/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:28:27,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:28:27,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:28:27,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:28:27,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:28:27,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:28:27,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:28:27,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:28:27,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:28:27,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:28:27,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:28:27,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:28:27,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:28:27,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:28:27,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:28:27,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:28:27,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:28:27,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:28:27,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:28:27,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:28:27,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:28:27,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:28:27,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:28:27,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:28:27,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:28:27,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:28:27,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:28:27,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:28:27,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:28:27,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:28:27,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:28:27,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:28:27,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:28:27,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:28:27,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:28:27,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:28:27,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:28:27,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:28:27,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:28:27,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:28:27,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:28:27,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:28:27,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:28:27,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:28:27,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:28:27,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:28:27,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:28:27,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:28:27,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:28:27,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:28:27,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:28:27,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:28:27,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:28:27,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:28:27,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:28:27,145 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:28:27,145 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:28:27,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:28:27,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:28:27,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:28:27,326 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:28:27,327 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:28:27,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:28:27,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a5636c6/5a6c8d0aa94a4081a49fc1e30402d7d4/FLAG126468f74 [2022-01-11 06:28:27,877 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:28:27,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:28:27,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a5636c6/5a6c8d0aa94a4081a49fc1e30402d7d4/FLAG126468f74 [2022-01-11 06:28:28,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a5636c6/5a6c8d0aa94a4081a49fc1e30402d7d4 [2022-01-11 06:28:28,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:28:28,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:28:28,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:28:28,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:28:28,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:28:28,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:28:28" (1/1) ... [2022-01-11 06:28:28,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe76d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:28, skipping insertion in model container [2022-01-11 06:28:28,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:28:28" (1/1) ... [2022-01-11 06:28:28,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:28:28,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:28:28,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2022-01-11 06:28:28,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:28:28,896 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:28:28,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2022-01-11 06:28:29,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:28:29,086 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:28:29,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29 WrapperNode [2022-01-11 06:28:29,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:28:29,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:28:29,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:28:29,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:28:29,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,187 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2756 [2022-01-11 06:28:29,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:28:29,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:28:29,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:28:29,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:28:29,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:28:29,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:28:29,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:28:29,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:28:29,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (1/1) ... [2022-01-11 06:28:29,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:28:29,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:28:29,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:28:29,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:28:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:28:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:28:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:28:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:28:29,583 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:28:29,584 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:28:30,702 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:28:30,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:28:30,715 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:28:30,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:28:30 BoogieIcfgContainer [2022-01-11 06:28:30,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:28:30,734 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:28:30,734 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:28:30,736 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:28:30,738 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:28:30" (1/1) ... [2022-01-11 06:28:31,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:28:31 BasicIcfg [2022-01-11 06:28:31,408 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:28:31,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:28:31,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:28:31,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:28:31,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:28:28" (1/4) ... [2022-01-11 06:28:31,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a5c26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:28:31, skipping insertion in model container [2022-01-11 06:28:31,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:28:29" (2/4) ... [2022-01-11 06:28:31,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a5c26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:28:31, skipping insertion in model container [2022-01-11 06:28:31,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:28:30" (3/4) ... [2022-01-11 06:28:31,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a5c26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:28:31, skipping insertion in model container [2022-01-11 06:28:31,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:28:31" (4/4) ... [2022-01-11 06:28:31,417 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:28:31,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:28:31,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:28:31,463 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:28:31,468 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:28:31,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:28:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 745 states, 743 states have (on average 1.8371467025572006) internal successors, (1365), 744 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-11 06:28:31,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:31,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:31,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 858377459, now seen corresponding path program 1 times [2022-01-11 06:28:31,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:31,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483714321] [2022-01-11 06:28:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:31,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:32,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:32,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483714321] [2022-01-11 06:28:32,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483714321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:32,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:32,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:28:32,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269540300] [2022-01-11 06:28:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:32,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:28:32,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:28:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:32,357 INFO L87 Difference]: Start difference. First operand has 745 states, 743 states have (on average 1.8371467025572006) internal successors, (1365), 744 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:34,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:28:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:34,679 INFO L93 Difference]: Finished difference Result 1136 states and 2022 transitions. [2022-01-11 06:28:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:28:34,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2022-01-11 06:28:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:34,699 INFO L225 Difference]: With dead ends: 1136 [2022-01-11 06:28:34,699 INFO L226 Difference]: Without dead ends: 928 [2022-01-11 06:28:34,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:34,710 INFO L933 BasicCegarLoop]: 1360 mSDtfsCounter, 352 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:34,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2615 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:28:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-01-11 06:28:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 925. [2022-01-11 06:28:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.7380952380952381) internal successors, (1606), 924 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1606 transitions. [2022-01-11 06:28:34,790 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1606 transitions. Word has length 203 [2022-01-11 06:28:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:34,792 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1606 transitions. [2022-01-11 06:28:34,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1606 transitions. [2022-01-11 06:28:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-11 06:28:34,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:34,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:34,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:28:34,797 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1997239369, now seen corresponding path program 1 times [2022-01-11 06:28:34,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:34,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210439409] [2022-01-11 06:28:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:34,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:35,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:35,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210439409] [2022-01-11 06:28:35,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210439409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:35,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:35,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:28:35,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607789246] [2022-01-11 06:28:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:35,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:28:35,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:28:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:28:35,163 INFO L87 Difference]: Start difference. First operand 925 states and 1606 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:35,368 INFO L93 Difference]: Finished difference Result 2676 states and 4637 transitions. [2022-01-11 06:28:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:28:35,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2022-01-11 06:28:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:35,377 INFO L225 Difference]: With dead ends: 2676 [2022-01-11 06:28:35,378 INFO L226 Difference]: Without dead ends: 1828 [2022-01-11 06:28:35,382 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 [2022-01-11 06:28:35,383 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 3609 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:35,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3609 Valid, 2568 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:28:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2022-01-11 06:28:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1826. [2022-01-11 06:28:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.7315068493150685) internal successors, (3160), 1825 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 3160 transitions. [2022-01-11 06:28:35,473 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 3160 transitions. Word has length 207 [2022-01-11 06:28:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:35,474 INFO L470 AbstractCegarLoop]: Abstraction has 1826 states and 3160 transitions. [2022-01-11 06:28:35,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 3160 transitions. [2022-01-11 06:28:35,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-11 06:28:35,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:35,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:35,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:28:35,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1498537883, now seen corresponding path program 1 times [2022-01-11 06:28:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507225401] [2022-01-11 06:28:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:35,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:35,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:35,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507225401] [2022-01-11 06:28:35,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507225401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:35,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:35,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:28:35,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730008999] [2022-01-11 06:28:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:35,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:28:35,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:28:35,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:35,718 INFO L87 Difference]: Start difference. First operand 1826 states and 3160 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:35,826 INFO L93 Difference]: Finished difference Result 2546 states and 4385 transitions. [2022-01-11 06:28:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:28:35,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2022-01-11 06:28:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:35,836 INFO L225 Difference]: With dead ends: 2546 [2022-01-11 06:28:35,836 INFO L226 Difference]: Without dead ends: 2153 [2022-01-11 06:28:35,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:35,841 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 312 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:35,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2824 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:28:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2022-01-11 06:28:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2151. [2022-01-11 06:28:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2150 states have (on average 1.7269767441860464) internal successors, (3713), 2150 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3713 transitions. [2022-01-11 06:28:35,990 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3713 transitions. Word has length 209 [2022-01-11 06:28:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:35,990 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 3713 transitions. [2022-01-11 06:28:35,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3713 transitions. [2022-01-11 06:28:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-11 06:28:35,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:35,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:35,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:28:35,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2065241362, now seen corresponding path program 1 times [2022-01-11 06:28:35,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:35,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149121159] [2022-01-11 06:28:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:35,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:36,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:36,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149121159] [2022-01-11 06:28:36,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149121159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:36,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:36,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:28:36,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117578185] [2022-01-11 06:28:36,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:36,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:28:36,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:28:36,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:28:36,222 INFO L87 Difference]: Start difference. First operand 2151 states and 3713 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:36,613 INFO L93 Difference]: Finished difference Result 8460 states and 14591 transitions. [2022-01-11 06:28:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:28:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2022-01-11 06:28:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:36,635 INFO L225 Difference]: With dead ends: 8460 [2022-01-11 06:28:36,635 INFO L226 Difference]: Without dead ends: 6323 [2022-01-11 06:28:36,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:28:36,640 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 4640 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4640 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:36,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4640 Valid, 4042 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:28:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2022-01-11 06:28:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 4256. [2022-01-11 06:28:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 1.7191539365452408) internal successors, (7315), 4255 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 7315 transitions. [2022-01-11 06:28:36,877 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 7315 transitions. Word has length 209 [2022-01-11 06:28:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:36,877 INFO L470 AbstractCegarLoop]: Abstraction has 4256 states and 7315 transitions. [2022-01-11 06:28:36,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 7315 transitions. [2022-01-11 06:28:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-11 06:28:36,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:36,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:36,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:28:36,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash -542249028, now seen corresponding path program 1 times [2022-01-11 06:28:36,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:36,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272382351] [2022-01-11 06:28:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:36,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:37,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272382351] [2022-01-11 06:28:37,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272382351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:37,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:37,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:28:37,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883652923] [2022-01-11 06:28:37,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:37,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:28:37,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:28:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:28:37,076 INFO L87 Difference]: Start difference. First operand 4256 states and 7315 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:37,742 INFO L93 Difference]: Finished difference Result 12537 states and 21535 transitions. [2022-01-11 06:28:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:28:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2022-01-11 06:28:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:37,765 INFO L225 Difference]: With dead ends: 12537 [2022-01-11 06:28:37,765 INFO L226 Difference]: Without dead ends: 8447 [2022-01-11 06:28:37,771 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 [2022-01-11 06:28:37,772 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 3313 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:37,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 2861 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:28:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8447 states. [2022-01-11 06:28:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8447 to 8445. [2022-01-11 06:28:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8445 states, 8444 states have (on average 1.7128138323069635) internal successors, (14463), 8444 states have internal predecessors, (14463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 14463 transitions. [2022-01-11 06:28:38,280 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 14463 transitions. Word has length 212 [2022-01-11 06:28:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:38,283 INFO L470 AbstractCegarLoop]: Abstraction has 8445 states and 14463 transitions. [2022-01-11 06:28:38,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 14463 transitions. [2022-01-11 06:28:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-11 06:28:38,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:38,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:38,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:28:38,296 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:38,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -544203853, now seen corresponding path program 1 times [2022-01-11 06:28:38,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:38,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898711798] [2022-01-11 06:28:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:38,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:38,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:38,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898711798] [2022-01-11 06:28:38,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898711798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:38,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:38,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:28:38,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560231051] [2022-01-11 06:28:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:38,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:28:38,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:28:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:28:38,495 INFO L87 Difference]: Start difference. First operand 8445 states and 14463 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:39,591 INFO L93 Difference]: Finished difference Result 25115 states and 43005 transitions. [2022-01-11 06:28:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:28:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2022-01-11 06:28:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:39,639 INFO L225 Difference]: With dead ends: 25115 [2022-01-11 06:28:39,640 INFO L226 Difference]: Without dead ends: 16731 [2022-01-11 06:28:39,653 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 [2022-01-11 06:28:39,656 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 3285 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:39,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3285 Valid, 2848 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:28:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16731 states. [2022-01-11 06:28:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16731 to 16729. [2022-01-11 06:28:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16729 states, 16728 states have (on average 1.7046269727403156) internal successors, (28515), 16728 states have internal predecessors, (28515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16729 states to 16729 states and 28515 transitions. [2022-01-11 06:28:40,968 INFO L78 Accepts]: Start accepts. Automaton has 16729 states and 28515 transitions. Word has length 214 [2022-01-11 06:28:40,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:40,969 INFO L470 AbstractCegarLoop]: Abstraction has 16729 states and 28515 transitions. [2022-01-11 06:28:40,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:40,970 INFO L276 IsEmpty]: Start isEmpty. Operand 16729 states and 28515 transitions. [2022-01-11 06:28:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-11 06:28:40,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:40,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:40,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:28:40,989 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash 718888842, now seen corresponding path program 1 times [2022-01-11 06:28:40,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:40,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646117433] [2022-01-11 06:28:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:40,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:41,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:41,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646117433] [2022-01-11 06:28:41,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646117433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:41,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:41,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:28:41,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359349473] [2022-01-11 06:28:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:41,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:28:41,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:28:41,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:41,314 INFO L87 Difference]: Start difference. First operand 16729 states and 28515 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:43,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:28:45,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:45,331 INFO L93 Difference]: Finished difference Result 32869 states and 55517 transitions. [2022-01-11 06:28:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:28:45,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2022-01-11 06:28:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:45,384 INFO L225 Difference]: With dead ends: 32869 [2022-01-11 06:28:45,384 INFO L226 Difference]: Without dead ends: 24547 [2022-01-11 06:28:45,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:45,493 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 303 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:45,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2555 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:28:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24547 states. [2022-01-11 06:28:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24547 to 24497. [2022-01-11 06:28:46,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24497 states, 24496 states have (on average 1.690194317439582) internal successors, (41403), 24496 states have internal predecessors, (41403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:46,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24497 states to 24497 states and 41403 transitions. [2022-01-11 06:28:46,987 INFO L78 Accepts]: Start accepts. Automaton has 24497 states and 41403 transitions. Word has length 216 [2022-01-11 06:28:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:46,987 INFO L470 AbstractCegarLoop]: Abstraction has 24497 states and 41403 transitions. [2022-01-11 06:28:46,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 24497 states and 41403 transitions. [2022-01-11 06:28:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-11 06:28:47,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:47,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:47,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:28:47,010 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash 365861926, now seen corresponding path program 1 times [2022-01-11 06:28:47,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:47,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168440018] [2022-01-11 06:28:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:47,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:47,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:47,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168440018] [2022-01-11 06:28:47,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168440018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:47,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:47,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:28:47,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19582644] [2022-01-11 06:28:47,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:47,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:28:47,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:47,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:28:47,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:47,182 INFO L87 Difference]: Start difference. First operand 24497 states and 41403 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:28:49,929 INFO L93 Difference]: Finished difference Result 70285 states and 118511 transitions. [2022-01-11 06:28:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:28:49,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2022-01-11 06:28:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:28:50,024 INFO L225 Difference]: With dead ends: 70285 [2022-01-11 06:28:50,024 INFO L226 Difference]: Without dead ends: 47651 [2022-01-11 06:28:50,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:28:50,055 INFO L933 BasicCegarLoop]: 2466 mSDtfsCounter, 1054 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:28:50,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 3735 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:28:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47651 states. [2022-01-11 06:28:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47651 to 47649. [2022-01-11 06:28:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47649 states, 47648 states have (on average 1.6824420752182674) internal successors, (80165), 47648 states have internal predecessors, (80165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47649 states to 47649 states and 80165 transitions. [2022-01-11 06:28:53,428 INFO L78 Accepts]: Start accepts. Automaton has 47649 states and 80165 transitions. Word has length 220 [2022-01-11 06:28:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:28:53,429 INFO L470 AbstractCegarLoop]: Abstraction has 47649 states and 80165 transitions. [2022-01-11 06:28:53,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:28:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 47649 states and 80165 transitions. [2022-01-11 06:28:53,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-11 06:28:53,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:28:53,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:28:53,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:28:53,476 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:28:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:28:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash -69710946, now seen corresponding path program 1 times [2022-01-11 06:28:53,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:28:53,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888588118] [2022-01-11 06:28:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:28:53,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:28:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:28:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:28:53,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:28:53,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888588118] [2022-01-11 06:28:53,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888588118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:28:53,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:28:53,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:28:53,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637186054] [2022-01-11 06:28:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:28:53,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:28:53,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:28:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:28:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:28:53,920 INFO L87 Difference]: Start difference. First operand 47649 states and 80165 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:29:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:29:00,436 INFO L93 Difference]: Finished difference Result 140381 states and 236159 transitions. [2022-01-11 06:29:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:29:00,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2022-01-11 06:29:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:29:00,752 INFO L225 Difference]: With dead ends: 140381 [2022-01-11 06:29:00,752 INFO L226 Difference]: Without dead ends: 93899 [2022-01-11 06:29:00,801 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 [2022-01-11 06:29:00,801 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 3263 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:29:00,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3263 Valid, 2775 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:29:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93899 states. [2022-01-11 06:29:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93899 to 93897. [2022-01-11 06:29:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93897 states, 93896 states have (on average 1.6778670017892137) internal successors, (157545), 93896 states have internal predecessors, (157545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:29:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93897 states to 93897 states and 157545 transitions. [2022-01-11 06:29:07,520 INFO L78 Accepts]: Start accepts. Automaton has 93897 states and 157545 transitions. Word has length 221 [2022-01-11 06:29:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:29:07,520 INFO L470 AbstractCegarLoop]: Abstraction has 93897 states and 157545 transitions. [2022-01-11 06:29:07,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:29:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 93897 states and 157545 transitions. [2022-01-11 06:29:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-11 06:29:07,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:29:07,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:29:07,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:29:07,583 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:29:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:29:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash 898691655, now seen corresponding path program 1 times [2022-01-11 06:29:07,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:29:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080819083] [2022-01-11 06:29:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:29:07,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:29:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:29:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:29:07,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:29:07,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080819083] [2022-01-11 06:29:07,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080819083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:29:07,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:29:07,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:29:07,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578214395] [2022-01-11 06:29:07,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:29:07,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:29:07,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:29:07,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:29:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:29:07,712 INFO L87 Difference]: Start difference. First operand 93897 states and 157545 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:29:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:29:20,224 INFO L93 Difference]: Finished difference Result 274185 states and 459480 transitions. [2022-01-11 06:29:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:29:20,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2022-01-11 06:29:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:29:20,833 INFO L225 Difference]: With dead ends: 274185 [2022-01-11 06:29:20,833 INFO L226 Difference]: Without dead ends: 184699 [2022-01-11 06:29:20,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:29:20,942 INFO L933 BasicCegarLoop]: 2259 mSDtfsCounter, 1039 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:29:20,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3528 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:29:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184699 states. [2022-01-11 06:29:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184699 to 184697. [2022-01-11 06:29:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184697 states, 184696 states have (on average 1.6711352709316931) internal successors, (308652), 184696 states have internal predecessors, (308652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)