/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:15:36,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:15:36,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:15:36,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:15:36,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:15:36,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:15:36,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:15:36,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:15:36,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:15:36,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:15:36,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:15:36,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:15:36,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:15:36,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:15:36,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:15:36,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:15:36,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:15:36,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:15:36,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:15:36,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:15:36,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:15:36,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:15:36,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:15:36,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:15:36,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:15:36,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:15:36,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:15:36,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:15:36,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:15:36,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:15:36,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:15:36,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:15:36,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:15:36,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:15:36,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:15:36,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:15:36,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:15:36,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:15:36,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:15:36,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:15:36,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:15:36,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:15:36,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:15:36,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:15:36,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:15:36,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:15:36,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:15:36,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:15:36,212 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:15:36,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:15:36,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:15:36,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:15:36,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:15:36,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:15:36,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:15:36,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:15:36,213 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:15:36,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:15:36,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:15:36,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:15:36,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:15:36,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:15:36,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:15:36,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:15:36,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:15:36,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:15:36,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:15:36,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:15:36,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:15:36,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:15:36,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:15:36,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:15:36,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:15:36,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:15:36,220 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:15:36,220 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:15:36,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:15:36,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:15:36,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:15:36,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:15:36,418 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:15:36,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2022-01-10 18:15:36,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae9d7b22/6df1e15f937c4be5a24f1455250e2b21/FLAG540a222a5 [2022-01-10 18:15:36,902 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:15:36,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2022-01-10 18:15:36,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae9d7b22/6df1e15f937c4be5a24f1455250e2b21/FLAG540a222a5 [2022-01-10 18:15:36,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae9d7b22/6df1e15f937c4be5a24f1455250e2b21 [2022-01-10 18:15:36,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:15:36,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:15:36,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:15:36,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:15:36,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:15:36,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:15:36" (1/1) ... [2022-01-10 18:15:36,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db2d7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:36, skipping insertion in model container [2022-01-10 18:15:36,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:15:36" (1/1) ... [2022-01-10 18:15:36,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:15:36,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:15:37,159 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c[1605,1618] [2022-01-10 18:15:37,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:15:37,255 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:15:37,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:15:37,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c[1605,1618] [2022-01-10 18:15:37,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:15:37,311 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:15:37,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c[1605,1618] [2022-01-10 18:15:37,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:15:37,382 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:15:37,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37 WrapperNode [2022-01-10 18:15:37,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:15:37,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:15:37,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:15:37,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:15:37,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,431 INFO L137 Inliner]: procedures = 58, calls = 159, calls flagged for inlining = 56, calls inlined = 140, statements flattened = 1034 [2022-01-10 18:15:37,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:15:37,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:15:37,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:15:37,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:15:37,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:15:37,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:15:37,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:15:37,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:15:37,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (1/1) ... [2022-01-10 18:15:37,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:15:37,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:15:37,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:15:37,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:15:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:15:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:15:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:15:37,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:15:37,667 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:15:37,668 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:15:38,171 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:15:38,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:15:38,178 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 18:15:38,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:15:38 BoogieIcfgContainer [2022-01-10 18:15:38,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:15:38,180 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:15:38,180 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:15:38,191 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:15:38,193 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:15:38" (1/1) ... [2022-01-10 18:15:38,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:15:38 BasicIcfg [2022-01-10 18:15:38,320 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:15:38,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:15:38,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:15:38,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:15:38,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:15:36" (1/4) ... [2022-01-10 18:15:38,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d393a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:15:38, skipping insertion in model container [2022-01-10 18:15:38,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:15:37" (2/4) ... [2022-01-10 18:15:38,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d393a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:15:38, skipping insertion in model container [2022-01-10 18:15:38,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:15:38" (3/4) ... [2022-01-10 18:15:38,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d393a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:15:38, skipping insertion in model container [2022-01-10 18:15:38,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:15:38" (4/4) ... [2022-01-10 18:15:38,325 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.cTransformedIcfg [2022-01-10 18:15:38,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:15:38,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 18:15:38,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:15:38,359 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:15:38,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 18:15:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 275 states have (on average 1.3854545454545455) internal successors, (381), 278 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 18:15:38,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:38,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:38,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:38,378 INFO L85 PathProgramCache]: Analyzing trace with hash -658118, now seen corresponding path program 1 times [2022-01-10 18:15:38,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:38,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213195873] [2022-01-10 18:15:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:38,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:38,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:38,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213195873] [2022-01-10 18:15:38,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213195873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:38,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:38,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:15:38,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798477083] [2022-01-10 18:15:38,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:38,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:15:38,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:15:38,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:15:38,573 INFO L87 Difference]: Start difference. First operand has 279 states, 275 states have (on average 1.3854545454545455) internal successors, (381), 278 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:38,607 INFO L93 Difference]: Finished difference Result 548 states and 751 transitions. [2022-01-10 18:15:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:15:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-10 18:15:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:38,619 INFO L225 Difference]: With dead ends: 548 [2022-01-10 18:15:38,619 INFO L226 Difference]: Without dead ends: 269 [2022-01-10 18:15:38,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:15:38,624 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:38,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-10 18:15:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-01-10 18:15:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 266 states have (on average 1.3646616541353382) internal successors, (363), 268 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 363 transitions. [2022-01-10 18:15:38,663 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 363 transitions. Word has length 19 [2022-01-10 18:15:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:38,663 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 363 transitions. [2022-01-10 18:15:38,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 363 transitions. [2022-01-10 18:15:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 18:15:38,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:38,664 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] [2022-01-10 18:15:38,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:15:38,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -78394691, now seen corresponding path program 1 times [2022-01-10 18:15:38,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:38,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112028696] [2022-01-10 18:15:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:38,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:38,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112028696] [2022-01-10 18:15:38,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112028696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:38,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:38,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:15:38,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31717891] [2022-01-10 18:15:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:38,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:15:38,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:15:38,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:15:38,749 INFO L87 Difference]: Start difference. First operand 269 states and 363 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:38,802 INFO L93 Difference]: Finished difference Result 531 states and 719 transitions. [2022-01-10 18:15:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:15:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-10 18:15:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:38,803 INFO L225 Difference]: With dead ends: 531 [2022-01-10 18:15:38,803 INFO L226 Difference]: Without dead ends: 269 [2022-01-10 18:15:38,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:15:38,805 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 349 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:38,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 357 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-10 18:15:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-01-10 18:15:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 266 states have (on average 1.3533834586466165) internal successors, (360), 268 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 360 transitions. [2022-01-10 18:15:38,819 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 360 transitions. Word has length 20 [2022-01-10 18:15:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:38,819 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 360 transitions. [2022-01-10 18:15:38,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 360 transitions. [2022-01-10 18:15:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 18:15:38,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:38,823 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] [2022-01-10 18:15:38,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:15:38,823 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:38,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1434019177, now seen corresponding path program 1 times [2022-01-10 18:15:38,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:38,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106804438] [2022-01-10 18:15:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:38,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:38,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:38,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106804438] [2022-01-10 18:15:38,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106804438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:38,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:38,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:15:38,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372803093] [2022-01-10 18:15:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:38,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:15:38,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:38,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:15:38,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:15:38,876 INFO L87 Difference]: Start difference. First operand 269 states and 360 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:38,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:38,990 INFO L93 Difference]: Finished difference Result 553 states and 736 transitions. [2022-01-10 18:15:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:15:38,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-01-10 18:15:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:38,992 INFO L225 Difference]: With dead ends: 553 [2022-01-10 18:15:38,992 INFO L226 Difference]: Without dead ends: 291 [2022-01-10 18:15:38,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:15:38,994 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 182 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:38,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 434 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:15:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-01-10 18:15:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 285. [2022-01-10 18:15:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 282 states have (on average 1.2943262411347518) internal successors, (365), 284 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 365 transitions. [2022-01-10 18:15:39,024 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 365 transitions. Word has length 26 [2022-01-10 18:15:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:39,024 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 365 transitions. [2022-01-10 18:15:39,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 365 transitions. [2022-01-10 18:15:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 18:15:39,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:39,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:39,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:15:39,026 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:39,026 INFO L85 PathProgramCache]: Analyzing trace with hash 834482979, now seen corresponding path program 1 times [2022-01-10 18:15:39,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108873696] [2022-01-10 18:15:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:39,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:39,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:39,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108873696] [2022-01-10 18:15:39,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108873696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:39,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:39,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:15:39,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175625317] [2022-01-10 18:15:39,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:39,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:15:39,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:39,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:15:39,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:39,135 INFO L87 Difference]: Start difference. First operand 285 states and 365 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:39,295 INFO L93 Difference]: Finished difference Result 754 states and 949 transitions. [2022-01-10 18:15:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:15:39,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-10 18:15:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:39,297 INFO L225 Difference]: With dead ends: 754 [2022-01-10 18:15:39,297 INFO L226 Difference]: Without dead ends: 476 [2022-01-10 18:15:39,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:15:39,299 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 464 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:39,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1204 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:15:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-01-10 18:15:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 312. [2022-01-10 18:15:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 309 states have (on average 1.2686084142394822) internal successors, (392), 311 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 392 transitions. [2022-01-10 18:15:39,318 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 392 transitions. Word has length 33 [2022-01-10 18:15:39,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:39,318 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 392 transitions. [2022-01-10 18:15:39,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 392 transitions. [2022-01-10 18:15:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 18:15:39,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:39,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:39,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:15:39,319 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:39,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:39,320 INFO L85 PathProgramCache]: Analyzing trace with hash 670162691, now seen corresponding path program 1 times [2022-01-10 18:15:39,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:39,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444469670] [2022-01-10 18:15:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:39,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:39,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:39,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444469670] [2022-01-10 18:15:39,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444469670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:39,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:39,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:15:39,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078040510] [2022-01-10 18:15:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:39,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:15:39,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:15:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:39,397 INFO L87 Difference]: Start difference. First operand 312 states and 392 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:39,658 INFO L93 Difference]: Finished difference Result 1800 states and 2269 transitions. [2022-01-10 18:15:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:15:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-10 18:15:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:39,662 INFO L225 Difference]: With dead ends: 1800 [2022-01-10 18:15:39,662 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 18:15:39,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:15:39,667 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1311 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:39,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 1643 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:15:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 18:15:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 421. [2022-01-10 18:15:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 418 states have (on average 1.2607655502392345) internal successors, (527), 420 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 527 transitions. [2022-01-10 18:15:39,704 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 527 transitions. Word has length 33 [2022-01-10 18:15:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:39,708 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 527 transitions. [2022-01-10 18:15:39,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 527 transitions. [2022-01-10 18:15:39,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:15:39,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:39,712 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] [2022-01-10 18:15:39,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:15:39,712 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:39,713 INFO L85 PathProgramCache]: Analyzing trace with hash 316911433, now seen corresponding path program 1 times [2022-01-10 18:15:39,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:39,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704417330] [2022-01-10 18:15:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:39,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:39,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:39,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704417330] [2022-01-10 18:15:39,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704417330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:39,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:39,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:15:39,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928450964] [2022-01-10 18:15:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:39,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:15:39,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:15:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:15:39,844 INFO L87 Difference]: Start difference. First operand 421 states and 527 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:40,070 INFO L93 Difference]: Finished difference Result 1147 states and 1431 transitions. [2022-01-10 18:15:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:15:40,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 18:15:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:40,073 INFO L225 Difference]: With dead ends: 1147 [2022-01-10 18:15:40,073 INFO L226 Difference]: Without dead ends: 733 [2022-01-10 18:15:40,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:15:40,077 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 212 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:40,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 2206 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:15:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-01-10 18:15:40,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 727. [2022-01-10 18:15:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 724 states have (on average 1.2417127071823204) internal successors, (899), 726 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 899 transitions. [2022-01-10 18:15:40,126 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 899 transitions. Word has length 41 [2022-01-10 18:15:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:40,127 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 899 transitions. [2022-01-10 18:15:40,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 899 transitions. [2022-01-10 18:15:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:15:40,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:40,131 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] [2022-01-10 18:15:40,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:15:40,131 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash -680160920, now seen corresponding path program 1 times [2022-01-10 18:15:40,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:40,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468300369] [2022-01-10 18:15:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:40,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:40,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:40,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468300369] [2022-01-10 18:15:40,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468300369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:40,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:40,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:15:40,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52990659] [2022-01-10 18:15:40,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:40,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:15:40,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:15:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:15:40,208 INFO L87 Difference]: Start difference. First operand 727 states and 899 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:40,358 INFO L93 Difference]: Finished difference Result 1628 states and 2022 transitions. [2022-01-10 18:15:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:15:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 18:15:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:40,365 INFO L225 Difference]: With dead ends: 1628 [2022-01-10 18:15:40,365 INFO L226 Difference]: Without dead ends: 1081 [2022-01-10 18:15:40,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:40,367 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 537 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:40,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 1001 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:15:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-10 18:15:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 700. [2022-01-10 18:15:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 1.2381635581061694) internal successors, (863), 699 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 863 transitions. [2022-01-10 18:15:40,423 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 863 transitions. Word has length 41 [2022-01-10 18:15:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 863 transitions. [2022-01-10 18:15:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 863 transitions. [2022-01-10 18:15:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:15:40,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:40,424 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] [2022-01-10 18:15:40,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:15:40,425 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1026374809, now seen corresponding path program 1 times [2022-01-10 18:15:40,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:40,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356124523] [2022-01-10 18:15:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:40,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:40,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356124523] [2022-01-10 18:15:40,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356124523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:40,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:40,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:15:40,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374424654] [2022-01-10 18:15:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:40,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:15:40,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:15:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:40,461 INFO L87 Difference]: Start difference. First operand 700 states and 863 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:40,698 INFO L93 Difference]: Finished difference Result 1897 states and 2349 transitions. [2022-01-10 18:15:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:15:40,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 18:15:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:40,702 INFO L225 Difference]: With dead ends: 1897 [2022-01-10 18:15:40,702 INFO L226 Difference]: Without dead ends: 1204 [2022-01-10 18:15:40,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:15:40,703 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 595 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:40,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 1603 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:15:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-01-10 18:15:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 536. [2022-01-10 18:15:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 533 states have (on average 1.2101313320825515) internal successors, (645), 535 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 645 transitions. [2022-01-10 18:15:40,750 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 645 transitions. Word has length 41 [2022-01-10 18:15:40,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:40,750 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 645 transitions. [2022-01-10 18:15:40,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 645 transitions. [2022-01-10 18:15:40,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:15:40,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:40,751 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] [2022-01-10 18:15:40,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:15:40,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1190695097, now seen corresponding path program 1 times [2022-01-10 18:15:40,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:40,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199060408] [2022-01-10 18:15:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:40,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:40,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:40,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199060408] [2022-01-10 18:15:40,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199060408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:40,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:40,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:15:40,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186200626] [2022-01-10 18:15:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:40,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:15:40,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:15:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:40,787 INFO L87 Difference]: Start difference. First operand 536 states and 645 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:40,884 INFO L93 Difference]: Finished difference Result 1368 states and 1660 transitions. [2022-01-10 18:15:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:15:40,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 18:15:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:40,887 INFO L225 Difference]: With dead ends: 1368 [2022-01-10 18:15:40,887 INFO L226 Difference]: Without dead ends: 839 [2022-01-10 18:15:40,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:15:40,888 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 709 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:40,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 731 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-01-10 18:15:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 475. [2022-01-10 18:15:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 472 states have (on average 1.1970338983050848) internal successors, (565), 474 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2022-01-10 18:15:40,925 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 41 [2022-01-10 18:15:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:40,926 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2022-01-10 18:15:40,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2022-01-10 18:15:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:15:40,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:40,927 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:40,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:15:40,927 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:40,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:40,927 INFO L85 PathProgramCache]: Analyzing trace with hash 188300540, now seen corresponding path program 1 times [2022-01-10 18:15:40,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:40,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905647580] [2022-01-10 18:15:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:40,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:40,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:40,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905647580] [2022-01-10 18:15:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905647580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:40,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:40,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:15:40,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129973806] [2022-01-10 18:15:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:40,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:15:40,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:15:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:15:40,966 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:40,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:40,998 INFO L93 Difference]: Finished difference Result 475 states and 565 transitions. [2022-01-10 18:15:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:15:40,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 18:15:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:41,000 INFO L225 Difference]: With dead ends: 475 [2022-01-10 18:15:41,000 INFO L226 Difference]: Without dead ends: 294 [2022-01-10 18:15:41,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:15:41,001 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 44 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:41,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 87 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-10 18:15:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-01-10 18:15:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.2184300341296928) internal successors, (357), 293 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2022-01-10 18:15:41,060 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 59 [2022-01-10 18:15:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:41,060 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2022-01-10 18:15:41,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2022-01-10 18:15:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:15:41,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:41,061 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:41,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:15:41,062 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1456385293, now seen corresponding path program 1 times [2022-01-10 18:15:41,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:41,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194221110] [2022-01-10 18:15:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:41,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:41,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194221110] [2022-01-10 18:15:41,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194221110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:41,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:41,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:15:41,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296416725] [2022-01-10 18:15:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:41,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:15:41,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:15:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:41,130 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:41,284 INFO L93 Difference]: Finished difference Result 1589 states and 1908 transitions. [2022-01-10 18:15:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:15:41,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:15:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:41,289 INFO L225 Difference]: With dead ends: 1589 [2022-01-10 18:15:41,289 INFO L226 Difference]: Without dead ends: 1302 [2022-01-10 18:15:41,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:15:41,290 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 323 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:41,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 572 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-01-10 18:15:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 579. [2022-01-10 18:15:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.1955017301038062) internal successors, (691), 578 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 691 transitions. [2022-01-10 18:15:41,347 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 691 transitions. Word has length 65 [2022-01-10 18:15:41,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:41,348 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 691 transitions. [2022-01-10 18:15:41,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 691 transitions. [2022-01-10 18:15:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:15:41,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:41,349 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:41,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:15:41,349 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1337502455, now seen corresponding path program 1 times [2022-01-10 18:15:41,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:41,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633134575] [2022-01-10 18:15:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:41,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 18:15:41,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:41,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633134575] [2022-01-10 18:15:41,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633134575] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:15:41,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408002331] [2022-01-10 18:15:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:41,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:15:41,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:15:41,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:15:41,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:15:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:41,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 18:15:41,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:15:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 18:15:41,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:15:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 18:15:41,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408002331] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:15:41,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:15:41,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-10 18:15:41,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984461921] [2022-01-10 18:15:41,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:15:41,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:15:41,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:15:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:41,754 INFO L87 Difference]: Start difference. First operand 579 states and 691 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:41,874 INFO L93 Difference]: Finished difference Result 1479 states and 1755 transitions. [2022-01-10 18:15:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:15:41,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:15:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:41,877 INFO L225 Difference]: With dead ends: 1479 [2022-01-10 18:15:41,877 INFO L226 Difference]: Without dead ends: 907 [2022-01-10 18:15:41,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:15:41,879 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 263 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:41,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 509 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-01-10 18:15:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 559. [2022-01-10 18:15:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.168458781362007) internal successors, (652), 558 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 652 transitions. [2022-01-10 18:15:41,935 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 652 transitions. Word has length 67 [2022-01-10 18:15:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:41,935 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 652 transitions. [2022-01-10 18:15:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 652 transitions. [2022-01-10 18:15:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:15:41,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:41,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:41,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 18:15:42,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-10 18:15:42,148 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:42,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1864567303, now seen corresponding path program 1 times [2022-01-10 18:15:42,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:42,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893936379] [2022-01-10 18:15:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:42,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 18:15:42,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:42,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893936379] [2022-01-10 18:15:42,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893936379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:42,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:42,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:15:42,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595467890] [2022-01-10 18:15:42,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:42,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:15:42,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:15:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:15:42,203 INFO L87 Difference]: Start difference. First operand 559 states and 652 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:42,417 INFO L93 Difference]: Finished difference Result 2149 states and 2543 transitions. [2022-01-10 18:15:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:15:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:15:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:42,422 INFO L225 Difference]: With dead ends: 2149 [2022-01-10 18:15:42,422 INFO L226 Difference]: Without dead ends: 1721 [2022-01-10 18:15:42,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:15:42,424 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 344 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:42,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 925 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-01-10 18:15:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 557. [2022-01-10 18:15:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.1654676258992807) internal successors, (648), 556 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 648 transitions. [2022-01-10 18:15:42,484 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 648 transitions. Word has length 67 [2022-01-10 18:15:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:42,484 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 648 transitions. [2022-01-10 18:15:42,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 648 transitions. [2022-01-10 18:15:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:15:42,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:42,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:42,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:15:42,487 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash -444448171, now seen corresponding path program 1 times [2022-01-10 18:15:42,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:42,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453244457] [2022-01-10 18:15:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:42,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 18:15:42,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:42,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453244457] [2022-01-10 18:15:42,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453244457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:42,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:42,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:15:42,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867850856] [2022-01-10 18:15:42,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:42,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:15:42,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:15:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:42,551 INFO L87 Difference]: Start difference. First operand 557 states and 648 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:42,717 INFO L93 Difference]: Finished difference Result 1829 states and 2160 transitions. [2022-01-10 18:15:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:15:42,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 18:15:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:42,721 INFO L225 Difference]: With dead ends: 1829 [2022-01-10 18:15:42,721 INFO L226 Difference]: Without dead ends: 1403 [2022-01-10 18:15:42,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:15:42,722 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 322 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:42,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 523 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-01-10 18:15:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 569. [2022-01-10 18:15:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.1619718309859155) internal successors, (660), 568 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 660 transitions. [2022-01-10 18:15:42,784 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 660 transitions. Word has length 74 [2022-01-10 18:15:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:42,785 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 660 transitions. [2022-01-10 18:15:42,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:42,785 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 660 transitions. [2022-01-10 18:15:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:15:42,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:42,785 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:42,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:15:42,786 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1063103638, now seen corresponding path program 1 times [2022-01-10 18:15:42,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:42,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358300982] [2022-01-10 18:15:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:42,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:15:42,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:42,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358300982] [2022-01-10 18:15:42,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358300982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:42,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:42,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:15:42,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977282276] [2022-01-10 18:15:42,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:42,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:15:42,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:15:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:15:42,858 INFO L87 Difference]: Start difference. First operand 569 states and 660 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:43,206 INFO L93 Difference]: Finished difference Result 2073 states and 2442 transitions. [2022-01-10 18:15:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 18:15:43,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 18:15:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:43,211 INFO L225 Difference]: With dead ends: 2073 [2022-01-10 18:15:43,211 INFO L226 Difference]: Without dead ends: 1802 [2022-01-10 18:15:43,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 18:15:43,214 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 460 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:43,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1107 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:15:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-01-10 18:15:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 810. [2022-01-10 18:15:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 1.1557478368355996) internal successors, (935), 809 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 935 transitions. [2022-01-10 18:15:43,320 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 935 transitions. Word has length 74 [2022-01-10 18:15:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:43,320 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 935 transitions. [2022-01-10 18:15:43,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 935 transitions. [2022-01-10 18:15:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:15:43,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:43,321 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:43,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:15:43,322 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:43,323 INFO L85 PathProgramCache]: Analyzing trace with hash 211213793, now seen corresponding path program 1 times [2022-01-10 18:15:43,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:43,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003839013] [2022-01-10 18:15:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:43,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 18:15:43,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:43,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003839013] [2022-01-10 18:15:43,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003839013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:15:43,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:15:43,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:15:43,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991222824] [2022-01-10 18:15:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:15:43,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:15:43,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:15:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:15:43,353 INFO L87 Difference]: Start difference. First operand 810 states and 935 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:43,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:43,468 INFO L93 Difference]: Finished difference Result 1492 states and 1738 transitions. [2022-01-10 18:15:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:15:43,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 18:15:43,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:43,471 INFO L225 Difference]: With dead ends: 1492 [2022-01-10 18:15:43,472 INFO L226 Difference]: Without dead ends: 755 [2022-01-10 18:15:43,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:15:43,473 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 91 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:43,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 260 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:15:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-01-10 18:15:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 565. [2022-01-10 18:15:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.1542553191489362) internal successors, (651), 564 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 651 transitions. [2022-01-10 18:15:43,553 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 651 transitions. Word has length 74 [2022-01-10 18:15:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:43,553 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 651 transitions. [2022-01-10 18:15:43,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 651 transitions. [2022-01-10 18:15:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:15:43,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:15:43,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:15:43,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:15:43,554 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:15:43,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:15:43,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1485307357, now seen corresponding path program 1 times [2022-01-10 18:15:43,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:15:43,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326118111] [2022-01-10 18:15:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:43,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:15:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 18:15:43,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:15:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326118111] [2022-01-10 18:15:43,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326118111] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:15:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530305824] [2022-01-10 18:15:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:15:43,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:15:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:15:43,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:15:43,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 18:15:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:15:43,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 18:15:43,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:15:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 18:15:44,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:15:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 18:15:44,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530305824] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:15:44,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:15:44,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2022-01-10 18:15:44,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416310813] [2022-01-10 18:15:44,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:15:44,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 18:15:44,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:15:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 18:15:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-10 18:15:44,375 INFO L87 Difference]: Start difference. First operand 565 states and 651 transitions. Second operand has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:15:45,176 INFO L93 Difference]: Finished difference Result 2986 states and 3509 transitions. [2022-01-10 18:15:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 18:15:45,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 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 76 [2022-01-10 18:15:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:15:45,177 INFO L225 Difference]: With dead ends: 2986 [2022-01-10 18:15:45,177 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 18:15:45,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 18:15:45,180 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1006 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:15:45,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 2053 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:15:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 18:15:45,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 18:15:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 18:15:45,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-01-10 18:15:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:15:45,181 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 18:15:45,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:15:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 18:15:45,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 18:15:45,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 18:15:45,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 18:15:45,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 18:15:45,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 18:15:45,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-10 18:15:45,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 18:16:45,381 WARN L228 SmtUtils]: Spent 52.86s on a formula simplification. DAG size of input: 301 DAG size of output: 298 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:16:51,586 WARN L228 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 198 DAG size of output: 195 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)