/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:26:46,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:26:46,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:26:46,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:26:46,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:26:46,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:26:46,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:26:46,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:26:46,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:26:46,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:26:46,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:26:46,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:26:46,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:26:46,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:26:46,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:26:46,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:26:46,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:26:46,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:26:46,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:26:46,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:26:46,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:26:46,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:26:46,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:26:46,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:26:46,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:26:46,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:26:46,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:26:46,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:26:46,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:26:46,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:26:46,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:26:46,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:26:46,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:26:46,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:26:46,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:26:46,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:26:46,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:26:46,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:26:46,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:26:46,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:26:46,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:26:46,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:26:46,204 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:26:46,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:26:46,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:26:46,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:26:46,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:26:46,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:26:46,206 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:26:46,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:26:46,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:26:46,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:26:46,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:26:46,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:26:46,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:26:46,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:26:46,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:26:46,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:26:46,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:26:46,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:26:46,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:26:46,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:26:46,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:26:46,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:26:46,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:26:46,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:26:46,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:26:46,209 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:26:46,209 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:26:46,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:26:46,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:26:46,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:26:46,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:26:46,429 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:26:46,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-11 06:26:46,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78117477c/18b43ba6608541c28e9339e14d971b1f/FLAG11664f8fe [2022-01-11 06:26:46,877 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:26:46,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-11 06:26:46,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78117477c/18b43ba6608541c28e9339e14d971b1f/FLAG11664f8fe [2022-01-11 06:26:46,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78117477c/18b43ba6608541c28e9339e14d971b1f [2022-01-11 06:26:46,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:26:46,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:26:46,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:26:46,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:26:46,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:26:46,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:26:46" (1/1) ... [2022-01-11 06:26:46,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4143f29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:46, skipping insertion in model container [2022-01-11 06:26:46,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:26:46" (1/1) ... [2022-01-11 06:26:46,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:26:46,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:26:47,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2022-01-11 06:26:47,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:26:47,304 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:26:47,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2022-01-11 06:26:47,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:26:47,411 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:26:47,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47 WrapperNode [2022-01-11 06:26:47,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:26:47,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:26:47,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:26:47,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:26:47,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,483 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1268 [2022-01-11 06:26:47,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:26:47,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:26:47,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:26:47,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:26:47,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:26:47,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:26:47,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:26:47,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:26:47,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (1/1) ... [2022-01-11 06:26:47,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:26:47,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:26:47,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:26:47,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:26:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:26:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:26:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:26:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:26:47,773 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:26:47,774 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:26:48,511 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:26:48,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:26:48,518 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:26:48,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:26:48 BoogieIcfgContainer [2022-01-11 06:26:48,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:26:48,520 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:26:48,521 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:26:48,522 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:26:48,523 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:26:48" (1/1) ... [2022-01-11 06:26:49,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:26:49 BasicIcfg [2022-01-11 06:26:49,028 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:26:49,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:26:49,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:26:49,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:26:49,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:26:46" (1/4) ... [2022-01-11 06:26:49,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9911862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:26:49, skipping insertion in model container [2022-01-11 06:26:49,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:26:47" (2/4) ... [2022-01-11 06:26:49,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9911862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:26:49, skipping insertion in model container [2022-01-11 06:26:49,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:26:48" (3/4) ... [2022-01-11 06:26:49,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9911862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:26:49, skipping insertion in model container [2022-01-11 06:26:49,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:26:49" (4/4) ... [2022-01-11 06:26:49,036 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:26:49,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:26:49,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:26:49,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:26:49,090 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:26:49,090 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:26:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 317 states have (on average 1.804416403785489) internal successors, (572), 318 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 06:26:49,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:49,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:49,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash 531733925, now seen corresponding path program 1 times [2022-01-11 06:26:49,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:49,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783562288] [2022-01-11 06:26:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:49,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:49,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:49,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783562288] [2022-01-11 06:26:49,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783562288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:49,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:49,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:49,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499406316] [2022-01-11 06:26:49,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:49,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:49,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:49,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:49,803 INFO L87 Difference]: Start difference. First operand has 319 states, 317 states have (on average 1.804416403785489) internal successors, (572), 318 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:51,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:26:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:52,164 INFO L93 Difference]: Finished difference Result 568 states and 991 transitions. [2022-01-11 06:26:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:52,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-01-11 06:26:52,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:52,177 INFO L225 Difference]: With dead ends: 568 [2022-01-11 06:26:52,178 INFO L226 Difference]: Without dead ends: 432 [2022-01-11 06:26:52,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:52,183 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 222 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:52,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1218 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-11 06:26:52,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-11 06:26:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2022-01-11 06:26:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6643356643356644) internal successors, (714), 429 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 714 transitions. [2022-01-11 06:26:52,248 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 714 transitions. Word has length 111 [2022-01-11 06:26:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:52,249 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 714 transitions. [2022-01-11 06:26:52,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 714 transitions. [2022-01-11 06:26:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 06:26:52,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:52,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:52,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:26:52,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1565338574, now seen corresponding path program 1 times [2022-01-11 06:26:52,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:52,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985048614] [2022-01-11 06:26:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:52,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:52,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:52,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985048614] [2022-01-11 06:26:52,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985048614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:52,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:52,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:52,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340696597] [2022-01-11 06:26:52,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:52,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:52,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:52,467 INFO L87 Difference]: Start difference. First operand 430 states and 714 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:52,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:52,510 INFO L93 Difference]: Finished difference Result 660 states and 1105 transitions. [2022-01-11 06:26:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:52,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-11 06:26:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:52,513 INFO L225 Difference]: With dead ends: 660 [2022-01-11 06:26:52,514 INFO L226 Difference]: Without dead ends: 533 [2022-01-11 06:26:52,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:52,515 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 196 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:52,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 1173 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-11 06:26:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 531. [2022-01-11 06:26:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.6716981132075472) internal successors, (886), 530 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 886 transitions. [2022-01-11 06:26:52,556 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 886 transitions. Word has length 114 [2022-01-11 06:26:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:52,557 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 886 transitions. [2022-01-11 06:26:52,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 886 transitions. [2022-01-11 06:26:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 06:26:52,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:52,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:52,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:26:52,570 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:52,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2059909777, now seen corresponding path program 1 times [2022-01-11 06:26:52,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:52,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478935672] [2022-01-11 06:26:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:52,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:52,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:52,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478935672] [2022-01-11 06:26:52,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478935672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:52,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:52,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:26:52,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400517293] [2022-01-11 06:26:52,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:52,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:26:52,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:52,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:26:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:26:52,780 INFO L87 Difference]: Start difference. First operand 531 states and 886 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:52,959 INFO L93 Difference]: Finished difference Result 1526 states and 2539 transitions. [2022-01-11 06:26:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:26:52,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-11 06:26:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:52,964 INFO L225 Difference]: With dead ends: 1526 [2022-01-11 06:26:52,964 INFO L226 Difference]: Without dead ends: 1042 [2022-01-11 06:26:52,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:52,966 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1229 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:52,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1229 Valid, 1201 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:26:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-01-11 06:26:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2022-01-11 06:26:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 1.6631376323387872) internal successors, (1728), 1039 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1728 transitions. [2022-01-11 06:26:53,028 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1728 transitions. Word has length 114 [2022-01-11 06:26:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:53,029 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1728 transitions. [2022-01-11 06:26:53,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1728 transitions. [2022-01-11 06:26:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 06:26:53,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:53,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:53,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:26:53,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash 664103724, now seen corresponding path program 1 times [2022-01-11 06:26:53,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:53,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541589010] [2022-01-11 06:26:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:53,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:53,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541589010] [2022-01-11 06:26:53,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541589010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:53,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:53,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:26:53,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914888223] [2022-01-11 06:26:53,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:53,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:26:53,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:26:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:53,269 INFO L87 Difference]: Start difference. First operand 1040 states and 1728 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:53,575 INFO L93 Difference]: Finished difference Result 4057 states and 6731 transitions. [2022-01-11 06:26:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:26:53,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-01-11 06:26:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:53,586 INFO L225 Difference]: With dead ends: 4057 [2022-01-11 06:26:53,587 INFO L226 Difference]: Without dead ends: 3029 [2022-01-11 06:26:53,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:26:53,589 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2086 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:53,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2086 Valid, 1672 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:26:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2022-01-11 06:26:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2040. [2022-01-11 06:26:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2039 states have (on average 1.6522805296714076) internal successors, (3369), 2039 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3369 transitions. [2022-01-11 06:26:53,759 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3369 transitions. Word has length 116 [2022-01-11 06:26:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:53,759 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3369 transitions. [2022-01-11 06:26:53,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3369 transitions. [2022-01-11 06:26:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-11 06:26:53,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:53,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:53,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:26:53,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 849886689, now seen corresponding path program 1 times [2022-01-11 06:26:53,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:53,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655339725] [2022-01-11 06:26:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:53,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:53,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:53,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655339725] [2022-01-11 06:26:53,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655339725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:53,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:53,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:53,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227305202] [2022-01-11 06:26:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:53,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:53,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:53,822 INFO L87 Difference]: Start difference. First operand 2040 states and 3369 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:54,099 INFO L93 Difference]: Finished difference Result 6063 states and 10009 transitions. [2022-01-11 06:26:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:54,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-11 06:26:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:54,116 INFO L225 Difference]: With dead ends: 6063 [2022-01-11 06:26:54,117 INFO L226 Difference]: Without dead ends: 4052 [2022-01-11 06:26:54,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:54,123 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 503 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:54,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1534 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:54,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2022-01-11 06:26:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 2054. [2022-01-11 06:26:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2053 states have (on average 1.6492937165124208) internal successors, (3386), 2053 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3386 transitions. [2022-01-11 06:26:54,310 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3386 transitions. Word has length 118 [2022-01-11 06:26:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:54,313 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 3386 transitions. [2022-01-11 06:26:54,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3386 transitions. [2022-01-11 06:26:54,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-11 06:26:54,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:54,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:54,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:26:54,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash -108816981, now seen corresponding path program 1 times [2022-01-11 06:26:54,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:54,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431364452] [2022-01-11 06:26:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:54,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:54,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:54,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431364452] [2022-01-11 06:26:54,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431364452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:54,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:54,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:26:54,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542961365] [2022-01-11 06:26:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:54,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:26:54,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:26:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:26:54,467 INFO L87 Difference]: Start difference. First operand 2054 states and 3386 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:54,815 INFO L93 Difference]: Finished difference Result 5965 states and 9830 transitions. [2022-01-11 06:26:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:26:54,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-11 06:26:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:54,829 INFO L225 Difference]: With dead ends: 5965 [2022-01-11 06:26:54,830 INFO L226 Difference]: Without dead ends: 4031 [2022-01-11 06:26:54,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:54,838 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1220 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:54,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 1201 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:26:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2022-01-11 06:26:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 4029. [2022-01-11 06:26:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4029 states, 4028 states have (on average 1.641012909632572) internal successors, (6610), 4028 states have internal predecessors, (6610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4029 states to 4029 states and 6610 transitions. [2022-01-11 06:26:55,227 INFO L78 Accepts]: Start accepts. Automaton has 4029 states and 6610 transitions. Word has length 119 [2022-01-11 06:26:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:55,228 INFO L470 AbstractCegarLoop]: Abstraction has 4029 states and 6610 transitions. [2022-01-11 06:26:55,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4029 states and 6610 transitions. [2022-01-11 06:26:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-11 06:26:55,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:55,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:55,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:26:55,233 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:55,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash -355505960, now seen corresponding path program 1 times [2022-01-11 06:26:55,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:55,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249882177] [2022-01-11 06:26:55,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:55,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:55,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:55,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249882177] [2022-01-11 06:26:55,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249882177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:55,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:55,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:26:55,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805840525] [2022-01-11 06:26:55,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:55,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:26:55,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:26:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:26:55,351 INFO L87 Difference]: Start difference. First operand 4029 states and 6610 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:56,142 INFO L93 Difference]: Finished difference Result 14037 states and 22877 transitions. [2022-01-11 06:26:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:26:56,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-11 06:26:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:56,188 INFO L225 Difference]: With dead ends: 14037 [2022-01-11 06:26:56,188 INFO L226 Difference]: Without dead ends: 10567 [2022-01-11 06:26:56,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:26:56,198 INFO L933 BasicCegarLoop]: 1202 mSDtfsCounter, 1172 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:56,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 2594 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-01-11 06:26:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 4517. [2022-01-11 06:26:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4516 states have (on average 1.6470327723649247) internal successors, (7438), 4516 states have internal predecessors, (7438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 7438 transitions. [2022-01-11 06:26:56,665 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 7438 transitions. Word has length 120 [2022-01-11 06:26:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:56,666 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 7438 transitions. [2022-01-11 06:26:56,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 7438 transitions. [2022-01-11 06:26:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-11 06:26:56,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:56,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:56,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:26:56,671 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash 458274514, now seen corresponding path program 1 times [2022-01-11 06:26:56,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:56,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019824131] [2022-01-11 06:26:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:56,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:56,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:56,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019824131] [2022-01-11 06:26:56,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019824131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:56,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:56,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:56,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965711788] [2022-01-11 06:26:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:56,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:56,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:56,913 INFO L87 Difference]: Start difference. First operand 4517 states and 7438 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:57,564 INFO L93 Difference]: Finished difference Result 9461 states and 15700 transitions. [2022-01-11 06:26:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-11 06:26:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:57,579 INFO L225 Difference]: With dead ends: 9461 [2022-01-11 06:26:57,579 INFO L226 Difference]: Without dead ends: 6887 [2022-01-11 06:26:57,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:57,583 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 186 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:57,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1018 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6887 states. [2022-01-11 06:26:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6887 to 6885. [2022-01-11 06:26:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6885 states, 6884 states have (on average 1.6499128413712958) internal successors, (11358), 6884 states have internal predecessors, (11358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 11358 transitions. [2022-01-11 06:26:58,412 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 11358 transitions. Word has length 121 [2022-01-11 06:26:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:26:58,412 INFO L470 AbstractCegarLoop]: Abstraction has 6885 states and 11358 transitions. [2022-01-11 06:26:58,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 11358 transitions. [2022-01-11 06:26:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 06:26:58,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:26:58,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:26:58,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:26:58,420 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:26:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:26:58,420 INFO L85 PathProgramCache]: Analyzing trace with hash -427255606, now seen corresponding path program 1 times [2022-01-11 06:26:58,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:26:58,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706743656] [2022-01-11 06:26:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:26:58,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:26:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:26:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:26:58,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:26:58,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706743656] [2022-01-11 06:26:58,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706743656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:26:58,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:26:58,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:26:58,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462129226] [2022-01-11 06:26:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:26:58,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:26:58,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:26:58,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:26:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:58,552 INFO L87 Difference]: Start difference. First operand 6885 states and 11358 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:26:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:26:59,746 INFO L93 Difference]: Finished difference Result 18863 states and 30981 transitions. [2022-01-11 06:26:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:26:59,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 06:26:59,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:26:59,769 INFO L225 Difference]: With dead ends: 18863 [2022-01-11 06:26:59,769 INFO L226 Difference]: Without dead ends: 13039 [2022-01-11 06:26:59,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:26:59,777 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 388 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:26:59,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1487 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:26:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13039 states. [2022-01-11 06:27:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13039 to 13037. [2022-01-11 06:27:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13037 states, 13036 states have (on average 1.638079165388156) internal successors, (21354), 13036 states have internal predecessors, (21354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 21354 transitions. [2022-01-11 06:27:01,257 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 21354 transitions. Word has length 124 [2022-01-11 06:27:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:27:01,258 INFO L470 AbstractCegarLoop]: Abstraction has 13037 states and 21354 transitions. [2022-01-11 06:27:01,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 21354 transitions. [2022-01-11 06:27:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 06:27:01,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:27:01,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:27:01,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:27:01,273 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:27:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:27:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1684571672, now seen corresponding path program 1 times [2022-01-11 06:27:01,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:27:01,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790934431] [2022-01-11 06:27:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:27:01,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:27:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:27:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:27:01,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:27:01,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790934431] [2022-01-11 06:27:01,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790934431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:27:01,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:27:01,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:27:01,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488423881] [2022-01-11 06:27:01,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:27:01,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:27:01,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:27:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:27:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:01,342 INFO L87 Difference]: Start difference. First operand 13037 states and 21354 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:27:03,103 INFO L93 Difference]: Finished difference Result 25902 states and 42310 transitions. [2022-01-11 06:27:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:27:03,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 06:27:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:27:03,155 INFO L225 Difference]: With dead ends: 25902 [2022-01-11 06:27:03,156 INFO L226 Difference]: Without dead ends: 19097 [2022-01-11 06:27:03,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:03,172 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 503 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:27:03,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1217 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:27:03,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19097 states. [2022-01-11 06:27:04,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19097 to 13037. [2022-01-11 06:27:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13037 states, 13036 states have (on average 1.6373120589137773) internal successors, (21344), 13036 states have internal predecessors, (21344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 21344 transitions. [2022-01-11 06:27:04,511 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 21344 transitions. Word has length 124 [2022-01-11 06:27:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:27:04,511 INFO L470 AbstractCegarLoop]: Abstraction has 13037 states and 21344 transitions. [2022-01-11 06:27:04,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 21344 transitions. [2022-01-11 06:27:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 06:27:04,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:27:04,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:27:04,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:27:04,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:27:04,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:27:04,523 INFO L85 PathProgramCache]: Analyzing trace with hash 440297764, now seen corresponding path program 1 times [2022-01-11 06:27:04,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:27:04,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266150670] [2022-01-11 06:27:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:27:04,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:27:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:27:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:27:04,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:27:04,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266150670] [2022-01-11 06:27:04,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266150670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:27:04,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:27:04,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:27:04,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423358357] [2022-01-11 06:27:04,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:27:04,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:27:04,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:27:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:27:04,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:04,641 INFO L87 Difference]: Start difference. First operand 13037 states and 21344 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:27:06,541 INFO L93 Difference]: Finished difference Result 22153 states and 36538 transitions. [2022-01-11 06:27:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:27:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-11 06:27:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:27:06,576 INFO L225 Difference]: With dead ends: 22153 [2022-01-11 06:27:06,576 INFO L226 Difference]: Without dead ends: 17127 [2022-01-11 06:27:06,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:06,592 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 187 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:27:06,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1146 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:27:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17127 states. [2022-01-11 06:27:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17127 to 17125. [2022-01-11 06:27:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17125 states, 17124 states have (on average 1.6398037841625788) internal successors, (28080), 17124 states have internal predecessors, (28080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17125 states to 17125 states and 28080 transitions. [2022-01-11 06:27:08,272 INFO L78 Accepts]: Start accepts. Automaton has 17125 states and 28080 transitions. Word has length 125 [2022-01-11 06:27:08,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:27:08,272 INFO L470 AbstractCegarLoop]: Abstraction has 17125 states and 28080 transitions. [2022-01-11 06:27:08,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:08,273 INFO L276 IsEmpty]: Start isEmpty. Operand 17125 states and 28080 transitions. [2022-01-11 06:27:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 06:27:08,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:27:08,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:27:08,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:27:08,348 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:27:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:27:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash 257358922, now seen corresponding path program 1 times [2022-01-11 06:27:08,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:27:08,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388723761] [2022-01-11 06:27:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:27:08,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:27:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:27:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:27:08,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:27:08,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388723761] [2022-01-11 06:27:08,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388723761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:27:08,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:27:08,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:27:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924163758] [2022-01-11 06:27:08,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:27:08,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:27:08,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:27:08,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:27:08,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:27:08,498 INFO L87 Difference]: Start difference. First operand 17125 states and 28080 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:27:11,972 INFO L93 Difference]: Finished difference Result 49967 states and 81905 transitions. [2022-01-11 06:27:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:27:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-11 06:27:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:27:12,042 INFO L225 Difference]: With dead ends: 49967 [2022-01-11 06:27:12,042 INFO L226 Difference]: Without dead ends: 33491 [2022-01-11 06:27:12,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:27:12,070 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1176 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:27:12,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1174 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:27:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33491 states. [2022-01-11 06:27:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33491 to 33489. [2022-01-11 06:27:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33489 states, 33488 states have (on average 1.6340480172001912) internal successors, (54721), 33488 states have internal predecessors, (54721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33489 states to 33489 states and 54721 transitions. [2022-01-11 06:27:15,875 INFO L78 Accepts]: Start accepts. Automaton has 33489 states and 54721 transitions. Word has length 125 [2022-01-11 06:27:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:27:15,876 INFO L470 AbstractCegarLoop]: Abstraction has 33489 states and 54721 transitions. [2022-01-11 06:27:15,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 33489 states and 54721 transitions. [2022-01-11 06:27:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:27:15,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:27:15,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:27:15,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:27:15,893 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:27:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:27:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1606374147, now seen corresponding path program 1 times [2022-01-11 06:27:15,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:27:15,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838304369] [2022-01-11 06:27:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:27:15,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:27:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:27:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:27:16,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:27:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838304369] [2022-01-11 06:27:16,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838304369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:27:16,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:27:16,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:27:16,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869363257] [2022-01-11 06:27:16,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:27:16,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:27:16,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:27:16,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:27:16,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:27:16,028 INFO L87 Difference]: Start difference. First operand 33489 states and 54721 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:27:22,317 INFO L93 Difference]: Finished difference Result 86557 states and 140921 transitions. [2022-01-11 06:27:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:27:22,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-11 06:27:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:27:22,429 INFO L225 Difference]: With dead ends: 86557 [2022-01-11 06:27:22,429 INFO L226 Difference]: Without dead ends: 53488 [2022-01-11 06:27:22,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:27:22,469 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1383 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:27:22,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 2155 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:27:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53488 states. [2022-01-11 06:27:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53488 to 34160. [2022-01-11 06:27:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34160 states, 34159 states have (on average 1.634737550865072) internal successors, (55841), 34159 states have internal predecessors, (55841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34160 states to 34160 states and 55841 transitions. [2022-01-11 06:27:26,632 INFO L78 Accepts]: Start accepts. Automaton has 34160 states and 55841 transitions. Word has length 127 [2022-01-11 06:27:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:27:26,633 INFO L470 AbstractCegarLoop]: Abstraction has 34160 states and 55841 transitions. [2022-01-11 06:27:26,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34160 states and 55841 transitions. [2022-01-11 06:27:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-11 06:27:26,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:27:26,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:27:26,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:27:26,649 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:27:26,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:27:26,649 INFO L85 PathProgramCache]: Analyzing trace with hash 808122584, now seen corresponding path program 1 times [2022-01-11 06:27:26,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:27:26,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618371085] [2022-01-11 06:27:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:27:26,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:27:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:27:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:27:26,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:27:26,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618371085] [2022-01-11 06:27:26,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618371085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:27:26,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:27:26,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:27:26,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925681763] [2022-01-11 06:27:26,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:27:26,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:27:26,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:27:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:27:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:26,699 INFO L87 Difference]: Start difference. First operand 34160 states and 55841 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:27:34,980 INFO L93 Difference]: Finished difference Result 101063 states and 165113 transitions. [2022-01-11 06:27:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:27:34,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-01-11 06:27:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:27:35,123 INFO L225 Difference]: With dead ends: 101063 [2022-01-11 06:27:35,123 INFO L226 Difference]: Without dead ends: 67644 [2022-01-11 06:27:35,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:35,168 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 470 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:27:35,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 1501 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:27:35,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67644 states. [2022-01-11 06:27:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67644 to 34438. [2022-01-11 06:27:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34438 states, 34437 states have (on average 1.6312686935563492) internal successors, (56176), 34437 states have internal predecessors, (56176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34438 states to 34438 states and 56176 transitions. [2022-01-11 06:27:40,060 INFO L78 Accepts]: Start accepts. Automaton has 34438 states and 56176 transitions. Word has length 129 [2022-01-11 06:27:40,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:27:40,060 INFO L470 AbstractCegarLoop]: Abstraction has 34438 states and 56176 transitions. [2022-01-11 06:27:40,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:40,060 INFO L276 IsEmpty]: Start isEmpty. Operand 34438 states and 56176 transitions. [2022-01-11 06:27:40,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-11 06:27:40,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:27:40,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:27:40,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:27:40,077 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:27:40,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:27:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1348687387, now seen corresponding path program 1 times [2022-01-11 06:27:40,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:27:40,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569816285] [2022-01-11 06:27:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:27:40,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:27:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:27:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:27:40,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:27:40,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569816285] [2022-01-11 06:27:40,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569816285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:27:40,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:27:40,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:27:40,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901485002] [2022-01-11 06:27:40,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:27:40,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:27:40,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:27:40,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:27:40,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:40,185 INFO L87 Difference]: Start difference. First operand 34438 states and 56176 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:27:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:27:48,409 INFO L93 Difference]: Finished difference Result 97798 states and 159346 transitions. [2022-01-11 06:27:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:27:48,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-01-11 06:27:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:27:48,540 INFO L225 Difference]: With dead ends: 97798 [2022-01-11 06:27:48,540 INFO L226 Difference]: Without dead ends: 66684 [2022-01-11 06:27:48,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:27:48,584 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 376 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:27:48,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1476 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:27:48,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66684 states.