/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:56:03,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:56:03,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:56:03,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:56:03,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:56:03,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:56:03,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:56:03,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:56:03,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:56:03,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:56:03,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:56:03,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:56:03,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:56:03,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:56:03,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:56:03,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:56:03,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:56:03,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:56:03,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:56:03,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:56:03,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:56:03,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:56:03,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:56:03,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:56:03,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:56:03,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:56:03,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:56:03,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:56:03,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:56:03,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:56:03,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:56:03,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:56:03,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:56:03,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:56:03,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:56:03,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:56:03,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:56:03,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:56:03,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:56:03,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:56:03,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:56:03,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:56:03,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:56:03,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:56:03,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:56:03,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:56:03,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:56:03,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:56:03,269 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:56:03,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:56:03,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:56:03,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:56:03,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:56:03,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:56:03,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:56:03,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:56:03,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:56:03,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:56:03,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:56:03,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:56:03,273 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:56:03,273 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:56:03,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:56:03,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:56:03,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:56:03,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:56:03,469 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:56:03,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2022-01-11 05:56:03,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08fe38422/22a10122cf81449e9df2f3de9e011b60/FLAG0579349a9 [2022-01-11 05:56:03,898 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:56:03,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2022-01-11 05:56:03,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08fe38422/22a10122cf81449e9df2f3de9e011b60/FLAG0579349a9 [2022-01-11 05:56:04,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08fe38422/22a10122cf81449e9df2f3de9e011b60 [2022-01-11 05:56:04,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:56:04,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:56:04,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:56:04,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:56:04,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:56:04,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512da599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04, skipping insertion in model container [2022-01-11 05:56:04,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:56:04,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:56:04,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2022-01-11 05:56:04,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:56:04,624 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:56:04,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:56:04,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2022-01-11 05:56:04,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:56:04,735 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:56:04,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2022-01-11 05:56:04,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:56:04,835 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:56:04,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04 WrapperNode [2022-01-11 05:56:04,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:56:04,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:56:04,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:56:04,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:56:04,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,918 INFO L137 Inliner]: procedures = 62, calls = 164, calls flagged for inlining = 61, calls inlined = 147, statements flattened = 1051 [2022-01-11 05:56:04,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:56:04,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:56:04,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:56:04,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:56:04,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:56:04,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:56:04,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:56:04,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:56:04,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (1/1) ... [2022-01-11 05:56:04,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:56:04,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:56:04,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:56:05,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:56:05,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:56:05,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:56:05,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:56:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:56:05,123 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:56:05,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:56:05,516 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:56:05,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:56:05,522 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 05:56:05,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:56:05 BoogieIcfgContainer [2022-01-11 05:56:05,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:56:05,524 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:56:05,525 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:56:05,525 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:56:05,541 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:56:05" (1/1) ... [2022-01-11 05:56:05,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:56:05 BasicIcfg [2022-01-11 05:56:05,717 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:56:05,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:56:05,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:56:05,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:56:05,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:56:04" (1/4) ... [2022-01-11 05:56:05,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6078835f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:56:05, skipping insertion in model container [2022-01-11 05:56:05,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:56:04" (2/4) ... [2022-01-11 05:56:05,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6078835f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:56:05, skipping insertion in model container [2022-01-11 05:56:05,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:56:05" (3/4) ... [2022-01-11 05:56:05,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6078835f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:56:05, skipping insertion in model container [2022-01-11 05:56:05,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:56:05" (4/4) ... [2022-01-11 05:56:05,724 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.cTransformedIcfg [2022-01-11 05:56:05,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:56:05,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 05:56:05,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:56:05,762 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:56:05,763 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 05:56:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 284 states have (on average 1.3767605633802817) internal successors, (391), 287 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 05:56:05,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:05,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:05,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:05,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1020991754, now seen corresponding path program 1 times [2022-01-11 05:56:05,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:05,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945022220] [2022-01-11 05:56:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:05,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:05,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:05,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945022220] [2022-01-11 05:56:06,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945022220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:06,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:06,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:56:06,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324789662] [2022-01-11 05:56:06,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:06,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:56:06,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:56:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:56:06,042 INFO L87 Difference]: Start difference. First operand has 288 states, 284 states have (on average 1.3767605633802817) internal successors, (391), 287 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:06,092 INFO L93 Difference]: Finished difference Result 565 states and 770 transitions. [2022-01-11 05:56:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:56:06,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-11 05:56:06,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:06,103 INFO L225 Difference]: With dead ends: 565 [2022-01-11 05:56:06,103 INFO L226 Difference]: Without dead ends: 278 [2022-01-11 05:56:06,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:56:06,110 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:06,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:56:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-11 05:56:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-01-11 05:56:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 275 states have (on average 1.3563636363636364) internal successors, (373), 277 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 373 transitions. [2022-01-11 05:56:06,159 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 373 transitions. Word has length 21 [2022-01-11 05:56:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:06,159 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 373 transitions. [2022-01-11 05:56:06,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 373 transitions. [2022-01-11 05:56:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 05:56:06,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:06,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:06,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:56:06,161 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:06,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1514155654, now seen corresponding path program 1 times [2022-01-11 05:56:06,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:06,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845462798] [2022-01-11 05:56:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:06,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:06,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:06,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845462798] [2022-01-11 05:56:06,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845462798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:06,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:06,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:56:06,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995780769] [2022-01-11 05:56:06,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:06,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:56:06,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:56:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:06,217 INFO L87 Difference]: Start difference. First operand 278 states and 373 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:06,265 INFO L93 Difference]: Finished difference Result 618 states and 831 transitions. [2022-01-11 05:56:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:56:06,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-11 05:56:06,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:06,267 INFO L225 Difference]: With dead ends: 618 [2022-01-11 05:56:06,267 INFO L226 Difference]: Without dead ends: 348 [2022-01-11 05:56:06,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:06,269 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 353 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:06,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 468 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:56:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-11 05:56:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 339. [2022-01-11 05:56:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 336 states have (on average 1.3571428571428572) internal successors, (456), 338 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 456 transitions. [2022-01-11 05:56:06,288 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 456 transitions. Word has length 22 [2022-01-11 05:56:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:06,289 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 456 transitions. [2022-01-11 05:56:06,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 456 transitions. [2022-01-11 05:56:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-11 05:56:06,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:06,290 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] [2022-01-11 05:56:06,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:56:06,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:06,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:06,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1248441536, now seen corresponding path program 1 times [2022-01-11 05:56:06,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:06,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881245244] [2022-01-11 05:56:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:06,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:06,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:06,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881245244] [2022-01-11 05:56:06,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881245244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:06,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:06,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:56:06,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568236918] [2022-01-11 05:56:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:06,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:56:06,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:56:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:06,399 INFO L87 Difference]: Start difference. First operand 339 states and 456 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:06,494 INFO L93 Difference]: Finished difference Result 691 states and 924 transitions. [2022-01-11 05:56:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:56:06,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-11 05:56:06,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:06,496 INFO L225 Difference]: With dead ends: 691 [2022-01-11 05:56:06,496 INFO L226 Difference]: Without dead ends: 360 [2022-01-11 05:56:06,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:06,498 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 191 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:06,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 432 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:56:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-11 05:56:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 354. [2022-01-11 05:56:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 351 states have (on average 1.2934472934472934) internal successors, (454), 353 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 454 transitions. [2022-01-11 05:56:06,514 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 454 transitions. Word has length 28 [2022-01-11 05:56:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:06,514 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 454 transitions. [2022-01-11 05:56:06,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 454 transitions. [2022-01-11 05:56:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-11 05:56:06,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:06,515 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] [2022-01-11 05:56:06,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:56:06,515 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1187880530, now seen corresponding path program 1 times [2022-01-11 05:56:06,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:06,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886215346] [2022-01-11 05:56:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:06,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:06,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:06,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886215346] [2022-01-11 05:56:06,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886215346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:06,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:06,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:56:06,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126263069] [2022-01-11 05:56:06,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:06,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:56:06,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:56:06,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:56:06,657 INFO L87 Difference]: Start difference. First operand 354 states and 454 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:06,913 INFO L93 Difference]: Finished difference Result 1182 states and 1491 transitions. [2022-01-11 05:56:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:56:06,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-01-11 05:56:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:06,916 INFO L225 Difference]: With dead ends: 1182 [2022-01-11 05:56:06,916 INFO L226 Difference]: Without dead ends: 836 [2022-01-11 05:56:06,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:56:06,924 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 695 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:06,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1700 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:56:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-01-11 05:56:06,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 348. [2022-01-11 05:56:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 345 states have (on average 1.263768115942029) internal successors, (436), 347 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 436 transitions. [2022-01-11 05:56:06,955 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 436 transitions. Word has length 32 [2022-01-11 05:56:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:06,956 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 436 transitions. [2022-01-11 05:56:06,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 436 transitions. [2022-01-11 05:56:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 05:56:06,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:06,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:06,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:56:06,961 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 146699198, now seen corresponding path program 1 times [2022-01-11 05:56:06,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:06,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328894509] [2022-01-11 05:56:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:06,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:07,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:07,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328894509] [2022-01-11 05:56:07,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328894509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:07,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:07,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:56:07,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302802207] [2022-01-11 05:56:07,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:07,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:56:07,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:56:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:56:07,051 INFO L87 Difference]: Start difference. First operand 348 states and 436 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:07,204 INFO L93 Difference]: Finished difference Result 979 states and 1210 transitions. [2022-01-11 05:56:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:56:07,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-11 05:56:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:07,206 INFO L225 Difference]: With dead ends: 979 [2022-01-11 05:56:07,206 INFO L226 Difference]: Without dead ends: 639 [2022-01-11 05:56:07,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:56:07,211 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 453 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:07,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1272 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:56:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-01-11 05:56:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 375. [2022-01-11 05:56:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 372 states have (on average 1.2446236559139785) internal successors, (463), 374 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 463 transitions. [2022-01-11 05:56:07,236 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 463 transitions. Word has length 35 [2022-01-11 05:56:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:07,240 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 463 transitions. [2022-01-11 05:56:07,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 463 transitions. [2022-01-11 05:56:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 05:56:07,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:07,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:07,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:56:07,243 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1654251007, now seen corresponding path program 1 times [2022-01-11 05:56:07,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:07,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186948096] [2022-01-11 05:56:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:07,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:07,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:07,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186948096] [2022-01-11 05:56:07,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186948096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:07,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:07,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:56:07,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423712560] [2022-01-11 05:56:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:07,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:56:07,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:07,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:56:07,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:56:07,309 INFO L87 Difference]: Start difference. First operand 375 states and 463 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:07,473 INFO L93 Difference]: Finished difference Result 1075 states and 1306 transitions. [2022-01-11 05:56:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:56:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-11 05:56:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:07,476 INFO L225 Difference]: With dead ends: 1075 [2022-01-11 05:56:07,476 INFO L226 Difference]: Without dead ends: 708 [2022-01-11 05:56:07,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:56:07,477 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 408 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:07,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 918 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:56:07,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-01-11 05:56:07,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 393. [2022-01-11 05:56:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 390 states have (on average 1.2333333333333334) internal successors, (481), 392 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 481 transitions. [2022-01-11 05:56:07,505 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 481 transitions. Word has length 35 [2022-01-11 05:56:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:07,506 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 481 transitions. [2022-01-11 05:56:07,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 481 transitions. [2022-01-11 05:56:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-11 05:56:07,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:07,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:07,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:56:07,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1287406592, now seen corresponding path program 1 times [2022-01-11 05:56:07,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:07,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133411590] [2022-01-11 05:56:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:07,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:07,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:07,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133411590] [2022-01-11 05:56:07,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133411590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:07,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:07,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:56:07,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120874649] [2022-01-11 05:56:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:07,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:56:07,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:56:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:07,550 INFO L87 Difference]: Start difference. First operand 393 states and 481 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:07,562 INFO L93 Difference]: Finished difference Result 393 states and 481 transitions. [2022-01-11 05:56:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:56:07,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-11 05:56:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:07,563 INFO L225 Difference]: With dead ends: 393 [2022-01-11 05:56:07,563 INFO L226 Difference]: Without dead ends: 164 [2022-01-11 05:56:07,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:07,565 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:07,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 123 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:56:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-11 05:56:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-01-11 05:56:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2576687116564418) internal successors, (205), 163 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 205 transitions. [2022-01-11 05:56:07,575 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 205 transitions. Word has length 35 [2022-01-11 05:56:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:07,575 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 205 transitions. [2022-01-11 05:56:07,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 205 transitions. [2022-01-11 05:56:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 05:56:07,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:07,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:07,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:56:07,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash 370301329, now seen corresponding path program 1 times [2022-01-11 05:56:07,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:07,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552311986] [2022-01-11 05:56:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:07,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:07,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:07,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552311986] [2022-01-11 05:56:07,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552311986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:07,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:07,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:56:07,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991957486] [2022-01-11 05:56:07,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:07,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:56:07,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:56:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:07,660 INFO L87 Difference]: Start difference. First operand 164 states and 205 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:07,691 INFO L93 Difference]: Finished difference Result 385 states and 483 transitions. [2022-01-11 05:56:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:56:07,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-11 05:56:07,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:07,693 INFO L225 Difference]: With dead ends: 385 [2022-01-11 05:56:07,693 INFO L226 Difference]: Without dead ends: 229 [2022-01-11 05:56:07,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:56:07,695 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 30 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:07,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 211 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:56:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-11 05:56:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-01-11 05:56:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.2412280701754386) internal successors, (283), 228 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 283 transitions. [2022-01-11 05:56:07,717 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 283 transitions. Word has length 42 [2022-01-11 05:56:07,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:07,717 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 283 transitions. [2022-01-11 05:56:07,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 283 transitions. [2022-01-11 05:56:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 05:56:07,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:07,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:07,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:56:07,719 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash -991015433, now seen corresponding path program 1 times [2022-01-11 05:56:07,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:07,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134642224] [2022-01-11 05:56:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:07,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:07,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134642224] [2022-01-11 05:56:07,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134642224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:07,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:07,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:56:07,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037557336] [2022-01-11 05:56:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:07,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:56:07,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:56:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:56:07,818 INFO L87 Difference]: Start difference. First operand 229 states and 283 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:08,031 INFO L93 Difference]: Finished difference Result 1117 states and 1401 transitions. [2022-01-11 05:56:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:56:08,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 05:56:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:08,035 INFO L225 Difference]: With dead ends: 1117 [2022-01-11 05:56:08,035 INFO L226 Difference]: Without dead ends: 961 [2022-01-11 05:56:08,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:56:08,037 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 577 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:08,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 965 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:56:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-01-11 05:56:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 390. [2022-01-11 05:56:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.2339331619537275) internal successors, (480), 389 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 480 transitions. [2022-01-11 05:56:08,066 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 480 transitions. Word has length 44 [2022-01-11 05:56:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:08,067 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 480 transitions. [2022-01-11 05:56:08,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 480 transitions. [2022-01-11 05:56:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 05:56:08,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:08,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:08,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:56:08,068 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:08,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1096851328, now seen corresponding path program 1 times [2022-01-11 05:56:08,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:08,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452473740] [2022-01-11 05:56:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:08,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:08,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:08,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452473740] [2022-01-11 05:56:08,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452473740] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:56:08,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382650612] [2022-01-11 05:56:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:08,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:56:08,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:56:08,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:56:08,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:56:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:08,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-11 05:56:08,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:56:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:08,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:56:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:56:08,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382650612] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:56:08,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:56:08,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-11 05:56:08,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229701883] [2022-01-11 05:56:08,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:56:08,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:56:08,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:56:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:56:08,570 INFO L87 Difference]: Start difference. First operand 390 states and 480 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:08,700 INFO L93 Difference]: Finished difference Result 915 states and 1143 transitions. [2022-01-11 05:56:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:56:08,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 05:56:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:08,703 INFO L225 Difference]: With dead ends: 915 [2022-01-11 05:56:08,703 INFO L226 Difference]: Without dead ends: 533 [2022-01-11 05:56:08,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:56:08,705 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 245 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:08,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 494 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:56:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-11 05:56:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 350. [2022-01-11 05:56:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.2120343839541547) internal successors, (423), 349 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 423 transitions. [2022-01-11 05:56:08,751 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 423 transitions. Word has length 80 [2022-01-11 05:56:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:08,752 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 423 transitions. [2022-01-11 05:56:08,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 423 transitions. [2022-01-11 05:56:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-11 05:56:08,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:08,755 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:08,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 05:56:08,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-11 05:56:08,973 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash -531394560, now seen corresponding path program 1 times [2022-01-11 05:56:08,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:08,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909420774] [2022-01-11 05:56:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:08,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 76 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 05:56:09,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909420774] [2022-01-11 05:56:09,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909420774] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:56:09,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075793839] [2022-01-11 05:56:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:09,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:56:09,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:56:09,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:56:09,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:56:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:09,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 05:56:09,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:56:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 05:56:09,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:56:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 05:56:09,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075793839] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:56:09,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:56:09,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-11 05:56:09,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945590355] [2022-01-11 05:56:09,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:56:09,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 05:56:09,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:09,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 05:56:09,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:56:09,688 INFO L87 Difference]: Start difference. First operand 350 states and 423 transitions. Second operand has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:10,942 INFO L93 Difference]: Finished difference Result 4472 states and 5474 transitions. [2022-01-11 05:56:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-11 05:56:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 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 139 [2022-01-11 05:56:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:10,951 INFO L225 Difference]: With dead ends: 4472 [2022-01-11 05:56:10,951 INFO L226 Difference]: Without dead ends: 3765 [2022-01-11 05:56:10,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=881, Invalid=3811, Unknown=0, NotChecked=0, Total=4692 [2022-01-11 05:56:10,953 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 2357 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2357 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:10,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2357 Valid, 2029 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:56:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2022-01-11 05:56:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 894. [2022-01-11 05:56:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1914893617021276) internal successors, (1064), 893 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1064 transitions. [2022-01-11 05:56:11,039 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1064 transitions. Word has length 139 [2022-01-11 05:56:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:11,039 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1064 transitions. [2022-01-11 05:56:11,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1064 transitions. [2022-01-11 05:56:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 05:56:11,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:11,040 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:11,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 05:56:11,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 05:56:11,258 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash -470038324, now seen corresponding path program 1 times [2022-01-11 05:56:11,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:11,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12469976] [2022-01-11 05:56:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:11,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-11 05:56:11,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:11,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12469976] [2022-01-11 05:56:11,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12469976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:11,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:11,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:56:11,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756469315] [2022-01-11 05:56:11,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:11,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:56:11,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:11,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:56:11,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:56:11,339 INFO L87 Difference]: Start difference. First operand 894 states and 1064 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:11,586 INFO L93 Difference]: Finished difference Result 2801 states and 3341 transitions. [2022-01-11 05:56:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:56:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 143 [2022-01-11 05:56:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:11,591 INFO L225 Difference]: With dead ends: 2801 [2022-01-11 05:56:11,591 INFO L226 Difference]: Without dead ends: 1915 [2022-01-11 05:56:11,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:56:11,593 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 503 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:11,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 848 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:56:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2022-01-11 05:56:11,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 835. [2022-01-11 05:56:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.1738609112709832) internal successors, (979), 834 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 979 transitions. [2022-01-11 05:56:11,676 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 979 transitions. Word has length 143 [2022-01-11 05:56:11,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:11,676 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 979 transitions. [2022-01-11 05:56:11,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:11,676 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 979 transitions. [2022-01-11 05:56:11,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 05:56:11,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:11,678 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:11,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:56:11,678 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2037820532, now seen corresponding path program 2 times [2022-01-11 05:56:11,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:11,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374589936] [2022-01-11 05:56:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:11,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 05:56:11,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:11,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374589936] [2022-01-11 05:56:11,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374589936] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:56:11,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892578677] [2022-01-11 05:56:11,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:56:11,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:56:11,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:56:11,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:56:11,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 05:56:11,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:56:11,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:56:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 05:56:11,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:56:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-11 05:56:12,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 05:56:12,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892578677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:12,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 05:56:12,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-01-11 05:56:12,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718493269] [2022-01-11 05:56:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:12,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:56:12,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:12,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:56:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:56:12,289 INFO L87 Difference]: Start difference. First operand 835 states and 979 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:12,697 INFO L93 Difference]: Finished difference Result 2565 states and 3016 transitions. [2022-01-11 05:56:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:56:12,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 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 143 [2022-01-11 05:56:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:12,702 INFO L225 Difference]: With dead ends: 2565 [2022-01-11 05:56:12,702 INFO L226 Difference]: Without dead ends: 2101 [2022-01-11 05:56:12,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-01-11 05:56:12,704 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 588 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:12,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 887 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:56:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2022-01-11 05:56:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1060. [2022-01-11 05:56:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.166194523135033) internal successors, (1235), 1059 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1235 transitions. [2022-01-11 05:56:12,880 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1235 transitions. Word has length 143 [2022-01-11 05:56:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:12,880 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1235 transitions. [2022-01-11 05:56:12,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1235 transitions. [2022-01-11 05:56:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 05:56:12,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:56:12,882 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:56:12,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 05:56:13,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:56:13,105 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:56:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:56:13,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1917700659, now seen corresponding path program 1 times [2022-01-11 05:56:13,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:56:13,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757640859] [2022-01-11 05:56:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:56:13,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:56:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:56:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-11 05:56:13,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:56:13,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757640859] [2022-01-11 05:56:13,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757640859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:56:13,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:56:13,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:56:13,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173737256] [2022-01-11 05:56:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:56:13,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:56:13,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:56:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:56:13,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:56:13,152 INFO L87 Difference]: Start difference. First operand 1060 states and 1235 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:56:13,286 INFO L93 Difference]: Finished difference Result 2112 states and 2451 transitions. [2022-01-11 05:56:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:56:13,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 05:56:13,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:56:13,287 INFO L225 Difference]: With dead ends: 2112 [2022-01-11 05:56:13,287 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 05:56:13,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:56:13,289 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 257 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:56:13,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 588 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:56:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 05:56:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 05:56:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 05:56:13,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2022-01-11 05:56:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:56:13,290 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 05:56:13,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:56:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 05:56:13,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 05:56:13,292 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 05:56:13,292 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 05:56:13,293 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 05:56:13,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:56:13,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 05:56:49,352 WARN L228 SmtUtils]: Spent 36.05s on a formula simplification. DAG size of input: 347 DAG size of output: 345 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 05:57:12,613 WARN L228 SmtUtils]: Spent 21.33s on a formula simplification. DAG size of input: 187 DAG size of output: 160 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)