/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:16:54,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:16:54,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:16:54,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:16:54,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:16:54,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:16:54,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:16:54,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:16:54,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:16:54,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:16:54,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:16:54,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:16:54,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:16:54,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:16:54,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:16:54,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:16:54,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:16:54,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:16:54,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:16:54,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:16:54,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:16:54,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:16:54,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:16:54,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:16:54,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:16:54,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:16:54,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:16:54,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:16:54,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:16:54,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:16:54,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:16:54,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:16:54,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:16:54,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:16:54,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:16:54,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:16:54,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:16:54,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:16:54,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:16:54,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:16:54,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:16:54,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:16:54,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:16:54,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:16:54,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:16:54,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:16:54,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:16:54,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:16:54,269 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:16:54,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:16:54,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:16:54,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:16:54,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:16:54,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:16:54,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:16:54,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:16:54,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:16:54,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:16:54,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:16:54,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:16:54,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:16:54,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:16:54,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:16:54,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:16:54,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:16:54,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:16:54,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:16:54,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:16:54,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:16:54,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:16:54,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:16:54,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:16:54,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:16:54,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:16:54,272 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:16:54,272 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:16:54,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:16:54,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:16:54,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:16:54,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:16:54,440 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:16:54,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c [2022-01-10 12:16:54,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86daea32a/60ca415690f8499abdb8e08e9398a820/FLAGe6cbd65a0 [2022-01-10 12:16:54,914 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:16:54,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c [2022-01-10 12:16:54,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86daea32a/60ca415690f8499abdb8e08e9398a820/FLAGe6cbd65a0 [2022-01-10 12:16:54,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86daea32a/60ca415690f8499abdb8e08e9398a820 [2022-01-10 12:16:54,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:16:54,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:16:54,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:16:54,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:16:54,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:16:54,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:16:54" (1/1) ... [2022-01-10 12:16:54,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1207fcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:54, skipping insertion in model container [2022-01-10 12:16:54,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:16:54" (1/1) ... [2022-01-10 12:16:54,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:16:55,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:16:55,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c[64112,64125] [2022-01-10 12:16:55,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:16:55,384 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:16:55,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:16:55,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c[64112,64125] [2022-01-10 12:16:55,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:16:55,493 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:16:55,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c[64112,64125] [2022-01-10 12:16:55,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:16:55,573 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:16:55,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55 WrapperNode [2022-01-10 12:16:55,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:16:55,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:16:55,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:16:55,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:16:55,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,662 INFO L137 Inliner]: procedures = 133, calls = 218, calls flagged for inlining = 129, calls inlined = 159, statements flattened = 2375 [2022-01-10 12:16:55,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:16:55,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:16:55,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:16:55,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:16:55,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:16:55,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:16:55,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:16:55,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:16:55,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (1/1) ... [2022-01-10 12:16:55,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:16:55,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:16:55,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:16:55,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:16:55,797 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:16:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:16:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:16:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:16:55,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:16:55,987 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:16:55,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:16:56,833 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:16:56,845 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:16:56,845 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:16:56,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:16:56 BoogieIcfgContainer [2022-01-10 12:16:56,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:16:56,850 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:16:56,851 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:16:56,852 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:16:56,854 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:16:56" (1/1) ... [2022-01-10 12:16:57,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:16:57 BasicIcfg [2022-01-10 12:16:57,150 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:16:57,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:16:57,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:16:57,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:16:57,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:16:54" (1/4) ... [2022-01-10 12:16:57,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd8d4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:16:57, skipping insertion in model container [2022-01-10 12:16:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:16:55" (2/4) ... [2022-01-10 12:16:57,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd8d4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:16:57, skipping insertion in model container [2022-01-10 12:16:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:16:56" (3/4) ... [2022-01-10 12:16:57,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd8d4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:16:57, skipping insertion in model container [2022-01-10 12:16:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:16:57" (4/4) ... [2022-01-10 12:16:57,155 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product30.cil.cTransformedIcfg [2022-01-10 12:16:57,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:16:57,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:16:57,203 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:16:57,208 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:16:57,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:16:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 551 states have (on average 1.693284936479129) internal successors, (933), 553 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 12:16:57,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:57,246 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] [2022-01-10 12:16:57,246 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash -832518939, now seen corresponding path program 1 times [2022-01-10 12:16:57,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:57,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638495978] [2022-01-10 12:16:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:57,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:57,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:57,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638495978] [2022-01-10 12:16:57,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638495978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:57,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:57,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:16:57,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515727616] [2022-01-10 12:16:57,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:57,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:16:57,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:57,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:16:57,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:16:57,573 INFO L87 Difference]: Start difference. First operand has 554 states, 551 states have (on average 1.693284936479129) internal successors, (933), 553 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:57,624 INFO L93 Difference]: Finished difference Result 847 states and 1406 transitions. [2022-01-10 12:16:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:16:57,629 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 12:16:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:57,638 INFO L225 Difference]: With dead ends: 847 [2022-01-10 12:16:57,638 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 12:16:57,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:16:57,645 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:57,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:16:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 12:16:57,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-01-10 12:16:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.703056768558952) internal successors, (780), 459 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 780 transitions. [2022-01-10 12:16:57,693 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 780 transitions. Word has length 54 [2022-01-10 12:16:57,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:57,694 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 780 transitions. [2022-01-10 12:16:57,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 780 transitions. [2022-01-10 12:16:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 12:16:57,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:57,696 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] [2022-01-10 12:16:57,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:16:57,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1795897725, now seen corresponding path program 1 times [2022-01-10 12:16:57,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:57,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527358155] [2022-01-10 12:16:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:57,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:57,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527358155] [2022-01-10 12:16:57,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527358155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:57,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:57,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:16:57,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509228965] [2022-01-10 12:16:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:57,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:16:57,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:16:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:16:57,895 INFO L87 Difference]: Start difference. First operand 460 states and 780 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:57,986 INFO L93 Difference]: Finished difference Result 901 states and 1532 transitions. [2022-01-10 12:16:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:16:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 12:16:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:57,989 INFO L225 Difference]: With dead ends: 901 [2022-01-10 12:16:57,989 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 12:16:57,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:16:57,991 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 755 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:57,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 774 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:16:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 12:16:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-01-10 12:16:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6986899563318778) internal successors, (778), 459 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 778 transitions. [2022-01-10 12:16:58,021 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 778 transitions. Word has length 55 [2022-01-10 12:16:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:58,021 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 778 transitions. [2022-01-10 12:16:58,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 778 transitions. [2022-01-10 12:16:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:16:58,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:58,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:16:58,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:16:58,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:58,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1488817085, now seen corresponding path program 1 times [2022-01-10 12:16:58,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:58,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031262154] [2022-01-10 12:16:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:58,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:58,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:58,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031262154] [2022-01-10 12:16:58,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031262154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:58,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:58,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:16:58,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247535620] [2022-01-10 12:16:58,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:58,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:16:58,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:58,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:16:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:16:58,150 INFO L87 Difference]: Start difference. First operand 460 states and 778 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:58,358 INFO L93 Difference]: Finished difference Result 2168 states and 3686 transitions. [2022-01-10 12:16:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:16:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 12:16:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:58,366 INFO L225 Difference]: With dead ends: 2168 [2022-01-10 12:16:58,366 INFO L226 Difference]: Without dead ends: 1732 [2022-01-10 12:16:58,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:16:58,374 INFO L933 BasicCegarLoop]: 1479 mSDtfsCounter, 3673 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:58,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3673 Valid, 3685 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:16:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2022-01-10 12:16:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 460. [2022-01-10 12:16:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6965065502183405) internal successors, (777), 459 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 777 transitions. [2022-01-10 12:16:58,413 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 777 transitions. Word has length 57 [2022-01-10 12:16:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:58,414 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 777 transitions. [2022-01-10 12:16:58,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 777 transitions. [2022-01-10 12:16:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:16:58,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:58,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:16:58,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:16:58,417 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2009562805, now seen corresponding path program 1 times [2022-01-10 12:16:58,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:58,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441837199] [2022-01-10 12:16:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:58,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:58,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:58,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441837199] [2022-01-10 12:16:58,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441837199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:58,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:58,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:16:58,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172229411] [2022-01-10 12:16:58,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:58,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:16:58,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:16:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:16:58,531 INFO L87 Difference]: Start difference. First operand 460 states and 777 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:58,575 INFO L93 Difference]: Finished difference Result 905 states and 1532 transitions. [2022-01-10 12:16:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:16:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 12:16:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:58,577 INFO L225 Difference]: With dead ends: 905 [2022-01-10 12:16:58,578 INFO L226 Difference]: Without dead ends: 474 [2022-01-10 12:16:58,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:16:58,583 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 756 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:58,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 813 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:16:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-10 12:16:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 460. [2022-01-10 12:16:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6943231441048034) internal successors, (776), 459 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 776 transitions. [2022-01-10 12:16:58,609 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 776 transitions. Word has length 58 [2022-01-10 12:16:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:58,610 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 776 transitions. [2022-01-10 12:16:58,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 776 transitions. [2022-01-10 12:16:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:16:58,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:58,612 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] [2022-01-10 12:16:58,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:16:58,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1013177694, now seen corresponding path program 1 times [2022-01-10 12:16:58,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:58,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142220220] [2022-01-10 12:16:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:58,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:58,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:58,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142220220] [2022-01-10 12:16:58,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142220220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:58,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:58,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:16:58,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546096959] [2022-01-10 12:16:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:58,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:16:58,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:16:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:16:58,734 INFO L87 Difference]: Start difference. First operand 460 states and 776 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:58,859 INFO L93 Difference]: Finished difference Result 1314 states and 2228 transitions. [2022-01-10 12:16:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:16:58,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 12:16:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:58,862 INFO L225 Difference]: With dead ends: 1314 [2022-01-10 12:16:58,862 INFO L226 Difference]: Without dead ends: 888 [2022-01-10 12:16:58,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:16:58,863 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 3596 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3596 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:58,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3596 Valid, 1584 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:16:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-01-10 12:16:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 460. [2022-01-10 12:16:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6899563318777293) internal successors, (774), 459 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 774 transitions. [2022-01-10 12:16:58,889 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 774 transitions. Word has length 59 [2022-01-10 12:16:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:58,892 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 774 transitions. [2022-01-10 12:16:58,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 774 transitions. [2022-01-10 12:16:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:16:58,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:58,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:16:58,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:16:58,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash 227094203, now seen corresponding path program 1 times [2022-01-10 12:16:58,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:58,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116846517] [2022-01-10 12:16:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:58,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:58,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:58,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116846517] [2022-01-10 12:16:58,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116846517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:58,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:58,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:16:58,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792895504] [2022-01-10 12:16:58,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:58,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:16:58,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:16:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:16:58,984 INFO L87 Difference]: Start difference. First operand 460 states and 774 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:59,320 INFO L93 Difference]: Finished difference Result 2658 states and 4398 transitions. [2022-01-10 12:16:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:16:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:16:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:59,329 INFO L225 Difference]: With dead ends: 2658 [2022-01-10 12:16:59,329 INFO L226 Difference]: Without dead ends: 2476 [2022-01-10 12:16:59,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:16:59,332 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 4611 mSDsluCounter, 4330 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 5415 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:59,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 5415 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:16:59,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-01-10 12:16:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 858. [2022-01-10 12:16:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 1.6927570093457944) internal successors, (1449), 857 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1449 transitions. [2022-01-10 12:16:59,386 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1449 transitions. Word has length 61 [2022-01-10 12:16:59,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:59,387 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1449 transitions. [2022-01-10 12:16:59,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,387 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1449 transitions. [2022-01-10 12:16:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:16:59,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:59,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:16:59,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:16:59,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:59,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:59,390 INFO L85 PathProgramCache]: Analyzing trace with hash -766974534, now seen corresponding path program 1 times [2022-01-10 12:16:59,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:59,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618478459] [2022-01-10 12:16:59,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:59,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:59,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:59,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618478459] [2022-01-10 12:16:59,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618478459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:59,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:59,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:16:59,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335039210] [2022-01-10 12:16:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:59,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:16:59,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:16:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:16:59,489 INFO L87 Difference]: Start difference. First operand 858 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:59,611 INFO L93 Difference]: Finished difference Result 1415 states and 2335 transitions. [2022-01-10 12:16:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:16:59,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 12:16:59,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:59,615 INFO L225 Difference]: With dead ends: 1415 [2022-01-10 12:16:59,615 INFO L226 Difference]: Without dead ends: 1085 [2022-01-10 12:16:59,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:16:59,617 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 1769 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:59,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 1866 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:16:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-01-10 12:16:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 858. [2022-01-10 12:16:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 1.6880841121495327) internal successors, (1445), 857 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1445 transitions. [2022-01-10 12:16:59,660 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1445 transitions. Word has length 62 [2022-01-10 12:16:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:59,660 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1445 transitions. [2022-01-10 12:16:59,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1445 transitions. [2022-01-10 12:16:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:16:59,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:59,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:16:59,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:16:59,662 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1029274491, now seen corresponding path program 1 times [2022-01-10 12:16:59,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:59,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210298884] [2022-01-10 12:16:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:59,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:59,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:59,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210298884] [2022-01-10 12:16:59,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210298884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:59,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:59,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:16:59,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732796640] [2022-01-10 12:16:59,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:59,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:16:59,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:16:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:16:59,725 INFO L87 Difference]: Start difference. First operand 858 states and 1445 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:59,884 INFO L93 Difference]: Finished difference Result 2451 states and 4164 transitions. [2022-01-10 12:16:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:16:59,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 12:16:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:59,890 INFO L225 Difference]: With dead ends: 2451 [2022-01-10 12:16:59,890 INFO L226 Difference]: Without dead ends: 1630 [2022-01-10 12:16:59,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:16:59,893 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 2253 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:59,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 2172 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:16:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2022-01-10 12:16:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 858. [2022-01-10 12:16:59,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 1.685747663551402) internal successors, (1443), 857 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1443 transitions. [2022-01-10 12:16:59,950 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1443 transitions. Word has length 62 [2022-01-10 12:16:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:59,950 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1443 transitions. [2022-01-10 12:16:59,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1443 transitions. [2022-01-10 12:16:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:16:59,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:59,951 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] [2022-01-10 12:16:59,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:16:59,951 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:16:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash 670212871, now seen corresponding path program 1 times [2022-01-10 12:16:59,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:59,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027635554] [2022-01-10 12:16:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:59,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:00,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027635554] [2022-01-10 12:17:00,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027635554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:00,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:00,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:00,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072929539] [2022-01-10 12:17:00,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:00,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:00,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:00,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:00,059 INFO L87 Difference]: Start difference. First operand 858 states and 1443 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:00,633 INFO L93 Difference]: Finished difference Result 3346 states and 5364 transitions. [2022-01-10 12:17:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:17:00,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 12:17:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:00,642 INFO L225 Difference]: With dead ends: 3346 [2022-01-10 12:17:00,642 INFO L226 Difference]: Without dead ends: 3058 [2022-01-10 12:17:00,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:00,643 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 6523 mSDsluCounter, 5502 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6523 SdHoareTripleChecker+Valid, 6416 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:00,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6523 Valid, 6416 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:17:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2022-01-10 12:17:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 1623. [2022-01-10 12:17:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1621 states have (on average 1.6995681677976557) internal successors, (2755), 1622 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2755 transitions. [2022-01-10 12:17:00,764 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2755 transitions. Word has length 63 [2022-01-10 12:17:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:00,765 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2755 transitions. [2022-01-10 12:17:00,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2755 transitions. [2022-01-10 12:17:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:17:00,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:00,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:00,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:17:00,767 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1404187233, now seen corresponding path program 1 times [2022-01-10 12:17:00,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:00,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841306582] [2022-01-10 12:17:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:00,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:00,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:00,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841306582] [2022-01-10 12:17:00,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841306582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:00,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:00,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:00,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170430492] [2022-01-10 12:17:00,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:00,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:00,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:00,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:00,871 INFO L87 Difference]: Start difference. First operand 1623 states and 2755 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:01,642 INFO L93 Difference]: Finished difference Result 5850 states and 9462 transitions. [2022-01-10 12:17:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:17:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:17:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:01,668 INFO L225 Difference]: With dead ends: 5850 [2022-01-10 12:17:01,668 INFO L226 Difference]: Without dead ends: 5311 [2022-01-10 12:17:01,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:01,673 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 6511 mSDsluCounter, 4793 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:01,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6511 Valid, 5567 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:17:01,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2022-01-10 12:17:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 3158. [2022-01-10 12:17:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3156 states have (on average 1.7069074778200253) internal successors, (5387), 3157 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 5387 transitions. [2022-01-10 12:17:01,878 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 5387 transitions. Word has length 64 [2022-01-10 12:17:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:01,878 INFO L470 AbstractCegarLoop]: Abstraction has 3158 states and 5387 transitions. [2022-01-10 12:17:01,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 5387 transitions. [2022-01-10 12:17:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:17:01,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:01,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:01,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:17:01,889 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1383228254, now seen corresponding path program 1 times [2022-01-10 12:17:01,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:01,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590001611] [2022-01-10 12:17:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:01,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:01,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:01,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590001611] [2022-01-10 12:17:01,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590001611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:01,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:01,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:01,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353328385] [2022-01-10 12:17:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:01,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:01,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:01,962 INFO L87 Difference]: Start difference. First operand 3158 states and 5387 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:02,809 INFO L93 Difference]: Finished difference Result 9642 states and 15597 transitions. [2022-01-10 12:17:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:17:02,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:17:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:02,833 INFO L225 Difference]: With dead ends: 9642 [2022-01-10 12:17:02,834 INFO L226 Difference]: Without dead ends: 8756 [2022-01-10 12:17:02,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:02,837 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 2511 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:02,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 2919 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2022-01-10 12:17:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 4378. [2022-01-10 12:17:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 4376 states have (on average 1.6759597806215722) internal successors, (7334), 4377 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 7334 transitions. [2022-01-10 12:17:03,241 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 7334 transitions. Word has length 64 [2022-01-10 12:17:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:03,241 INFO L470 AbstractCegarLoop]: Abstraction has 4378 states and 7334 transitions. [2022-01-10 12:17:03,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 7334 transitions. [2022-01-10 12:17:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:17:03,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:03,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:03,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:17:03,244 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:03,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2006265387, now seen corresponding path program 1 times [2022-01-10 12:17:03,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:03,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988465593] [2022-01-10 12:17:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:03,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:03,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:03,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988465593] [2022-01-10 12:17:03,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988465593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:03,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:03,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:03,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391379977] [2022-01-10 12:17:03,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:03,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:03,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:03,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:03,351 INFO L87 Difference]: Start difference. First operand 4378 states and 7334 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:03,992 INFO L93 Difference]: Finished difference Result 7197 states and 11733 transitions. [2022-01-10 12:17:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:17:03,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:17:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:04,001 INFO L225 Difference]: With dead ends: 7197 [2022-01-10 12:17:04,001 INFO L226 Difference]: Without dead ends: 5413 [2022-01-10 12:17:04,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:17:04,004 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 2150 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:04,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2150 Valid, 3983 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2022-01-10 12:17:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4322. [2022-01-10 12:17:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4320 states have (on average 1.6717592592592592) internal successors, (7222), 4321 states have internal predecessors, (7222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 7222 transitions. [2022-01-10 12:17:04,360 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 7222 transitions. Word has length 65 [2022-01-10 12:17:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:04,360 INFO L470 AbstractCegarLoop]: Abstraction has 4322 states and 7222 transitions. [2022-01-10 12:17:04,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 7222 transitions. [2022-01-10 12:17:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:17:04,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:04,365 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] [2022-01-10 12:17:04,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:17:04,365 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:04,366 INFO L85 PathProgramCache]: Analyzing trace with hash -781889667, now seen corresponding path program 1 times [2022-01-10 12:17:04,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:04,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191690999] [2022-01-10 12:17:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:04,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:04,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:04,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191690999] [2022-01-10 12:17:04,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191690999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:04,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:04,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:04,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912034915] [2022-01-10 12:17:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:04,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:04,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:04,491 INFO L87 Difference]: Start difference. First operand 4322 states and 7222 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:07,062 INFO L93 Difference]: Finished difference Result 17616 states and 28129 transitions. [2022-01-10 12:17:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:17:07,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 12:17:07,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:07,099 INFO L225 Difference]: With dead ends: 17616 [2022-01-10 12:17:07,100 INFO L226 Difference]: Without dead ends: 17506 [2022-01-10 12:17:07,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 12:17:07,106 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 2850 mSDsluCounter, 6448 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 8019 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:07,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 8019 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:17:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17506 states. [2022-01-10 12:17:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17506 to 5620. [2022-01-10 12:17:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 5618 states have (on average 1.6548593805624778) internal successors, (9297), 5619 states have internal predecessors, (9297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 9297 transitions. [2022-01-10 12:17:07,831 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 9297 transitions. Word has length 66 [2022-01-10 12:17:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:07,831 INFO L470 AbstractCegarLoop]: Abstraction has 5620 states and 9297 transitions. [2022-01-10 12:17:07,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 9297 transitions. [2022-01-10 12:17:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:17:07,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:07,835 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] [2022-01-10 12:17:07,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:17:07,835 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1532173391, now seen corresponding path program 1 times [2022-01-10 12:17:07,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:07,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969130088] [2022-01-10 12:17:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:07,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:07,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:07,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969130088] [2022-01-10 12:17:07,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969130088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:07,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:07,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:07,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15456611] [2022-01-10 12:17:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:07,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:07,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:07,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:07,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:07,911 INFO L87 Difference]: Start difference. First operand 5620 states and 9297 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:09,877 INFO L93 Difference]: Finished difference Result 14717 states and 23546 transitions. [2022-01-10 12:17:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:17:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:17:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:09,903 INFO L225 Difference]: With dead ends: 14717 [2022-01-10 12:17:09,903 INFO L226 Difference]: Without dead ends: 13385 [2022-01-10 12:17:09,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:17:09,909 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 2305 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:09,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2305 Valid, 3691 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2022-01-10 12:17:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 5770. [2022-01-10 12:17:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 5768 states have (on average 1.6501386962552012) internal successors, (9518), 5769 states have internal predecessors, (9518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 9518 transitions. [2022-01-10 12:17:10,601 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 9518 transitions. Word has length 67 [2022-01-10 12:17:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:10,601 INFO L470 AbstractCegarLoop]: Abstraction has 5770 states and 9518 transitions. [2022-01-10 12:17:10,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 9518 transitions. [2022-01-10 12:17:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:17:10,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:10,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:10,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:17:10,606 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 253952276, now seen corresponding path program 1 times [2022-01-10 12:17:10,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:10,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761927836] [2022-01-10 12:17:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:10,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:10,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:10,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761927836] [2022-01-10 12:17:10,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761927836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:10,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:10,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:10,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067774280] [2022-01-10 12:17:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:10,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:10,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:10,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:10,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:10,698 INFO L87 Difference]: Start difference. First operand 5770 states and 9518 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:12,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:12,973 INFO L93 Difference]: Finished difference Result 14727 states and 23533 transitions. [2022-01-10 12:17:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:17:12,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:17:12,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:12,994 INFO L225 Difference]: With dead ends: 14727 [2022-01-10 12:17:12,994 INFO L226 Difference]: Without dead ends: 13308 [2022-01-10 12:17:12,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:17:12,999 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 2280 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:12,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 3699 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:13,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13308 states. [2022-01-10 12:17:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13308 to 5730. [2022-01-10 12:17:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5728 states have (on average 1.6511871508379887) internal successors, (9458), 5729 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 9458 transitions. [2022-01-10 12:17:13,702 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 9458 transitions. Word has length 68 [2022-01-10 12:17:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:13,702 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 9458 transitions. [2022-01-10 12:17:13,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 9458 transitions. [2022-01-10 12:17:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:17:13,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:13,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:13,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:17:13,708 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:13,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash 424973768, now seen corresponding path program 1 times [2022-01-10 12:17:13,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:13,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627159653] [2022-01-10 12:17:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:13,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:13,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:13,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627159653] [2022-01-10 12:17:13,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627159653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:13,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:13,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:13,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416806605] [2022-01-10 12:17:13,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:13,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:13,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:13,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:13,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:13,796 INFO L87 Difference]: Start difference. First operand 5730 states and 9458 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:15,289 INFO L93 Difference]: Finished difference Result 11333 states and 18211 transitions. [2022-01-10 12:17:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:17:15,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:17:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:15,303 INFO L225 Difference]: With dead ends: 11333 [2022-01-10 12:17:15,303 INFO L226 Difference]: Without dead ends: 9723 [2022-01-10 12:17:15,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:17:15,309 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 1729 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 4040 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:15,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 4040 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2022-01-10 12:17:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 6053. [2022-01-10 12:17:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6053 states, 6051 states have (on average 1.646504709965295) internal successors, (9963), 6052 states have internal predecessors, (9963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6053 states to 6053 states and 9963 transitions. [2022-01-10 12:17:16,081 INFO L78 Accepts]: Start accepts. Automaton has 6053 states and 9963 transitions. Word has length 68 [2022-01-10 12:17:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:16,081 INFO L470 AbstractCegarLoop]: Abstraction has 6053 states and 9963 transitions. [2022-01-10 12:17:16,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6053 states and 9963 transitions. [2022-01-10 12:17:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:17:16,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:16,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:16,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:17:16,085 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:16,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1148496561, now seen corresponding path program 1 times [2022-01-10 12:17:16,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:16,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938990240] [2022-01-10 12:17:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:16,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:16,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:16,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938990240] [2022-01-10 12:17:16,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938990240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:16,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:16,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:16,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429570923] [2022-01-10 12:17:16,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:16,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:17:16,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:17:16,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:17:16,155 INFO L87 Difference]: Start difference. First operand 6053 states and 9963 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:17,124 INFO L93 Difference]: Finished difference Result 9351 states and 15126 transitions. [2022-01-10 12:17:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:17:17,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:17,133 INFO L225 Difference]: With dead ends: 9351 [2022-01-10 12:17:17,133 INFO L226 Difference]: Without dead ends: 6521 [2022-01-10 12:17:17,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:17,136 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 714 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:17,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 2591 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2022-01-10 12:17:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 4782. [2022-01-10 12:17:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 4780 states have (on average 1.6543933054393305) internal successors, (7908), 4781 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7908 transitions. [2022-01-10 12:17:17,727 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7908 transitions. Word has length 68 [2022-01-10 12:17:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:17,727 INFO L470 AbstractCegarLoop]: Abstraction has 4782 states and 7908 transitions. [2022-01-10 12:17:17,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7908 transitions. [2022-01-10 12:17:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:17:17,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:17,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:17,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:17:17,731 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 426286254, now seen corresponding path program 1 times [2022-01-10 12:17:17,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:17,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950707674] [2022-01-10 12:17:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:17,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:17,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:17,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950707674] [2022-01-10 12:17:17,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950707674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:17,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:17,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:17,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020527029] [2022-01-10 12:17:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:17,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:17,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:17,813 INFO L87 Difference]: Start difference. First operand 4782 states and 7908 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:19,276 INFO L93 Difference]: Finished difference Result 8844 states and 14228 transitions. [2022-01-10 12:17:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:17:19,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:17:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:19,286 INFO L225 Difference]: With dead ends: 8844 [2022-01-10 12:17:19,286 INFO L226 Difference]: Without dead ends: 8289 [2022-01-10 12:17:19,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:17:19,288 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 3147 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 5835 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:19,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3147 Valid, 5835 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2022-01-10 12:17:19,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 4807. [2022-01-10 12:17:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4807 states, 4805 states have (on average 1.6509885535900104) internal successors, (7933), 4806 states have internal predecessors, (7933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 7933 transitions. [2022-01-10 12:17:19,882 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 7933 transitions. Word has length 69 [2022-01-10 12:17:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:19,882 INFO L470 AbstractCegarLoop]: Abstraction has 4807 states and 7933 transitions. [2022-01-10 12:17:19,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 7933 transitions. [2022-01-10 12:17:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:17:19,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:19,885 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] [2022-01-10 12:17:19,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:17:19,886 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash 331189397, now seen corresponding path program 1 times [2022-01-10 12:17:19,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:19,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466067798] [2022-01-10 12:17:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:19,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:19,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:19,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466067798] [2022-01-10 12:17:19,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466067798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:19,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:19,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:19,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763324359] [2022-01-10 12:17:19,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:19,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:19,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:19,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:19,971 INFO L87 Difference]: Start difference. First operand 4807 states and 7933 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:21,286 INFO L93 Difference]: Finished difference Result 9231 states and 14813 transitions. [2022-01-10 12:17:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:17:21,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 12:17:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:21,299 INFO L225 Difference]: With dead ends: 9231 [2022-01-10 12:17:21,299 INFO L226 Difference]: Without dead ends: 7055 [2022-01-10 12:17:21,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:17:21,304 INFO L933 BasicCegarLoop]: 949 mSDtfsCounter, 1622 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 3963 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:21,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1622 Valid, 3963 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2022-01-10 12:17:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 4560. [2022-01-10 12:17:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.6556262338232068) internal successors, (7548), 4559 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7548 transitions. [2022-01-10 12:17:21,890 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7548 transitions. Word has length 70 [2022-01-10 12:17:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:21,890 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7548 transitions. [2022-01-10 12:17:21,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7548 transitions. [2022-01-10 12:17:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 12:17:21,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:21,896 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] [2022-01-10 12:17:21,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:17:21,896 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:21,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:21,897 INFO L85 PathProgramCache]: Analyzing trace with hash -82817772, now seen corresponding path program 1 times [2022-01-10 12:17:21,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:21,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097432294] [2022-01-10 12:17:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:21,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:21,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:21,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097432294] [2022-01-10 12:17:21,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097432294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:21,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:21,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:21,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920137607] [2022-01-10 12:17:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:21,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:17:21,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:17:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:17:21,970 INFO L87 Difference]: Start difference. First operand 4560 states and 7548 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:22,741 INFO L93 Difference]: Finished difference Result 5964 states and 9637 transitions. [2022-01-10 12:17:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:17:22,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-01-10 12:17:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:22,747 INFO L225 Difference]: With dead ends: 5964 [2022-01-10 12:17:22,747 INFO L226 Difference]: Without dead ends: 5199 [2022-01-10 12:17:22,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:22,748 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 710 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:22,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1752 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2022-01-10 12:17:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 4560. [2022-01-10 12:17:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.6551875411274402) internal successors, (7546), 4559 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7546 transitions. [2022-01-10 12:17:23,302 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7546 transitions. Word has length 113 [2022-01-10 12:17:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:23,303 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7546 transitions. [2022-01-10 12:17:23,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7546 transitions. [2022-01-10 12:17:23,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 12:17:23,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:23,308 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] [2022-01-10 12:17:23,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:17:23,308 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash 360793651, now seen corresponding path program 1 times [2022-01-10 12:17:23,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:23,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525343480] [2022-01-10 12:17:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:23,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:23,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:23,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525343480] [2022-01-10 12:17:23,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525343480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:23,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:23,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:23,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421122358] [2022-01-10 12:17:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:23,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:23,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:23,444 INFO L87 Difference]: Start difference. First operand 4560 states and 7546 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:24,829 INFO L93 Difference]: Finished difference Result 10156 states and 16338 transitions. [2022-01-10 12:17:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:17:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-01-10 12:17:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:24,839 INFO L225 Difference]: With dead ends: 10156 [2022-01-10 12:17:24,839 INFO L226 Difference]: Without dead ends: 8377 [2022-01-10 12:17:24,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:24,843 INFO L933 BasicCegarLoop]: 1321 mSDtfsCounter, 1482 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:24,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 4037 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8377 states. [2022-01-10 12:17:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8377 to 4816. [2022-01-10 12:17:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 4815 states have (on average 1.6436137071651091) internal successors, (7914), 4815 states have internal predecessors, (7914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 7914 transitions. [2022-01-10 12:17:25,509 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 7914 transitions. Word has length 113 [2022-01-10 12:17:25,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:25,510 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 7914 transitions. [2022-01-10 12:17:25,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 7914 transitions. [2022-01-10 12:17:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 12:17:25,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:25,516 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] [2022-01-10 12:17:25,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:17:25,516 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 436101671, now seen corresponding path program 1 times [2022-01-10 12:17:25,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:25,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199747628] [2022-01-10 12:17:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:25,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:25,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199747628] [2022-01-10 12:17:25,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199747628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:25,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:25,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:25,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773083482] [2022-01-10 12:17:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:25,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:25,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:25,602 INFO L87 Difference]: Start difference. First operand 4816 states and 7914 transitions. Second operand has 5 states, 5 states have (on average 22.8) 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) [2022-01-10 12:17:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:28,256 INFO L93 Difference]: Finished difference Result 14562 states and 22851 transitions. [2022-01-10 12:17:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:17:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) 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 [2022-01-10 12:17:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:28,273 INFO L225 Difference]: With dead ends: 14562 [2022-01-10 12:17:28,273 INFO L226 Difference]: Without dead ends: 13183 [2022-01-10 12:17:28,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:28,275 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1806 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:28,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1806 Valid, 3062 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13183 states. [2022-01-10 12:17:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13183 to 5648. [2022-01-10 12:17:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5648 states, 5647 states have (on average 1.6201522932530548) internal successors, (9149), 5647 states have internal predecessors, (9149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5648 states to 5648 states and 9149 transitions. [2022-01-10 12:17:29,107 INFO L78 Accepts]: Start accepts. Automaton has 5648 states and 9149 transitions. Word has length 114 [2022-01-10 12:17:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:29,107 INFO L470 AbstractCegarLoop]: Abstraction has 5648 states and 9149 transitions. [2022-01-10 12:17:29,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) 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) [2022-01-10 12:17:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5648 states and 9149 transitions. [2022-01-10 12:17:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:17:29,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:29,114 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] [2022-01-10 12:17:29,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:17:29,114 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash -720686603, now seen corresponding path program 1 times [2022-01-10 12:17:29,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:29,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983408606] [2022-01-10 12:17:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:29,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:29,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:29,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983408606] [2022-01-10 12:17:29,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983408606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:29,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:29,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:29,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747193287] [2022-01-10 12:17:29,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:29,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:29,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:29,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:29,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:29,226 INFO L87 Difference]: Start difference. First operand 5648 states and 9149 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:30,625 INFO L93 Difference]: Finished difference Result 8793 states and 13760 transitions. [2022-01-10 12:17:30,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:17:30,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 12:17:30,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:30,633 INFO L225 Difference]: With dead ends: 8793 [2022-01-10 12:17:30,633 INFO L226 Difference]: Without dead ends: 7910 [2022-01-10 12:17:30,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:30,635 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 686 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:30,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 3332 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7910 states. [2022-01-10 12:17:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7910 to 5680. [2022-01-10 12:17:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5679 states have (on average 1.6166578622997005) internal successors, (9181), 5679 states have internal predecessors, (9181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 9181 transitions. [2022-01-10 12:17:31,435 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 9181 transitions. Word has length 115 [2022-01-10 12:17:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:31,435 INFO L470 AbstractCegarLoop]: Abstraction has 5680 states and 9181 transitions. [2022-01-10 12:17:31,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 9181 transitions. [2022-01-10 12:17:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:17:31,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:31,442 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] [2022-01-10 12:17:31,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:17:31,443 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:31,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:31,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1950475947, now seen corresponding path program 1 times [2022-01-10 12:17:31,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:31,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906301345] [2022-01-10 12:17:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:31,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:31,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:31,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906301345] [2022-01-10 12:17:31,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906301345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:31,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:31,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:17:31,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891656021] [2022-01-10 12:17:31,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:31,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:17:31,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:17:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:17:31,549 INFO L87 Difference]: Start difference. First operand 5680 states and 9181 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:32,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:32,501 INFO L93 Difference]: Finished difference Result 7763 states and 12382 transitions. [2022-01-10 12:17:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:17:32,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 12:17:32,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:32,507 INFO L225 Difference]: With dead ends: 7763 [2022-01-10 12:17:32,507 INFO L226 Difference]: Without dead ends: 5712 [2022-01-10 12:17:32,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:17:32,510 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 1882 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 4832 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:32,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 4832 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2022-01-10 12:17:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 5680. [2022-01-10 12:17:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5679 states have (on average 1.6082056700123262) internal successors, (9133), 5679 states have internal predecessors, (9133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 9133 transitions. [2022-01-10 12:17:33,320 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 9133 transitions. Word has length 115 [2022-01-10 12:17:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:33,320 INFO L470 AbstractCegarLoop]: Abstraction has 5680 states and 9133 transitions. [2022-01-10 12:17:33,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 9133 transitions. [2022-01-10 12:17:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 12:17:33,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:33,327 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] [2022-01-10 12:17:33,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 12:17:33,327 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash -245981561, now seen corresponding path program 1 times [2022-01-10 12:17:33,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:33,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636927333] [2022-01-10 12:17:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:33,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:33,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:33,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636927333] [2022-01-10 12:17:33,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636927333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:33,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:33,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:33,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34472654] [2022-01-10 12:17:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:33,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:17:33,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:17:33,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:17:33,397 INFO L87 Difference]: Start difference. First operand 5680 states and 9133 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2022-01-10 12:17:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:35,735 INFO L93 Difference]: Finished difference Result 14143 states and 21623 transitions. [2022-01-10 12:17:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:35,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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 [2022-01-10 12:17:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:35,746 INFO L225 Difference]: With dead ends: 14143 [2022-01-10 12:17:35,746 INFO L226 Difference]: Without dead ends: 10911 [2022-01-10 12:17:35,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:35,749 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 657 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:35,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 2379 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10911 states. [2022-01-10 12:17:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10911 to 5740. [2022-01-10 12:17:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5739 states have (on average 1.6018470116745078) internal successors, (9193), 5739 states have internal predecessors, (9193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 9193 transitions. [2022-01-10 12:17:36,650 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 9193 transitions. Word has length 118 [2022-01-10 12:17:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:36,650 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 9193 transitions. [2022-01-10 12:17:36,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2022-01-10 12:17:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 9193 transitions. [2022-01-10 12:17:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 12:17:36,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:36,657 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] [2022-01-10 12:17:36,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 12:17:36,657 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash -19540530, now seen corresponding path program 1 times [2022-01-10 12:17:36,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:36,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797588092] [2022-01-10 12:17:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:36,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:36,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:36,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797588092] [2022-01-10 12:17:36,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797588092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:36,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:36,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:36,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602260254] [2022-01-10 12:17:36,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:36,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:36,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:36,743 INFO L87 Difference]: Start difference. First operand 5740 states and 9193 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 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) [2022-01-10 12:17:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:37,755 INFO L93 Difference]: Finished difference Result 6377 states and 10068 transitions. [2022-01-10 12:17:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:37,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 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 [2022-01-10 12:17:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:37,762 INFO L225 Difference]: With dead ends: 6377 [2022-01-10 12:17:37,762 INFO L226 Difference]: Without dead ends: 5740 [2022-01-10 12:17:37,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:37,763 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 581 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:37,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 2362 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2022-01-10 12:17:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5740. [2022-01-10 12:17:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5739 states have (on average 1.5990590695243074) internal successors, (9177), 5739 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 9177 transitions. [2022-01-10 12:17:38,717 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 9177 transitions. Word has length 118 [2022-01-10 12:17:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:38,718 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 9177 transitions. [2022-01-10 12:17:38,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 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) [2022-01-10 12:17:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 9177 transitions. [2022-01-10 12:17:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 12:17:38,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:38,724 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] [2022-01-10 12:17:38,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 12:17:38,724 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash 38509939, now seen corresponding path program 1 times [2022-01-10 12:17:38,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:38,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049043481] [2022-01-10 12:17:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:38,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:38,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:38,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049043481] [2022-01-10 12:17:38,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049043481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:38,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:38,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:38,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773619384] [2022-01-10 12:17:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:38,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:38,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:38,843 INFO L87 Difference]: Start difference. First operand 5740 states and 9177 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:41,660 INFO L93 Difference]: Finished difference Result 14398 states and 22337 transitions. [2022-01-10 12:17:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:17:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-10 12:17:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:41,672 INFO L225 Difference]: With dead ends: 14398 [2022-01-10 12:17:41,672 INFO L226 Difference]: Without dead ends: 12209 [2022-01-10 12:17:41,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:41,675 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 3676 mSDsluCounter, 3969 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3676 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:41,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3676 Valid, 4916 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12209 states. [2022-01-10 12:17:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12209 to 5804. [2022-01-10 12:17:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 1.5924521799069447) internal successors, (9241), 5803 states have internal predecessors, (9241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 9241 transitions. [2022-01-10 12:17:42,651 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 9241 transitions. Word has length 123 [2022-01-10 12:17:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:42,651 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 9241 transitions. [2022-01-10 12:17:42,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 9241 transitions. [2022-01-10 12:17:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 12:17:42,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:42,656 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] [2022-01-10 12:17:42,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 12:17:42,656 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2005472230, now seen corresponding path program 1 times [2022-01-10 12:17:42,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:42,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398873189] [2022-01-10 12:17:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:42,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:42,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:42,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398873189] [2022-01-10 12:17:42,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398873189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:42,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:42,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:42,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808740288] [2022-01-10 12:17:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:42,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:42,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:42,755 INFO L87 Difference]: Start difference. First operand 5804 states and 9241 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2022-01-10 12:17:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:48,303 INFO L93 Difference]: Finished difference Result 30057 states and 47419 transitions. [2022-01-10 12:17:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:17:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 [2022-01-10 12:17:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:48,338 INFO L225 Difference]: With dead ends: 30057 [2022-01-10 12:17:48,338 INFO L226 Difference]: Without dead ends: 28476 [2022-01-10 12:17:48,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:17:48,345 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 3744 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 4340 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:48,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 4340 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28476 states. [2022-01-10 12:17:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28476 to 9289. [2022-01-10 12:17:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9289 states, 9288 states have (on average 1.6116494401378123) internal successors, (14969), 9288 states have internal predecessors, (14969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 14969 transitions. [2022-01-10 12:17:49,816 INFO L78 Accepts]: Start accepts. Automaton has 9289 states and 14969 transitions. Word has length 124 [2022-01-10 12:17:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:49,816 INFO L470 AbstractCegarLoop]: Abstraction has 9289 states and 14969 transitions. [2022-01-10 12:17:49,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2022-01-10 12:17:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9289 states and 14969 transitions. [2022-01-10 12:17:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 12:17:49,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:49,824 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] [2022-01-10 12:17:49,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 12:17:49,824 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2004478140, now seen corresponding path program 1 times [2022-01-10 12:17:49,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:49,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397137462] [2022-01-10 12:17:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:49,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:49,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:49,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397137462] [2022-01-10 12:17:49,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397137462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:49,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:49,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:17:49,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018418566] [2022-01-10 12:17:49,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:49,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:49,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:49,921 INFO L87 Difference]: Start difference. First operand 9289 states and 14969 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2022-01-10 12:17:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:51,358 INFO L93 Difference]: Finished difference Result 14354 states and 22601 transitions. [2022-01-10 12:17:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:17:51,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 [2022-01-10 12:17:51,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:51,369 INFO L225 Difference]: With dead ends: 14354 [2022-01-10 12:17:51,369 INFO L226 Difference]: Without dead ends: 9327 [2022-01-10 12:17:51,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2022-01-10 12:17:51,374 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 1899 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:51,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1899 Valid, 4290 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9327 states. [2022-01-10 12:17:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9327 to 8861. [2022-01-10 12:17:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8861 states, 8860 states have (on average 1.6064334085778782) internal successors, (14233), 8860 states have internal predecessors, (14233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8861 states to 8861 states and 14233 transitions. [2022-01-10 12:17:52,650 INFO L78 Accepts]: Start accepts. Automaton has 8861 states and 14233 transitions. Word has length 124 [2022-01-10 12:17:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:52,651 INFO L470 AbstractCegarLoop]: Abstraction has 8861 states and 14233 transitions. [2022-01-10 12:17:52,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2022-01-10 12:17:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 8861 states and 14233 transitions. [2022-01-10 12:17:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 12:17:52,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:52,659 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] [2022-01-10 12:17:52,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 12:17:52,659 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1039558321, now seen corresponding path program 1 times [2022-01-10 12:17:52,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:52,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856648263] [2022-01-10 12:17:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:52,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:52,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:52,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856648263] [2022-01-10 12:17:52,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856648263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:52,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:52,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:52,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107045565] [2022-01-10 12:17:52,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:52,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:52,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:52,749 INFO L87 Difference]: Start difference. First operand 8861 states and 14233 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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) [2022-01-10 12:17:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:54,671 INFO L93 Difference]: Finished difference Result 12665 states and 20033 transitions. [2022-01-10 12:17:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:17:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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 [2022-01-10 12:17:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:54,683 INFO L225 Difference]: With dead ends: 12665 [2022-01-10 12:17:54,683 INFO L226 Difference]: Without dead ends: 10476 [2022-01-10 12:17:54,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:17:54,686 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 2864 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:54,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2864 Valid, 3537 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:54,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10476 states. [2022-01-10 12:17:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10476 to 8829. [2022-01-10 12:17:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8829 states, 8828 states have (on average 1.6050067965564114) internal successors, (14169), 8828 states have internal predecessors, (14169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8829 states to 8829 states and 14169 transitions. [2022-01-10 12:17:56,047 INFO L78 Accepts]: Start accepts. Automaton has 8829 states and 14169 transitions. Word has length 125 [2022-01-10 12:17:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:56,047 INFO L470 AbstractCegarLoop]: Abstraction has 8829 states and 14169 transitions. [2022-01-10 12:17:56,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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) [2022-01-10 12:17:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8829 states and 14169 transitions. [2022-01-10 12:17:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 12:17:56,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:56,055 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] [2022-01-10 12:17:56,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 12:17:56,055 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash -938646354, now seen corresponding path program 1 times [2022-01-10 12:17:56,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:56,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7699502] [2022-01-10 12:17:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:56,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:56,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:56,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7699502] [2022-01-10 12:17:56,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7699502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:56,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:56,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:56,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73748776] [2022-01-10 12:17:56,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:56,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:56,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:56,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:56,140 INFO L87 Difference]: Start difference. First operand 8829 states and 14169 transitions. Second operand has 5 states, 5 states have (on average 25.0) 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) [2022-01-10 12:17:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:58,759 INFO L93 Difference]: Finished difference Result 18369 states and 29331 transitions. [2022-01-10 12:17:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:58,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) 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 [2022-01-10 12:17:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:58,778 INFO L225 Difference]: With dead ends: 18369 [2022-01-10 12:17:58,779 INFO L226 Difference]: Without dead ends: 17572 [2022-01-10 12:17:58,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:58,781 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 673 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:58,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 2957 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17572 states. [2022-01-10 12:18:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17572 to 16743. [2022-01-10 12:18:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16743 states, 16742 states have (on average 1.6158762393979214) internal successors, (27053), 16742 states have internal predecessors, (27053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16743 states to 16743 states and 27053 transitions. [2022-01-10 12:18:01,149 INFO L78 Accepts]: Start accepts. Automaton has 16743 states and 27053 transitions. Word has length 125 [2022-01-10 12:18:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:01,149 INFO L470 AbstractCegarLoop]: Abstraction has 16743 states and 27053 transitions. [2022-01-10 12:18:01,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) 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) [2022-01-10 12:18:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16743 states and 27053 transitions. [2022-01-10 12:18:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 12:18:01,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:01,171 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] [2022-01-10 12:18:01,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 12:18:01,171 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:18:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash 102948823, now seen corresponding path program 1 times [2022-01-10 12:18:01,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:01,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591928343] [2022-01-10 12:18:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:01,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:01,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:01,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591928343] [2022-01-10 12:18:01,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591928343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:01,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:01,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:01,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142372722] [2022-01-10 12:18:01,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:01,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:01,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:01,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:01,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:01,267 INFO L87 Difference]: Start difference. First operand 16743 states and 27053 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)