/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:07:47,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:07:47,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:07:47,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:07:47,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:07:47,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:07:47,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:07:47,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:07:47,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:07:47,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:07:47,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:07:47,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:07:47,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:07:47,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:07:47,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:07:47,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:07:47,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:07:47,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:07:47,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:07:47,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:07:47,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:07:47,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:07:47,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:07:47,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:07:47,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:07:47,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:07:47,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:07:47,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:07:47,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:07:47,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:07:47,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:07:47,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:07:47,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:07:47,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:07:47,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:07:47,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:07:47,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:07:47,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:07:47,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:07:47,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:07:47,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:07:47,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:07:47,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:07:47,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:07:47,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:07:47,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:07:47,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:07:47,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:07:47,176 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:07:47,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:07:47,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:07:47,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:07:47,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:07:47,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:07:47,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:07:47,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:07:47,177 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:07:47,178 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:07:47,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:07:47,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:07:47,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:07:47,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:07:47,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:07:47,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:47,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:07:47,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:07:47,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:07:47,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:07:47,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:07:47,179 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:07:47,179 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:07:47,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:07:47,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:07:47,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:07:47,181 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:07:47,181 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:07:47,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:07:47,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:07:47,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:07:47,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:07:47,431 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:07:47,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c [2022-01-10 18:07:47,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab2fa030/415c95434bcf47bb8d6eeebe6977de9a/FLAG3cd70ed8a [2022-01-10 18:07:48,030 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:07:48,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product16.cil.c [2022-01-10 18:07:48,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab2fa030/415c95434bcf47bb8d6eeebe6977de9a/FLAG3cd70ed8a [2022-01-10 18:07:48,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab2fa030/415c95434bcf47bb8d6eeebe6977de9a [2022-01-10 18:07:48,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:07:48,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:07:48,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:48,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:07:48,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:07:48,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:48" (1/1) ... [2022-01-10 18:07:48,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5ee7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:48, skipping insertion in model container [2022-01-10 18:07:48,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:48" (1/1) ... [2022-01-10 18:07:48,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:07:48,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:48,829 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/email_spec6_product16.cil.c[39829,39842] [2022-01-10 18:07:48,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:48,945 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:07:48,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:49,016 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/email_spec6_product16.cil.c[39829,39842] [2022-01-10 18:07:49,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:49,068 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:07:49,130 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/email_spec6_product16.cil.c[39829,39842] [2022-01-10 18:07:49,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:49,184 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:07:49,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49 WrapperNode [2022-01-10 18:07:49,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:49,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:49,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:07:49,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:07:49,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,328 INFO L137 Inliner]: procedures = 128, calls = 203, calls flagged for inlining = 113, calls inlined = 151, statements flattened = 2278 [2022-01-10 18:07:49,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:49,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:07:49,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:07:49,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:07:49,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:07:49,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:07:49,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:07:49,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:07:49,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (1/1) ... [2022-01-10 18:07:49,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:49,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:07:49,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:07:49,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:07:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:07:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:07:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:07:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:07:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:07:49,731 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:07:49,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:07:51,006 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:07:51,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:07:51,027 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:07:51,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:51 BoogieIcfgContainer [2022-01-10 18:07:51,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:07:51,031 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:07:51,031 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:07:51,033 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:07:51,036 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:51" (1/1) ... [2022-01-10 18:07:51,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:51 BasicIcfg [2022-01-10 18:07:51,372 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:07:51,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:07:51,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:07:51,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:07:51,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:07:48" (1/4) ... [2022-01-10 18:07:51,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53675faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:51, skipping insertion in model container [2022-01-10 18:07:51,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:49" (2/4) ... [2022-01-10 18:07:51,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53675faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:51, skipping insertion in model container [2022-01-10 18:07:51,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:51" (3/4) ... [2022-01-10 18:07:51,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53675faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:07:51, skipping insertion in model container [2022-01-10 18:07:51,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:51" (4/4) ... [2022-01-10 18:07:51,379 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product16.cil.cTransformedIcfg [2022-01-10 18:07:51,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:07:51,383 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:07:51,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:07:51,425 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:07:51,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:07:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 506 states, 503 states have (on average 1.68389662027833) internal successors, (847), 505 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:07:51,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:51,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:51,458 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:51,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash -488767503, now seen corresponding path program 1 times [2022-01-10 18:07:51,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:51,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660298031] [2022-01-10 18:07:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:51,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:51,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:51,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660298031] [2022-01-10 18:07:51,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660298031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:51,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:51,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:07:51,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819062121] [2022-01-10 18:07:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:51,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:07:51,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:07:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:07:51,946 INFO L87 Difference]: Start difference. First operand has 506 states, 503 states have (on average 1.68389662027833) internal successors, (847), 505 states have internal predecessors, (847), 0 states have call successors, (0), 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 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:52,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:52,023 INFO L93 Difference]: Finished difference Result 751 states and 1234 transitions. [2022-01-10 18:07:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:07:52,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 18:07:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:52,037 INFO L225 Difference]: With dead ends: 751 [2022-01-10 18:07:52,038 INFO L226 Difference]: Without dead ends: 434 [2022-01-10 18:07:52,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:07:52,044 INFO L933 BasicCegarLoop]: 841 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, 841 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:52,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-10 18:07:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-01-10 18:07:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 1.6967592592592593) internal successors, (733), 433 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 733 transitions. [2022-01-10 18:07:52,111 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 733 transitions. Word has length 57 [2022-01-10 18:07:52,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:52,111 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 733 transitions. [2022-01-10 18:07:52,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:52,112 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 733 transitions. [2022-01-10 18:07:52,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:07:52,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:52,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:52,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:07:52,116 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:52,117 INFO L85 PathProgramCache]: Analyzing trace with hash 224008055, now seen corresponding path program 1 times [2022-01-10 18:07:52,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:52,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989068430] [2022-01-10 18:07:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:52,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:52,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:52,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989068430] [2022-01-10 18:07:52,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989068430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:52,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:52,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:52,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965517177] [2022-01-10 18:07:52,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:52,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:52,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:52,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:52,429 INFO L87 Difference]: Start difference. First operand 434 states and 733 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:52,549 INFO L93 Difference]: Finished difference Result 849 states and 1438 transitions. [2022-01-10 18:07:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:52,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 18:07:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:52,555 INFO L225 Difference]: With dead ends: 849 [2022-01-10 18:07:52,555 INFO L226 Difference]: Without dead ends: 434 [2022-01-10 18:07:52,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:52,558 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 708 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:52,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 727 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-10 18:07:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-01-10 18:07:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 1.6921296296296295) internal successors, (731), 433 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 731 transitions. [2022-01-10 18:07:52,598 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 731 transitions. Word has length 58 [2022-01-10 18:07:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:52,599 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 731 transitions. [2022-01-10 18:07:52,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 731 transitions. [2022-01-10 18:07:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:07:52,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:52,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:52,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:07:52,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1524216183, now seen corresponding path program 1 times [2022-01-10 18:07:52,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:52,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021798711] [2022-01-10 18:07:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:52,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:52,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:52,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021798711] [2022-01-10 18:07:52,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021798711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:52,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:52,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:52,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678504987] [2022-01-10 18:07:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:52,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:52,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:52,794 INFO L87 Difference]: Start difference. First operand 434 states and 731 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:53,035 INFO L93 Difference]: Finished difference Result 2038 states and 3451 transitions. [2022-01-10 18:07:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:07:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:07:53,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:53,045 INFO L225 Difference]: With dead ends: 2038 [2022-01-10 18:07:53,045 INFO L226 Difference]: Without dead ends: 1628 [2022-01-10 18:07:53,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:53,053 INFO L933 BasicCegarLoop]: 1385 mSDtfsCounter, 3438 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:53,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3438 Valid, 3450 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2022-01-10 18:07:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 434. [2022-01-10 18:07:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 1.6898148148148149) internal successors, (730), 433 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 730 transitions. [2022-01-10 18:07:53,123 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 730 transitions. Word has length 60 [2022-01-10 18:07:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:53,124 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 730 transitions. [2022-01-10 18:07:53,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 730 transitions. [2022-01-10 18:07:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:07:53,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:53,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:53,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:07:53,130 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash -21104309, now seen corresponding path program 1 times [2022-01-10 18:07:53,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:53,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915626993] [2022-01-10 18:07:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:53,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:53,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915626993] [2022-01-10 18:07:53,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915626993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:53,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:53,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:53,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446204690] [2022-01-10 18:07:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:53,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:53,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:53,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:53,273 INFO L87 Difference]: Start difference. First operand 434 states and 730 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:53,321 INFO L93 Difference]: Finished difference Result 853 states and 1438 transitions. [2022-01-10 18:07:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:53,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 18:07:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:53,325 INFO L225 Difference]: With dead ends: 853 [2022-01-10 18:07:53,325 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 18:07:53,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:53,335 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 709 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:53,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 766 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:53,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 18:07:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 434. [2022-01-10 18:07:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 1.6875) internal successors, (729), 433 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 729 transitions. [2022-01-10 18:07:53,374 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 729 transitions. Word has length 61 [2022-01-10 18:07:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:53,376 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 729 transitions. [2022-01-10 18:07:53,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 729 transitions. [2022-01-10 18:07:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:07:53,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:53,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:53,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:07:53,379 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -228002698, now seen corresponding path program 1 times [2022-01-10 18:07:53,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:53,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963686869] [2022-01-10 18:07:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:53,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:53,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:53,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963686869] [2022-01-10 18:07:53,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963686869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:53,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:53,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:53,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927144521] [2022-01-10 18:07:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:53,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:53,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:53,552 INFO L87 Difference]: Start difference. First operand 434 states and 729 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:53,712 INFO L93 Difference]: Finished difference Result 1236 states and 2087 transitions. [2022-01-10 18:07:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 18:07:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:53,717 INFO L225 Difference]: With dead ends: 1236 [2022-01-10 18:07:53,718 INFO L226 Difference]: Without dead ends: 836 [2022-01-10 18:07:53,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:53,719 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 3361 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:53,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3361 Valid, 1490 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-01-10 18:07:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 434. [2022-01-10 18:07:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 1.6828703703703705) internal successors, (727), 433 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 727 transitions. [2022-01-10 18:07:53,792 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 727 transitions. Word has length 62 [2022-01-10 18:07:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:53,797 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 727 transitions. [2022-01-10 18:07:53,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 727 transitions. [2022-01-10 18:07:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:07:53,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:53,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:53,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:07:53,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:53,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:53,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1450557895, now seen corresponding path program 1 times [2022-01-10 18:07:53,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:53,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969455624] [2022-01-10 18:07:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:53,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:53,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:53,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969455624] [2022-01-10 18:07:53,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969455624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:53,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:53,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:53,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524457173] [2022-01-10 18:07:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:53,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:53,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:53,946 INFO L87 Difference]: Start difference. First operand 434 states and 727 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:54,214 INFO L93 Difference]: Finished difference Result 1279 states and 2038 transitions. [2022-01-10 18:07:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:54,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 18:07:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:54,222 INFO L225 Difference]: With dead ends: 1279 [2022-01-10 18:07:54,222 INFO L226 Difference]: Without dead ends: 1134 [2022-01-10 18:07:54,224 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 [2022-01-10 18:07:54,226 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1984 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:54,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1984 Valid, 2778 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-01-10 18:07:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 572. [2022-01-10 18:07:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 570 states have (on average 1.6526315789473685) internal successors, (942), 571 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 942 transitions. [2022-01-10 18:07:54,284 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 942 transitions. Word has length 64 [2022-01-10 18:07:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:54,284 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 942 transitions. [2022-01-10 18:07:54,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 942 transitions. [2022-01-10 18:07:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:07:54,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:54,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:54,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:07:54,286 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1374733489, now seen corresponding path program 1 times [2022-01-10 18:07:54,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:54,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633558066] [2022-01-10 18:07:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:54,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:54,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633558066] [2022-01-10 18:07:54,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633558066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:54,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:54,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:07:54,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024355617] [2022-01-10 18:07:54,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:54,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:07:54,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:07:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:54,455 INFO L87 Difference]: Start difference. First operand 572 states and 942 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:54,652 INFO L93 Difference]: Finished difference Result 996 states and 1597 transitions. [2022-01-10 18:07:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:07:54,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:07:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:54,656 INFO L225 Difference]: With dead ends: 996 [2022-01-10 18:07:54,657 INFO L226 Difference]: Without dead ends: 744 [2022-01-10 18:07:54,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:07:54,659 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1552 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:54,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 3424 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-01-10 18:07:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 555. [2022-01-10 18:07:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 553 states have (on average 1.6491862567811935) internal successors, (912), 554 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 912 transitions. [2022-01-10 18:07:54,714 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 912 transitions. Word has length 65 [2022-01-10 18:07:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:54,714 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 912 transitions. [2022-01-10 18:07:54,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 912 transitions. [2022-01-10 18:07:54,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:07:54,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:54,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:54,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:07:54,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:54,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1437984998, now seen corresponding path program 1 times [2022-01-10 18:07:54,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:54,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601484093] [2022-01-10 18:07:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:54,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:54,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:54,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601484093] [2022-01-10 18:07:54,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601484093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:54,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:54,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:54,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263772448] [2022-01-10 18:07:54,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:54,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:54,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:54,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:54,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:54,856 INFO L87 Difference]: Start difference. First operand 555 states and 912 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:55,185 INFO L93 Difference]: Finished difference Result 2063 states and 3262 transitions. [2022-01-10 18:07:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:55,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 18:07:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:55,194 INFO L225 Difference]: With dead ends: 2063 [2022-01-10 18:07:55,195 INFO L226 Difference]: Without dead ends: 1789 [2022-01-10 18:07:55,196 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 [2022-01-10 18:07:55,196 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 1897 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:55,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 3122 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2022-01-10 18:07:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1011. [2022-01-10 18:07:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1009 states have (on average 1.6560951437066402) internal successors, (1671), 1010 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1671 transitions. [2022-01-10 18:07:55,311 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1671 transitions. Word has length 68 [2022-01-10 18:07:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:55,312 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 1671 transitions. [2022-01-10 18:07:55,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1671 transitions. [2022-01-10 18:07:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:07:55,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:55,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:55,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:07:55,319 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1188156681, now seen corresponding path program 1 times [2022-01-10 18:07:55,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:55,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856343222] [2022-01-10 18:07:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:55,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:55,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:55,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856343222] [2022-01-10 18:07:55,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856343222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:55,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:55,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:55,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621258081] [2022-01-10 18:07:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:55,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:55,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:55,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:55,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:55,455 INFO L87 Difference]: Start difference. First operand 1011 states and 1671 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:55,942 INFO L93 Difference]: Finished difference Result 3204 states and 5131 transitions. [2022-01-10 18:07:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:07:55,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:07:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:55,954 INFO L225 Difference]: With dead ends: 3204 [2022-01-10 18:07:55,954 INFO L226 Difference]: Without dead ends: 2718 [2022-01-10 18:07:55,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:55,959 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 1331 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:55,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 3340 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:55,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2022-01-10 18:07:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 1913. [2022-01-10 18:07:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.662480376766091) internal successors, (3177), 1912 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 3177 transitions. [2022-01-10 18:07:56,183 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 3177 transitions. Word has length 69 [2022-01-10 18:07:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:56,183 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 3177 transitions. [2022-01-10 18:07:56,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 3177 transitions. [2022-01-10 18:07:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:07:56,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:56,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:56,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:07:56,187 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1957073767, now seen corresponding path program 1 times [2022-01-10 18:07:56,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:56,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954244021] [2022-01-10 18:07:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:56,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:56,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:56,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954244021] [2022-01-10 18:07:56,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954244021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:56,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:56,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:56,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080944775] [2022-01-10 18:07:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:56,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:56,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:56,320 INFO L87 Difference]: Start difference. First operand 1913 states and 3177 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:56,595 INFO L93 Difference]: Finished difference Result 2818 states and 4555 transitions. [2022-01-10 18:07:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:07:56,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:07:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:56,619 INFO L225 Difference]: With dead ends: 2818 [2022-01-10 18:07:56,619 INFO L226 Difference]: Without dead ends: 1894 [2022-01-10 18:07:56,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:07:56,621 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1441 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:56,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 2219 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-01-10 18:07:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1836. [2022-01-10 18:07:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1834 states have (on average 1.6564885496183206) internal successors, (3038), 1835 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 3038 transitions. [2022-01-10 18:07:56,839 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 3038 transitions. Word has length 69 [2022-01-10 18:07:56,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:56,840 INFO L470 AbstractCegarLoop]: Abstraction has 1836 states and 3038 transitions. [2022-01-10 18:07:56,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:56,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 3038 transitions. [2022-01-10 18:07:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 18:07:56,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:56,843 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:56,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:07:56,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1088493180, now seen corresponding path program 1 times [2022-01-10 18:07:56,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672520596] [2022-01-10 18:07:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:56,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:56,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:56,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672520596] [2022-01-10 18:07:56,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672520596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:56,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:56,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:56,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468519627] [2022-01-10 18:07:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:56,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:56,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:56,931 INFO L87 Difference]: Start difference. First operand 1836 states and 3038 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:57,321 INFO L93 Difference]: Finished difference Result 5226 states and 8632 transitions. [2022-01-10 18:07:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 18:07:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:57,335 INFO L225 Difference]: With dead ends: 5226 [2022-01-10 18:07:57,336 INFO L226 Difference]: Without dead ends: 3427 [2022-01-10 18:07:57,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:57,340 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 661 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:57,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1330 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2022-01-10 18:07:57,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2516. [2022-01-10 18:07:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2514 states have (on average 1.690533015115354) internal successors, (4250), 2515 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 4250 transitions. [2022-01-10 18:07:57,625 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 4250 transitions. Word has length 87 [2022-01-10 18:07:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:57,625 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 4250 transitions. [2022-01-10 18:07:57,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 4250 transitions. [2022-01-10 18:07:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 18:07:57,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:57,630 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:57,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:07:57,631 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash 10271405, now seen corresponding path program 1 times [2022-01-10 18:07:57,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:57,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514867391] [2022-01-10 18:07:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:57,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:57,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:57,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514867391] [2022-01-10 18:07:57,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514867391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:57,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:57,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:57,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263263785] [2022-01-10 18:07:57,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:57,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:57,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:57,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:57,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:57,704 INFO L87 Difference]: Start difference. First operand 2516 states and 4250 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:58,181 INFO L93 Difference]: Finished difference Result 7466 states and 12636 transitions. [2022-01-10 18:07:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:58,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 18:07:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:58,203 INFO L225 Difference]: With dead ends: 7466 [2022-01-10 18:07:58,203 INFO L226 Difference]: Without dead ends: 4987 [2022-01-10 18:07:58,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:58,209 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 659 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:58,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 1424 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2022-01-10 18:07:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4076. [2022-01-10 18:07:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 4074 states have (on average 1.727540500736377) internal successors, (7038), 4075 states have internal predecessors, (7038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 7038 transitions. [2022-01-10 18:07:58,635 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 7038 transitions. Word has length 88 [2022-01-10 18:07:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:58,636 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 7038 transitions. [2022-01-10 18:07:58,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 7038 transitions. [2022-01-10 18:07:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 18:07:58,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:58,645 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:58,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:07:58,646 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash 546833749, now seen corresponding path program 1 times [2022-01-10 18:07:58,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:58,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460859434] [2022-01-10 18:07:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:58,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:58,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460859434] [2022-01-10 18:07:58,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460859434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:58,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:58,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:58,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069815957] [2022-01-10 18:07:58,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:58,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:58,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:58,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:58,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:58,720 INFO L87 Difference]: Start difference. First operand 4076 states and 7038 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:59,373 INFO L93 Difference]: Finished difference Result 12058 states and 20856 transitions. [2022-01-10 18:07:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 18:07:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:59,411 INFO L225 Difference]: With dead ends: 12058 [2022-01-10 18:07:59,411 INFO L226 Difference]: Without dead ends: 8019 [2022-01-10 18:07:59,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:59,421 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 657 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:59,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 1416 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8019 states. [2022-01-10 18:07:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8019 to 7108. [2022-01-10 18:07:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 7106 states have (on average 1.7537292428933295) internal successors, (12462), 7107 states have internal predecessors, (12462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 12462 transitions. [2022-01-10 18:07:59,985 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 12462 transitions. Word has length 89 [2022-01-10 18:07:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:59,985 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 12462 transitions. [2022-01-10 18:07:59,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 12462 transitions. [2022-01-10 18:08:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:08:00,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:00,002 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:00,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:08:00,003 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash -413144981, now seen corresponding path program 1 times [2022-01-10 18:08:00,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:00,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296196272] [2022-01-10 18:08:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:00,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:00,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:00,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296196272] [2022-01-10 18:08:00,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296196272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:00,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:00,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:08:00,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642336088] [2022-01-10 18:08:00,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:00,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:08:00,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:00,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:08:00,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:08:00,237 INFO L87 Difference]: Start difference. First operand 7108 states and 12462 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:05,832 INFO L93 Difference]: Finished difference Result 31221 states and 50200 transitions. [2022-01-10 18:08:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-10 18:08:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 18:08:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:05,929 INFO L225 Difference]: With dead ends: 31221 [2022-01-10 18:08:05,929 INFO L226 Difference]: Without dead ends: 31091 [2022-01-10 18:08:05,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3453 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1587, Invalid=7155, Unknown=0, NotChecked=0, Total=8742 [2022-01-10 18:08:05,947 INFO L933 BasicCegarLoop]: 1605 mSDtfsCounter, 11617 mSDsluCounter, 13314 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11617 SdHoareTripleChecker+Valid, 14919 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:05,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11617 Valid, 14919 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 18:08:05,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31091 states. [2022-01-10 18:08:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31091 to 11053. [2022-01-10 18:08:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11053 states, 11051 states have (on average 1.7460863270292282) internal successors, (19296), 11052 states have internal predecessors, (19296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11053 states to 11053 states and 19296 transitions. [2022-01-10 18:08:07,100 INFO L78 Accepts]: Start accepts. Automaton has 11053 states and 19296 transitions. Word has length 90 [2022-01-10 18:08:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:07,100 INFO L470 AbstractCegarLoop]: Abstraction has 11053 states and 19296 transitions. [2022-01-10 18:08:07,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 11053 states and 19296 transitions. [2022-01-10 18:08:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:08:07,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:07,124 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:07,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:08:07,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1348210195, now seen corresponding path program 1 times [2022-01-10 18:08:07,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160599004] [2022-01-10 18:08:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:07,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:07,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:07,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160599004] [2022-01-10 18:08:07,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160599004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:07,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:07,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:08:07,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900210206] [2022-01-10 18:08:07,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:07,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:08:07,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:08:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:08:07,243 INFO L87 Difference]: Start difference. First operand 11053 states and 19296 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:08,737 INFO L93 Difference]: Finished difference Result 30805 states and 53326 transitions. [2022-01-10 18:08:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:08:08,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 18:08:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:08,782 INFO L225 Difference]: With dead ends: 30805 [2022-01-10 18:08:08,783 INFO L226 Difference]: Without dead ends: 19789 [2022-01-10 18:08:08,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:08:08,802 INFO L933 BasicCegarLoop]: 1261 mSDtfsCounter, 1238 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:08,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1925 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:08:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19789 states. [2022-01-10 18:08:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19789 to 10813. [2022-01-10 18:08:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10813 states, 10811 states have (on average 1.7315696975302932) internal successors, (18720), 10812 states have internal predecessors, (18720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10813 states to 10813 states and 18720 transitions. [2022-01-10 18:08:09,756 INFO L78 Accepts]: Start accepts. Automaton has 10813 states and 18720 transitions. Word has length 90 [2022-01-10 18:08:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:09,756 INFO L470 AbstractCegarLoop]: Abstraction has 10813 states and 18720 transitions. [2022-01-10 18:08:09,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 10813 states and 18720 transitions. [2022-01-10 18:08:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 18:08:09,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:09,778 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:09,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:08:09,778 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:09,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -536619930, now seen corresponding path program 1 times [2022-01-10 18:08:09,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:09,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986740647] [2022-01-10 18:08:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:09,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:08:09,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:09,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986740647] [2022-01-10 18:08:09,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986740647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:09,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:09,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:08:09,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975619337] [2022-01-10 18:08:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:09,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:08:09,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:08:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:08:09,923 INFO L87 Difference]: Start difference. First operand 10813 states and 18720 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:12,802 INFO L93 Difference]: Finished difference Result 21340 states and 34327 transitions. [2022-01-10 18:08:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 18:08:12,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 91 [2022-01-10 18:08:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:12,847 INFO L225 Difference]: With dead ends: 21340 [2022-01-10 18:08:12,847 INFO L226 Difference]: Without dead ends: 20399 [2022-01-10 18:08:12,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2022-01-10 18:08:12,856 INFO L933 BasicCegarLoop]: 1205 mSDtfsCounter, 1956 mSDsluCounter, 4991 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:12,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1956 Valid, 6196 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:08:12,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20399 states. [2022-01-10 18:08:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20399 to 12187. [2022-01-10 18:08:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12187 states, 12185 states have (on average 1.7078375051292574) internal successors, (20810), 12186 states have internal predecessors, (20810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12187 states to 12187 states and 20810 transitions. [2022-01-10 18:08:13,924 INFO L78 Accepts]: Start accepts. Automaton has 12187 states and 20810 transitions. Word has length 91 [2022-01-10 18:08:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:13,924 INFO L470 AbstractCegarLoop]: Abstraction has 12187 states and 20810 transitions. [2022-01-10 18:08:13,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 12187 states and 20810 transitions. [2022-01-10 18:08:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 18:08:13,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:13,946 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:13,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:08:13,946 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash 545599566, now seen corresponding path program 1 times [2022-01-10 18:08:13,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:13,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217799643] [2022-01-10 18:08:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:13,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:08:14,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217799643] [2022-01-10 18:08:14,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217799643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:14,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:14,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:08:14,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618932287] [2022-01-10 18:08:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:14,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:08:14,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:08:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:08:14,100 INFO L87 Difference]: Start difference. First operand 12187 states and 20810 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:20,246 INFO L93 Difference]: Finished difference Result 59954 states and 100149 transitions. [2022-01-10 18:08:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:08:20,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 92 [2022-01-10 18:08:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:20,358 INFO L225 Difference]: With dead ends: 59954 [2022-01-10 18:08:20,358 INFO L226 Difference]: Without dead ends: 58878 [2022-01-10 18:08:20,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:08:20,378 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 3857 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3857 SdHoareTripleChecker+Valid, 5822 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:20,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3857 Valid, 5822 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:08:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58878 states. [2022-01-10 18:08:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58878 to 24426. [2022-01-10 18:08:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24426 states, 24424 states have (on average 1.7072142155257124) internal successors, (41697), 24425 states have internal predecessors, (41697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24426 states to 24426 states and 41697 transitions. [2022-01-10 18:08:22,804 INFO L78 Accepts]: Start accepts. Automaton has 24426 states and 41697 transitions. Word has length 92 [2022-01-10 18:08:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:22,804 INFO L470 AbstractCegarLoop]: Abstraction has 24426 states and 41697 transitions. [2022-01-10 18:08:22,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 24426 states and 41697 transitions. [2022-01-10 18:08:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 18:08:22,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:22,843 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:22,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:08:22,843 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:08:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 545629357, now seen corresponding path program 1 times [2022-01-10 18:08:22,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:22,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139023783] [2022-01-10 18:08:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:22,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:23,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139023783] [2022-01-10 18:08:23,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139023783] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:08:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553009294] [2022-01-10 18:08:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:23,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:08:23,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:08:23,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:08:23,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:08:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-10 18:08:23,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:08:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:08:24,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 18:08:24,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553009294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:24,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 18:08:24,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [16] total 26 [2022-01-10 18:08:24,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50233485] [2022-01-10 18:08:24,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:24,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 18:08:24,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:24,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 18:08:24,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-01-10 18:08:24,356 INFO L87 Difference]: Start difference. First operand 24426 states and 41697 transitions. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:08:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:41,715 INFO L93 Difference]: Finished difference Result 83676 states and 137204 transitions. [2022-01-10 18:08:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2022-01-10 18:08:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 18:08:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:41,854 INFO L225 Difference]: With dead ends: 83676 [2022-01-10 18:08:41,855 INFO L226 Difference]: Without dead ends: 82844 [2022-01-10 18:08:41,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23817 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8575, Invalid=46885, Unknown=0, NotChecked=0, Total=55460 [2022-01-10 18:08:41,893 INFO L933 BasicCegarLoop]: 2059 mSDtfsCounter, 11659 mSDsluCounter, 26662 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11659 SdHoareTripleChecker+Valid, 28721 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:41,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11659 Valid, 28721 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 18:08:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82844 states.