L225 Difference]: With dead ends: 28353 [2022-01-10 17:56:33,946 INFO L226 Difference]: Without dead ends: 21235 [2022-01-10 17:56:33,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:33,967 INFO L933 BasicCegarLoop]: 13254 mSDtfsCounter, 13196 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13196 SdHoareTripleChecker+Valid, 22226 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:33,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13196 Valid, 22226 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:56:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21235 states. [2022-01-10 17:56:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21235 to 21233. [2022-01-10 17:56:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21233 states, 21228 states have (on average 1.8738458639532694) internal successors, (39778), 21232 states have internal predecessors, (39778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21233 states to 21233 states and 39778 transitions. [2022-01-10 17:56:34,727 INFO L78 Accepts]: Start accepts. Automaton has 21233 states and 39778 transitions. Word has length 45 [2022-01-10 17:56:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:34,728 INFO L470 AbstractCegarLoop]: Abstraction has 21233 states and 39778 transitions. [2022-01-10 17:56:34,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21233 states and 39778 transitions. [2022-01-10 17:56:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:56:34,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:34,731 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 17:56:34,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:56:34,731 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -965781962, now seen corresponding path program 1 times [2022-01-10 17:56:34,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:34,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851099882] [2022-01-10 17:56:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:34,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:34,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:34,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851099882] [2022-01-10 17:56:34,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851099882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:34,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:34,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:34,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058166433] [2022-01-10 17:56:34,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:34,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:34,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:34,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:34,809 INFO L87 Difference]: Start difference. First operand 21233 states and 39778 transitions. 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 17:56:35,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:35,660 INFO L93 Difference]: Finished difference Result 53663 states and 100554 transitions. [2022-01-10 17:56:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:35,661 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 17:56:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:35,781 INFO L225 Difference]: With dead ends: 53663 [2022-01-10 17:56:35,781 INFO L226 Difference]: Without dead ends: 39460 [2022-01-10 17:56:35,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:35,822 INFO L933 BasicCegarLoop]: 13254 mSDtfsCounter, 13184 mSDsluCounter, 8975 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13184 SdHoareTripleChecker+Valid, 22229 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:35,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13184 Valid, 22229 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:56:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39460 states. [2022-01-10 17:56:36,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39460 to 39456. [2022-01-10 17:56:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39456 states, 39451 states have (on average 1.8744265037641632) internal successors, (73948), 39455 states have internal predecessors, (73948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39456 states to 39456 states and 73948 transitions. [2022-01-10 17:56:37,075 INFO L78 Accepts]: Start accepts. Automaton has 39456 states and 73948 transitions. Word has length 46 [2022-01-10 17:56:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:37,077 INFO L470 AbstractCegarLoop]: Abstraction has 39456 states and 73948 transitions. [2022-01-10 17:56:37,077 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 17:56:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 39456 states and 73948 transitions. [2022-01-10 17:56:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:56:37,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:37,079 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] [2022-01-10 17:56:37,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:56:37,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash 125565525, now seen corresponding path program 1 times [2022-01-10 17:56:37,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141896631] [2022-01-10 17:56:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:37,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:37,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:37,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141896631] [2022-01-10 17:56:37,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141896631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:37,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:37,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:37,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043384274] [2022-01-10 17:56:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:37,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:37,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:37,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:37,162 INFO L87 Difference]: Start difference. First operand 39456 states and 73948 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:38,363 INFO L93 Difference]: Finished difference Result 103319 states and 193627 transitions. [2022-01-10 17:56:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-10 17:56:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:38,527 INFO L225 Difference]: With dead ends: 103319 [2022-01-10 17:56:38,531 INFO L226 Difference]: Without dead ends: 74965 [2022-01-10 17:56:38,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:38,587 INFO L933 BasicCegarLoop]: 13254 mSDtfsCounter, 13183 mSDsluCounter, 8978 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13183 SdHoareTripleChecker+Valid, 22232 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:38,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13183 Valid, 22232 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:56:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74965 states. [2022-01-10 17:56:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74965 to 74959. [2022-01-10 17:56:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74959 states, 74954 states have (on average 1.8744563332177069) internal successors, (140498), 74958 states have internal predecessors, (140498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74959 states to 74959 states and 140498 transitions. [2022-01-10 17:56:40,471 INFO L78 Accepts]: Start accepts. Automaton has 74959 states and 140498 transitions. Word has length 47 [2022-01-10 17:56:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:40,471 INFO L470 AbstractCegarLoop]: Abstraction has 74959 states and 140498 transitions. [2022-01-10 17:56:40,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 74959 states and 140498 transitions. [2022-01-10 17:56:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 17:56:40,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:40,473 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 17:56:40,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:56:40,474 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash -402400666, now seen corresponding path program 1 times [2022-01-10 17:56:40,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:40,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642554207] [2022-01-10 17:56:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:40,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:40,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:40,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642554207] [2022-01-10 17:56:40,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642554207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:40,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:40,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:40,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826729281] [2022-01-10 17:56:40,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:40,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:40,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:40,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:40,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:40,526 INFO L87 Difference]: Start difference. First operand 74959 states and 140498 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 17:56:42,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:42,742 INFO L93 Difference]: Finished difference Result 200703 states and 376119 transitions. [2022-01-10 17:56:42,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:42,742 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 17:56:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:43,263 INFO L225 Difference]: With dead ends: 200703 [2022-01-10 17:56:43,263 INFO L226 Difference]: Without dead ends: 144079 [2022-01-10 17:56:43,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:43,326 INFO L933 BasicCegarLoop]: 13255 mSDtfsCounter, 13182 mSDsluCounter, 8981 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13182 SdHoareTripleChecker+Valid, 22236 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:43,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13182 Valid, 22236 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:56:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144079 states. [2022-01-10 17:56:45,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144079 to 144071. [2022-01-10 17:56:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144071 states, 144066 states have (on average 1.874154901225827) internal successors, (270002), 144070 states have internal predecessors, (270002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144071 states to 144071 states and 270002 transitions. [2022-01-10 17:56:46,374 INFO L78 Accepts]: Start accepts. Automaton has 144071 states and 270002 transitions. Word has length 48 [2022-01-10 17:56:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:46,374 INFO L470 AbstractCegarLoop]: Abstraction has 144071 states and 270002 transitions. [2022-01-10 17:56:46,375 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 17:56:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 144071 states and 270002 transitions. [2022-01-10 17:56:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 17:56:46,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:46,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:46,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:56:46,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:46,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash 579132683, now seen corresponding path program 1 times [2022-01-10 17:56:46,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:46,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835868756] [2022-01-10 17:56:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:46,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:46,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:46,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835868756] [2022-01-10 17:56:46,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835868756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:46,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:46,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:46,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259071666] [2022-01-10 17:56:46,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:46,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:46,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:46,766 INFO L87 Difference]: Start difference. First operand 144071 states and 270002 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:50,902 INFO L93 Difference]: Finished difference Result 292846 states and 548664 transitions. [2022-01-10 17:56:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:50,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 17:56:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:51,246 INFO L225 Difference]: With dead ends: 292846 [2022-01-10 17:56:51,246 INFO L226 Difference]: Without dead ends: 151769 [2022-01-10 17:56:51,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:51,355 INFO L933 BasicCegarLoop]: 16396 mSDtfsCounter, 9167 mSDsluCounter, 8458 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9167 SdHoareTripleChecker+Valid, 24854 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:51,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9167 Valid, 24854 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 17:56:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151769 states. [2022-01-10 17:56:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151769 to 144071. [2022-01-10 17:56:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144071 states, 144066 states have (on average 1.8553440784085071) internal successors, (267292), 144070 states have internal predecessors, (267292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144071 states to 144071 states and 267292 transitions. [2022-01-10 17:56:54,891 INFO L78 Accepts]: Start accepts. Automaton has 144071 states and 267292 transitions. Word has length 111 [2022-01-10 17:56:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:56:54,891 INFO L470 AbstractCegarLoop]: Abstraction has 144071 states and 267292 transitions. [2022-01-10 17:56:54,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 144071 states and 267292 transitions. [2022-01-10 17:56:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 17:56:54,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:56:54,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:56:54,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:56:54,940 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:56:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:56:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2043589629, now seen corresponding path program 1 times [2022-01-10 17:56:54,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:56:54,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505347046] [2022-01-10 17:56:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:56:54,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:56:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:56:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:56:55,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:56:55,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505347046] [2022-01-10 17:56:55,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505347046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:56:55,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:56:55,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:56:55,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547224128] [2022-01-10 17:56:55,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:56:55,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:56:55,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:56:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:56:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:55,036 INFO L87 Difference]: Start difference. First operand 144071 states and 267292 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:56:59,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:56:59,031 INFO L93 Difference]: Finished difference Result 296748 states and 550662 transitions. [2022-01-10 17:56:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:56:59,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 17:56:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:56:59,372 INFO L225 Difference]: With dead ends: 296748 [2022-01-10 17:56:59,372 INFO L226 Difference]: Without dead ends: 158243 [2022-01-10 17:56:59,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:56:59,488 INFO L933 BasicCegarLoop]: 17408 mSDtfsCounter, 8618 mSDsluCounter, 9094 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8618 SdHoareTripleChecker+Valid, 26502 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:56:59,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8618 Valid, 26502 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 17:56:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158243 states. [2022-01-10 17:57:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158243 to 144071. [2022-01-10 17:57:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144071 states, 144066 states have (on average 1.8391709355434316) internal successors, (264962), 144070 states have internal predecessors, (264962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:57:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144071 states to 144071 states and 264962 transitions. [2022-01-10 17:57:02,998 INFO L78 Accepts]: Start accepts. Automaton has 144071 states and 264962 transitions. Word has length 116 [2022-01-10 17:57:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:57:02,998 INFO L470 AbstractCegarLoop]: Abstraction has 144071 states and 264962 transitions. [2022-01-10 17:57:02,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:57:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 144071 states and 264962 transitions. [2022-01-10 17:57:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 17:57:03,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:57:03,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:57:03,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:57:03,036 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:57:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:57:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash -64182817, now seen corresponding path program 1 times [2022-01-10 17:57:03,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:57:03,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854473479] [2022-01-10 17:57:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:57:03,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:57:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:57:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:57:03,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:57:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854473479] [2022-01-10 17:57:03,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854473479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:57:03,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:57:03,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:57:03,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308544963] [2022-01-10 17:57:03,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:57:03,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:57:03,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:57:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:57:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:57:03,102 INFO L87 Difference]: Start difference. First operand 144071 states and 264962 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)