/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:45:22,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:45:22,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:45:22,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:45:22,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:45:22,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:45:22,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:45:22,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:45:22,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:45:22,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:45:22,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:45:22,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:45:22,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:45:22,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:45:22,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:45:22,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:45:22,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:45:22,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:45:22,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:45:22,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:45:22,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:45:22,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:45:22,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:45:22,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:45:22,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:45:22,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:45:22,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:45:22,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:45:22,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:45:22,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:45:22,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:45:22,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:45:22,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:45:22,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:45:22,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:45:22,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:45:22,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:45:22,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:45:22,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:45:22,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:45:22,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:45:22,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:45:22,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:45:22,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:45:22,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:45:22,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:45:22,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:45:22,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:45:22,171 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:45:22,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:45:22,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:45:22,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:45:22,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:45:22,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:45:22,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:45:22,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:45:22,173 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:45:22,173 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:45:22,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:45:22,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:45:22,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:45:22,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:45:22,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:45:22,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:45:22,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:45:22,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:45:22,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:45:22,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:45:22,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:45:22,174 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:45:22,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:45:22,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:45:22,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:45:22,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:45:22,176 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:45:22,176 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:45:22,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:45:22,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:45:22,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:45:22,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:45:22,460 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:45:22,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2022-01-11 05:45:22,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f56fec2/fde1e8142b9f4bc480fb974f08a37b31/FLAG52df53b22 [2022-01-11 05:45:23,014 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:45:23,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2022-01-11 05:45:23,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f56fec2/fde1e8142b9f4bc480fb974f08a37b31/FLAG52df53b22 [2022-01-11 05:45:23,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f56fec2/fde1e8142b9f4bc480fb974f08a37b31 [2022-01-11 05:45:23,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:45:23,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:45:23,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:45:23,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:45:23,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:45:23,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:45:23" (1/1) ... [2022-01-11 05:45:23,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557e99b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:23, skipping insertion in model container [2022-01-11 05:45:23,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:45:23" (1/1) ... [2022-01-11 05:45:23,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:45:23,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:45:23,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c[52000,52013] [2022-01-11 05:45:23,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:45:23,883 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:45:23,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:45:23,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c[52000,52013] [2022-01-11 05:45:24,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:45:24,021 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:45:24,114 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c[52000,52013] [2022-01-11 05:45:24,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:45:24,163 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:45:24,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24 WrapperNode [2022-01-11 05:45:24,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:45:24,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:45:24,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:45:24,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:45:24,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,293 INFO L137 Inliner]: procedures = 125, calls = 193, calls flagged for inlining = 105, calls inlined = 119, statements flattened = 1839 [2022-01-11 05:45:24,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:45:24,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:45:24,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:45:24,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:45:24,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:45:24,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:45:24,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:45:24,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:45:24,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (1/1) ... [2022-01-11 05:45:24,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:45:24,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:45:24,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:45:24,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:45:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:45:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:45:24,678 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:45:24,679 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:45:25,657 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:45:25,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:45:25,667 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:45:25,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:45:25 BoogieIcfgContainer [2022-01-11 05:45:25,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:45:25,670 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:45:25,670 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:45:25,671 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:45:25,673 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:45:25" (1/1) ... [2022-01-11 05:45:25,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:45:25 BasicIcfg [2022-01-11 05:45:25,977 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:45:25,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:45:25,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:45:25,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:45:25,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:45:23" (1/4) ... [2022-01-11 05:45:25,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7352d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:45:25, skipping insertion in model container [2022-01-11 05:45:25,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:45:24" (2/4) ... [2022-01-11 05:45:25,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7352d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:45:25, skipping insertion in model container [2022-01-11 05:45:25,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:45:25" (3/4) ... [2022-01-11 05:45:25,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7352d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:45:25, skipping insertion in model container [2022-01-11 05:45:25,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:45:25" (4/4) ... [2022-01-11 05:45:25,984 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.cTransformedIcfg [2022-01-11 05:45:25,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:45:25,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:45:26,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:45:26,038 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:45:26,038 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:45:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 433 states, 430 states have (on average 1.7046511627906977) internal successors, (733), 432 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 05:45:26,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:26,083 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] [2022-01-11 05:45:26,083 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash -23196678, now seen corresponding path program 1 times [2022-01-11 05:45:26,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:26,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012642314] [2022-01-11 05:45:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:26,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:26,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:26,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012642314] [2022-01-11 05:45:26,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012642314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:26,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:26,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:45:26,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386214197] [2022-01-11 05:45:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:26,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:45:26,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:45:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:45:26,508 INFO L87 Difference]: Start difference. First operand has 433 states, 430 states have (on average 1.7046511627906977) internal successors, (733), 432 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:26,556 INFO L93 Difference]: Finished difference Result 610 states and 1014 transitions. [2022-01-11 05:45:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:45:26,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-11 05:45:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:26,569 INFO L225 Difference]: With dead ends: 610 [2022-01-11 05:45:26,570 INFO L226 Difference]: Without dead ends: 395 [2022-01-11 05:45:26,573 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 [2022-01-11 05:45:26,575 INFO L933 BasicCegarLoop]: 727 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, 727 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 [2022-01-11 05:45:26,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-11 05:45:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-01-11 05:45:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 393 states have (on average 1.7099236641221374) internal successors, (672), 394 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 672 transitions. [2022-01-11 05:45:26,658 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 672 transitions. Word has length 57 [2022-01-11 05:45:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:26,658 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 672 transitions. [2022-01-11 05:45:26,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 672 transitions. [2022-01-11 05:45:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 05:45:26,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:26,665 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] [2022-01-11 05:45:26,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:45:26,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1398236242, now seen corresponding path program 1 times [2022-01-11 05:45:26,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:26,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127383013] [2022-01-11 05:45:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:26,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:26,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:26,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127383013] [2022-01-11 05:45:26,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127383013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:26,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:26,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:45:26,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868328592] [2022-01-11 05:45:26,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:26,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:45:26,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:45:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:26,938 INFO L87 Difference]: Start difference. First operand 395 states and 672 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) [2022-01-11 05:45:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:27,040 INFO L93 Difference]: Finished difference Result 771 states and 1316 transitions. [2022-01-11 05:45:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:45:27,041 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 [2022-01-11 05:45:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:27,046 INFO L225 Difference]: With dead ends: 771 [2022-01-11 05:45:27,047 INFO L226 Difference]: Without dead ends: 395 [2022-01-11 05:45:27,051 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 [2022-01-11 05:45:27,052 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 647 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:27,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 667 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-11 05:45:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-01-11 05:45:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 393 states have (on average 1.7048346055979644) internal successors, (670), 394 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 670 transitions. [2022-01-11 05:45:27,077 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 670 transitions. Word has length 58 [2022-01-11 05:45:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:27,078 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 670 transitions. [2022-01-11 05:45:27,080 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) [2022-01-11 05:45:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 670 transitions. [2022-01-11 05:45:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 05:45:27,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:27,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:27,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:45:27,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:27,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1311910930, now seen corresponding path program 1 times [2022-01-11 05:45:27,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:27,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009598435] [2022-01-11 05:45:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:27,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:27,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:27,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009598435] [2022-01-11 05:45:27,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009598435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:27,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:27,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:45:27,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800614601] [2022-01-11 05:45:27,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:27,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:27,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:27,257 INFO L87 Difference]: Start difference. First operand 395 states and 670 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:27,486 INFO L93 Difference]: Finished difference Result 1843 states and 3146 transitions. [2022-01-11 05:45:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:45:27,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 05:45:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:27,495 INFO L225 Difference]: With dead ends: 1843 [2022-01-11 05:45:27,495 INFO L226 Difference]: Without dead ends: 1472 [2022-01-11 05:45:27,498 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 [2022-01-11 05:45:27,502 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 3133 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3133 SdHoareTripleChecker+Valid, 3145 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 [2022-01-11 05:45:27,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3133 Valid, 3145 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:27,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2022-01-11 05:45:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 395. [2022-01-11 05:45:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 393 states have (on average 1.702290076335878) internal successors, (669), 394 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 669 transitions. [2022-01-11 05:45:27,535 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 669 transitions. Word has length 60 [2022-01-11 05:45:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:27,535 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 669 transitions. [2022-01-11 05:45:27,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 669 transitions. [2022-01-11 05:45:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:45:27,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:27,537 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] [2022-01-11 05:45:27,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:45:27,537 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1613801940, now seen corresponding path program 1 times [2022-01-11 05:45:27,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982333826] [2022-01-11 05:45:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:27,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:27,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:27,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982333826] [2022-01-11 05:45:27,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982333826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:27,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:27,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:45:27,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400304379] [2022-01-11 05:45:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:27,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:45:27,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:45:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:27,656 INFO L87 Difference]: Start difference. First operand 395 states and 669 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:27,699 INFO L93 Difference]: Finished difference Result 775 states and 1316 transitions. [2022-01-11 05:45:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:45:27,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-11 05:45:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:27,702 INFO L225 Difference]: With dead ends: 775 [2022-01-11 05:45:27,702 INFO L226 Difference]: Without dead ends: 409 [2022-01-11 05:45:27,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:27,708 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 648 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 705 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 [2022-01-11 05:45:27,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 705 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-11 05:45:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 395. [2022-01-11 05:45:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 393 states have (on average 1.6997455470737914) internal successors, (668), 394 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 668 transitions. [2022-01-11 05:45:27,733 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 668 transitions. Word has length 61 [2022-01-11 05:45:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:27,734 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 668 transitions. [2022-01-11 05:45:27,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 668 transitions. [2022-01-11 05:45:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:45:27,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:27,736 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] [2022-01-11 05:45:27,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:45:27,737 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:27,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1459082031, now seen corresponding path program 1 times [2022-01-11 05:45:27,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:27,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128167242] [2022-01-11 05:45:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:27,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:27,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128167242] [2022-01-11 05:45:27,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128167242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:27,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:27,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:45:27,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866315903] [2022-01-11 05:45:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:27,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:27,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:27,876 INFO L87 Difference]: Start difference. First operand 395 states and 668 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) [2022-01-11 05:45:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:28,035 INFO L93 Difference]: Finished difference Result 1119 states and 1904 transitions. [2022-01-11 05:45:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:45:28,036 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 [2022-01-11 05:45:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:28,039 INFO L225 Difference]: With dead ends: 1119 [2022-01-11 05:45:28,040 INFO L226 Difference]: Without dead ends: 758 [2022-01-11 05:45:28,041 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 [2022-01-11 05:45:28,041 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 3056 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3056 SdHoareTripleChecker+Valid, 1368 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 [2022-01-11 05:45:28,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3056 Valid, 1368 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-01-11 05:45:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 395. [2022-01-11 05:45:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 393 states have (on average 1.6946564885496183) internal successors, (666), 394 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 666 transitions. [2022-01-11 05:45:28,075 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 666 transitions. Word has length 62 [2022-01-11 05:45:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:28,076 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 666 transitions. [2022-01-11 05:45:28,076 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) [2022-01-11 05:45:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 666 transitions. [2022-01-11 05:45:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:45:28,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:28,077 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] [2022-01-11 05:45:28,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:45:28,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1823982676, now seen corresponding path program 1 times [2022-01-11 05:45:28,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:28,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146243481] [2022-01-11 05:45:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:28,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:28,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:28,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146243481] [2022-01-11 05:45:28,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146243481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:28,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:28,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:45:28,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354359655] [2022-01-11 05:45:28,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:28,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:45:28,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:28,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:45:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:45:28,248 INFO L87 Difference]: Start difference. First operand 395 states and 666 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) [2022-01-11 05:45:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:28,728 INFO L93 Difference]: Finished difference Result 1272 states and 2089 transitions. [2022-01-11 05:45:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:45:28,729 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 [2022-01-11 05:45:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:28,733 INFO L225 Difference]: With dead ends: 1272 [2022-01-11 05:45:28,733 INFO L226 Difference]: Without dead ends: 1151 [2022-01-11 05:45:28,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:45:28,736 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 4062 mSDsluCounter, 4720 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4062 SdHoareTripleChecker+Valid, 5544 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:28,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4062 Valid, 5544 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:45:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-01-11 05:45:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 708. [2022-01-11 05:45:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 706 states have (on average 1.7138810198300283) internal successors, (1210), 707 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1210 transitions. [2022-01-11 05:45:28,814 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1210 transitions. Word has length 64 [2022-01-11 05:45:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:28,816 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1210 transitions. [2022-01-11 05:45:28,816 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) [2022-01-11 05:45:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1210 transitions. [2022-01-11 05:45:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 05:45:28,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:28,818 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] [2022-01-11 05:45:28,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:45:28,818 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1258820749, now seen corresponding path program 1 times [2022-01-11 05:45:28,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:28,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121250128] [2022-01-11 05:45:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:28,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:28,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:28,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121250128] [2022-01-11 05:45:28,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121250128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:28,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:28,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:45:28,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262089216] [2022-01-11 05:45:28,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:28,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:45:28,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:28,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:45:28,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:45:28,969 INFO L87 Difference]: Start difference. First operand 708 states and 1210 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) 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) [2022-01-11 05:45:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:29,454 INFO L93 Difference]: Finished difference Result 2147 states and 3564 transitions. [2022-01-11 05:45:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:45:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) 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 [2022-01-11 05:45:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:29,463 INFO L225 Difference]: With dead ends: 2147 [2022-01-11 05:45:29,463 INFO L226 Difference]: Without dead ends: 1952 [2022-01-11 05:45:29,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:45:29,466 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 4051 mSDsluCounter, 4010 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 4694 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:29,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4051 Valid, 4694 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:45:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2022-01-11 05:45:29,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1337. [2022-01-11 05:45:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1335 states have (on average 1.7250936329588016) internal successors, (2303), 1336 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2303 transitions. [2022-01-11 05:45:29,574 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2303 transitions. Word has length 65 [2022-01-11 05:45:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:29,574 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 2303 transitions. [2022-01-11 05:45:29,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) 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) [2022-01-11 05:45:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2303 transitions. [2022-01-11 05:45:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 05:45:29,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:29,576 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] [2022-01-11 05:45:29,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:45:29,577 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:29,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash 998090258, now seen corresponding path program 1 times [2022-01-11 05:45:29,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:29,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385868221] [2022-01-11 05:45:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:29,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:29,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:29,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385868221] [2022-01-11 05:45:29,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385868221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:29,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:29,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:29,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100623778] [2022-01-11 05:45:29,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:29,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:29,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:29,699 INFO L87 Difference]: Start difference. First operand 1337 states and 2303 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:30,110 INFO L93 Difference]: Finished difference Result 2927 states and 4687 transitions. [2022-01-11 05:45:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:45:30,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 05:45:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:30,121 INFO L225 Difference]: With dead ends: 2927 [2022-01-11 05:45:30,121 INFO L226 Difference]: Without dead ends: 2665 [2022-01-11 05:45:30,122 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 [2022-01-11 05:45:30,123 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 1500 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:30,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1500 Valid, 2426 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-11 05:45:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1679. [2022-01-11 05:45:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1677 states have (on average 1.6839594514013119) internal successors, (2824), 1678 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2824 transitions. [2022-01-11 05:45:30,308 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2824 transitions. Word has length 65 [2022-01-11 05:45:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:30,308 INFO L470 AbstractCegarLoop]: Abstraction has 1679 states and 2824 transitions. [2022-01-11 05:45:30,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2824 transitions. [2022-01-11 05:45:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 05:45:30,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:30,310 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] [2022-01-11 05:45:30,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:45:30,311 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1518914940, now seen corresponding path program 1 times [2022-01-11 05:45:30,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:30,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401484855] [2022-01-11 05:45:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:30,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:30,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:30,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401484855] [2022-01-11 05:45:30,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401484855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:30,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:30,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 05:45:30,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494792085] [2022-01-11 05:45:30,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:30,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:45:30,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:45:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:45:30,421 INFO L87 Difference]: Start difference. First operand 1679 states and 2824 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-01-11 05:45:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:30,741 INFO L93 Difference]: Finished difference Result 2450 states and 3975 transitions. [2022-01-11 05:45:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:45:30,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 [2022-01-11 05:45:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:30,749 INFO L225 Difference]: With dead ends: 2450 [2022-01-11 05:45:30,749 INFO L226 Difference]: Without dead ends: 1928 [2022-01-11 05:45:30,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-11 05:45:30,755 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1116 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:30,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 3280 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:30,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2022-01-11 05:45:30,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1611. [2022-01-11 05:45:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1609 states have (on average 1.680546923555003) internal successors, (2704), 1610 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2704 transitions. [2022-01-11 05:45:30,930 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2704 transitions. Word has length 66 [2022-01-11 05:45:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:30,930 INFO L470 AbstractCegarLoop]: Abstraction has 1611 states and 2704 transitions. [2022-01-11 05:45:30,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-01-11 05:45:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2704 transitions. [2022-01-11 05:45:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:45:30,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:30,933 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] [2022-01-11 05:45:30,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:45:30,933 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1046514701, now seen corresponding path program 1 times [2022-01-11 05:45:30,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:30,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762853929] [2022-01-11 05:45:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:30,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:31,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:31,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762853929] [2022-01-11 05:45:31,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762853929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:31,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:31,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:31,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141370479] [2022-01-11 05:45:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:31,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:45:31,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:45:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:45:31,036 INFO L87 Difference]: Start difference. First operand 1611 states and 2704 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:31,352 INFO L93 Difference]: Finished difference Result 2863 states and 4534 transitions. [2022-01-11 05:45:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:45:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:45:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:31,361 INFO L225 Difference]: With dead ends: 2863 [2022-01-11 05:45:31,361 INFO L226 Difference]: Without dead ends: 2253 [2022-01-11 05:45:31,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:31,363 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 318 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:31,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2001 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2022-01-11 05:45:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 1623. [2022-01-11 05:45:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1621 states have (on average 1.67550894509562) internal successors, (2716), 1622 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2716 transitions. [2022-01-11 05:45:31,528 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2716 transitions. Word has length 69 [2022-01-11 05:45:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:31,528 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2716 transitions. [2022-01-11 05:45:31,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2716 transitions. [2022-01-11 05:45:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:45:31,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:31,531 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] [2022-01-11 05:45:31,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:45:31,531 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -308617422, now seen corresponding path program 1 times [2022-01-11 05:45:31,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:31,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636019133] [2022-01-11 05:45:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:31,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:31,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:31,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636019133] [2022-01-11 05:45:31,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636019133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:31,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:31,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:45:31,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528921011] [2022-01-11 05:45:31,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:31,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:45:31,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:31,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:45:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:45:31,646 INFO L87 Difference]: Start difference. First operand 1623 states and 2716 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:31,874 INFO L93 Difference]: Finished difference Result 2311 states and 3753 transitions. [2022-01-11 05:45:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:45:31,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:45:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:31,881 INFO L225 Difference]: With dead ends: 2311 [2022-01-11 05:45:31,881 INFO L226 Difference]: Without dead ends: 1665 [2022-01-11 05:45:31,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:45:31,883 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1245 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:31,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 2110 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-01-11 05:45:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1607. [2022-01-11 05:45:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1605 states have (on average 1.6672897196261682) internal successors, (2676), 1606 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2676 transitions. [2022-01-11 05:45:32,059 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2676 transitions. Word has length 69 [2022-01-11 05:45:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:32,059 INFO L470 AbstractCegarLoop]: Abstraction has 1607 states and 2676 transitions. [2022-01-11 05:45:32,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2676 transitions. [2022-01-11 05:45:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:45:32,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:32,062 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] [2022-01-11 05:45:32,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:45:32,063 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash 713084581, now seen corresponding path program 1 times [2022-01-11 05:45:32,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:32,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941388360] [2022-01-11 05:45:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:32,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:32,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:32,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941388360] [2022-01-11 05:45:32,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941388360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:32,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:32,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:45:32,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854288108] [2022-01-11 05:45:32,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:32,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:32,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:32,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:32,168 INFO L87 Difference]: Start difference. First operand 1607 states and 2676 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2022-01-11 05:45:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:32,735 INFO L93 Difference]: Finished difference Result 3741 states and 5847 transitions. [2022-01-11 05:45:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:45:32,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 [2022-01-11 05:45:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:32,748 INFO L225 Difference]: With dead ends: 3741 [2022-01-11 05:45:32,748 INFO L226 Difference]: Without dead ends: 3135 [2022-01-11 05:45:32,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:45:32,750 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 559 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:32,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 3316 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-01-11 05:45:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 1661. [2022-01-11 05:45:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.667269439421338) internal successors, (2766), 1660 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2766 transitions. [2022-01-11 05:45:32,922 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2766 transitions. Word has length 69 [2022-01-11 05:45:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:32,922 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 2766 transitions. [2022-01-11 05:45:32,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2022-01-11 05:45:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2766 transitions. [2022-01-11 05:45:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:45:32,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:32,937 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] [2022-01-11 05:45:32,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:45:32,938 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1406186278, now seen corresponding path program 1 times [2022-01-11 05:45:32,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:32,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088220232] [2022-01-11 05:45:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:32,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:33,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088220232] [2022-01-11 05:45:33,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088220232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:33,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:33,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:33,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476283571] [2022-01-11 05:45:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:33,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:33,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:33,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:33,058 INFO L87 Difference]: Start difference. First operand 1661 states and 2766 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:33,658 INFO L93 Difference]: Finished difference Result 5217 states and 8275 transitions. [2022-01-11 05:45:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:45:33,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:45:33,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:33,676 INFO L225 Difference]: With dead ends: 5217 [2022-01-11 05:45:33,676 INFO L226 Difference]: Without dead ends: 4573 [2022-01-11 05:45:33,678 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 [2022-01-11 05:45:33,678 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 1454 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:33,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 2791 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2022-01-11 05:45:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 3177. [2022-01-11 05:45:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 3175 states have (on average 1.6733858267716535) internal successors, (5313), 3176 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5313 transitions. [2022-01-11 05:45:34,009 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5313 transitions. Word has length 69 [2022-01-11 05:45:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:34,009 INFO L470 AbstractCegarLoop]: Abstraction has 3177 states and 5313 transitions. [2022-01-11 05:45:34,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5313 transitions. [2022-01-11 05:45:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 05:45:34,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:34,015 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] [2022-01-11 05:45:34,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:45:34,015 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:34,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:34,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1320439043, now seen corresponding path program 1 times [2022-01-11 05:45:34,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:34,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255630362] [2022-01-11 05:45:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:34,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:34,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:34,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255630362] [2022-01-11 05:45:34,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255630362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:34,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:34,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:34,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462574715] [2022-01-11 05:45:34,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:34,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:45:34,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:45:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:34,137 INFO L87 Difference]: Start difference. First operand 3177 states and 5313 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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) [2022-01-11 05:45:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:34,940 INFO L93 Difference]: Finished difference Result 5171 states and 8261 transitions. [2022-01-11 05:45:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:45:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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 [2022-01-11 05:45:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:34,966 INFO L225 Difference]: With dead ends: 5171 [2022-01-11 05:45:34,967 INFO L226 Difference]: Without dead ends: 4509 [2022-01-11 05:45:34,968 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 [2022-01-11 05:45:34,969 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 1221 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:34,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 3009 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2022-01-11 05:45:35,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 3351. [2022-01-11 05:45:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 3349 states have (on average 1.6598984771573604) internal successors, (5559), 3350 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 5559 transitions. [2022-01-11 05:45:35,328 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 5559 transitions. Word has length 70 [2022-01-11 05:45:35,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:35,328 INFO L470 AbstractCegarLoop]: Abstraction has 3351 states and 5559 transitions. [2022-01-11 05:45:35,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 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) [2022-01-11 05:45:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 5559 transitions. [2022-01-11 05:45:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 05:45:35,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:35,336 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:35,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:45:35,336 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:35,338 INFO L85 PathProgramCache]: Analyzing trace with hash -241818648, now seen corresponding path program 1 times [2022-01-11 05:45:35,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:35,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357855143] [2022-01-11 05:45:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:35,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:35,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357855143] [2022-01-11 05:45:35,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357855143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:35,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:35,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:45:35,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217262137] [2022-01-11 05:45:35,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:35,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:45:35,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:45:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:35,419 INFO L87 Difference]: Start difference. First operand 3351 states and 5559 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:36,040 INFO L93 Difference]: Finished difference Result 9563 states and 15811 transitions. [2022-01-11 05:45:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:45:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-11 05:45:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:36,055 INFO L225 Difference]: With dead ends: 9563 [2022-01-11 05:45:36,055 INFO L226 Difference]: Without dead ends: 6249 [2022-01-11 05:45:36,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:36,061 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 600 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:36,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 1208 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2022-01-11 05:45:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 4671. [2022-01-11 05:45:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 4669 states have (on average 1.6960805311629898) internal successors, (7919), 4670 states have internal predecessors, (7919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 7919 transitions. [2022-01-11 05:45:36,457 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 7919 transitions. Word has length 87 [2022-01-11 05:45:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:36,457 INFO L470 AbstractCegarLoop]: Abstraction has 4671 states and 7919 transitions. [2022-01-11 05:45:36,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 7919 transitions. [2022-01-11 05:45:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 05:45:36,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:36,467 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:36,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:45:36,467 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1809010027, now seen corresponding path program 1 times [2022-01-11 05:45:36,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:36,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033306409] [2022-01-11 05:45:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:36,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:36,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:36,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033306409] [2022-01-11 05:45:36,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033306409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:36,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:36,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:45:36,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117715059] [2022-01-11 05:45:36,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:36,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:45:36,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:45:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:36,535 INFO L87 Difference]: Start difference. First operand 4671 states and 7919 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:37,269 INFO L93 Difference]: Finished difference Result 13923 states and 23627 transitions. [2022-01-11 05:45:37,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:45:37,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 05:45:37,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:37,290 INFO L225 Difference]: With dead ends: 13923 [2022-01-11 05:45:37,291 INFO L226 Difference]: Without dead ends: 9289 [2022-01-11 05:45:37,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:37,299 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 598 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:37,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 1302 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9289 states. [2022-01-11 05:45:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9289 to 7711. [2022-01-11 05:45:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7711 states, 7709 states have (on average 1.7339473342846023) internal successors, (13367), 7710 states have internal predecessors, (13367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 13367 transitions. [2022-01-11 05:45:37,773 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 13367 transitions. Word has length 88 [2022-01-11 05:45:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:37,774 INFO L470 AbstractCegarLoop]: Abstraction has 7711 states and 13367 transitions. [2022-01-11 05:45:37,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 13367 transitions. [2022-01-11 05:45:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-11 05:45:37,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:37,790 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:37,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:45:37,790 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash 561888513, now seen corresponding path program 1 times [2022-01-11 05:45:37,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:37,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570707798] [2022-01-11 05:45:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:37,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:37,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570707798] [2022-01-11 05:45:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570707798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:37,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:37,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:45:37,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799884330] [2022-01-11 05:45:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:37,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:45:37,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:37,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:45:37,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:37,852 INFO L87 Difference]: Start difference. First operand 7711 states and 13367 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:38,747 INFO L93 Difference]: Finished difference Result 22867 states and 39683 transitions. [2022-01-11 05:45:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:45:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-11 05:45:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:38,784 INFO L225 Difference]: With dead ends: 22867 [2022-01-11 05:45:38,784 INFO L226 Difference]: Without dead ends: 15193 [2022-01-11 05:45:38,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:45:38,796 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 596 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:38,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 1294 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:45:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15193 states. [2022-01-11 05:45:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15193 to 13615. [2022-01-11 05:45:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13615 states, 13613 states have (on average 1.76000881510321) internal successors, (23959), 13614 states have internal predecessors, (23959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 23959 transitions. [2022-01-11 05:45:39,613 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 23959 transitions. Word has length 89 [2022-01-11 05:45:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:39,613 INFO L470 AbstractCegarLoop]: Abstraction has 13615 states and 23959 transitions. [2022-01-11 05:45:39,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 23959 transitions. [2022-01-11 05:45:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 05:45:39,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:39,634 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:39,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:45:39,634 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:39,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1791173173, now seen corresponding path program 1 times [2022-01-11 05:45:39,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:39,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405006050] [2022-01-11 05:45:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:39,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:39,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:39,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405006050] [2022-01-11 05:45:39,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405006050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:39,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:39,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:45:39,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42694558] [2022-01-11 05:45:39,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:39,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:45:39,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:45:39,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:45:39,866 INFO L87 Difference]: Start difference. First operand 13615 states and 23959 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:45,535 INFO L93 Difference]: Finished difference Result 43340 states and 71656 transitions. [2022-01-11 05:45:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-11 05:45:45,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-11 05:45:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:45,647 INFO L225 Difference]: With dead ends: 43340 [2022-01-11 05:45:45,648 INFO L226 Difference]: Without dead ends: 43183 [2022-01-11 05:45:45,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2048 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1160, Invalid=4242, Unknown=0, NotChecked=0, Total=5402 [2022-01-11 05:45:45,667 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 9467 mSDsluCounter, 10700 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9467 SdHoareTripleChecker+Valid, 12008 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:45,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9467 Valid, 12008 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 05:45:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43183 states. [2022-01-11 05:45:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43183 to 20800. [2022-01-11 05:45:47,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20800 states, 20798 states have (on average 1.7559380709683623) internal successors, (36520), 20799 states have internal predecessors, (36520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20800 states to 20800 states and 36520 transitions. [2022-01-11 05:45:47,261 INFO L78 Accepts]: Start accepts. Automaton has 20800 states and 36520 transitions. Word has length 90 [2022-01-11 05:45:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:47,261 INFO L470 AbstractCegarLoop]: Abstraction has 20800 states and 36520 transitions. [2022-01-11 05:45:47,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 20800 states and 36520 transitions. [2022-01-11 05:45:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 05:45:47,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:47,294 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:47,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:45:47,295 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:47,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1903640209, now seen corresponding path program 1 times [2022-01-11 05:45:47,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:47,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089579479] [2022-01-11 05:45:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:47,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:45:47,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:47,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089579479] [2022-01-11 05:45:47,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089579479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:47,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:47,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:45:47,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082571374] [2022-01-11 05:45:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:47,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:45:47,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:45:47,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:45:47,411 INFO L87 Difference]: Start difference. First operand 20800 states and 36520 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:50,038 INFO L93 Difference]: Finished difference Result 58342 states and 102070 transitions. [2022-01-11 05:45:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:45:50,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-11 05:45:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:50,123 INFO L225 Difference]: With dead ends: 58342 [2022-01-11 05:45:50,123 INFO L226 Difference]: Without dead ends: 37579 [2022-01-11 05:45:50,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:45:50,169 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 1177 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:50,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1749 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:45:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37579 states. [2022-01-11 05:45:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37579 to 20800. [2022-01-11 05:45:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20800 states, 20798 states have (on average 1.7513222425233195) internal successors, (36424), 20799 states have internal predecessors, (36424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20800 states to 20800 states and 36424 transitions. [2022-01-11 05:45:51,641 INFO L78 Accepts]: Start accepts. Automaton has 20800 states and 36424 transitions. Word has length 90 [2022-01-11 05:45:51,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:51,641 INFO L470 AbstractCegarLoop]: Abstraction has 20800 states and 36424 transitions. [2022-01-11 05:45:51,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 20800 states and 36424 transitions. [2022-01-11 05:45:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-11 05:45:51,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:51,672 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:51,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:45:51,672 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -305821204, now seen corresponding path program 1 times [2022-01-11 05:45:51,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:51,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598425000] [2022-01-11 05:45:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:51,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:45:51,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:51,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598425000] [2022-01-11 05:45:51,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598425000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:51,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:51,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 05:45:51,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510397483] [2022-01-11 05:45:51,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:51,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:45:51,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:51,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:45:51,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:45:51,805 INFO L87 Difference]: Start difference. First operand 20800 states and 36424 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:45:55,634 INFO L93 Difference]: Finished difference Result 31854 states and 52147 transitions. [2022-01-11 05:45:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-11 05:45:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-11 05:45:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:45:55,699 INFO L225 Difference]: With dead ends: 31854 [2022-01-11 05:45:55,700 INFO L226 Difference]: Without dead ends: 30747 [2022-01-11 05:45:55,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2022-01-11 05:45:55,715 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 1329 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 5182 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:45:55,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 5182 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:45:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2022-01-11 05:45:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 22927. [2022-01-11 05:45:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22927 states, 22925 states have (on average 1.7278953107960742) internal successors, (39612), 22926 states have internal predecessors, (39612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22927 states to 22927 states and 39612 transitions. [2022-01-11 05:45:57,363 INFO L78 Accepts]: Start accepts. Automaton has 22927 states and 39612 transitions. Word has length 91 [2022-01-11 05:45:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:45:57,363 INFO L470 AbstractCegarLoop]: Abstraction has 22927 states and 39612 transitions. [2022-01-11 05:45:57,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:45:57,363 INFO L276 IsEmpty]: Start isEmpty. Operand 22927 states and 39612 transitions. [2022-01-11 05:45:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-11 05:45:57,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:45:57,385 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:45:57,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:45:57,386 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:45:57,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:45:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash -889574802, now seen corresponding path program 1 times [2022-01-11 05:45:57,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:45:57,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642605185] [2022-01-11 05:45:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:45:57,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:45:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:45:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:45:57,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:45:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642605185] [2022-01-11 05:45:57,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642605185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:45:57,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:45:57,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 05:45:57,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005955514] [2022-01-11 05:45:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:45:57,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:45:57,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:45:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:45:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:45:57,538 INFO L87 Difference]: Start difference. First operand 22927 states and 39612 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:46:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:46:07,474 INFO L93 Difference]: Finished difference Result 103584 states and 175555 transitions. [2022-01-11 05:46:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 05:46:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-11 05:46:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:46:07,700 INFO L225 Difference]: With dead ends: 103584 [2022-01-11 05:46:07,701 INFO L226 Difference]: Without dead ends: 102190 [2022-01-11 05:46:07,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:46:07,731 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 3233 mSDsluCounter, 3966 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3233 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:46:07,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3233 Valid, 4939 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:46:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102190 states. [2022-01-11 05:46:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102190 to 46018. [2022-01-11 05:46:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46018 states, 46016 states have (on average 1.7268124130737135) internal successors, (79461), 46017 states have internal predecessors, (79461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:46:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46018 states to 46018 states and 79461 transitions. [2022-01-11 05:46:11,897 INFO L78 Accepts]: Start accepts. Automaton has 46018 states and 79461 transitions. Word has length 92 [2022-01-11 05:46:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:46:11,897 INFO L470 AbstractCegarLoop]: Abstraction has 46018 states and 79461 transitions. [2022-01-11 05:46:11,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:46:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 46018 states and 79461 transitions. [2022-01-11 05:46:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-11 05:46:11,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:46:11,947 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:46:11,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:46:11,947 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:46:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:46:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -889545011, now seen corresponding path program 1 times [2022-01-11 05:46:11,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:46:11,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746410807] [2022-01-11 05:46:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:46:11,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:46:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:46:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:46:12,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:46:12,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746410807] [2022-01-11 05:46:12,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746410807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:46:12,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488433010] [2022-01-11 05:46:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:46:12,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:46:12,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:46:12,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:46:12,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:46:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:46:12,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-11 05:46:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:46:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:46:13,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 05:46:13,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488433010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:46:13,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 05:46:13,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [16] total 26 [2022-01-11 05:46:13,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367664549] [2022-01-11 05:46:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:46:13,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-11 05:46:13,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:46:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-11 05:46:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-01-11 05:46:13,398 INFO L87 Difference]: Start difference. First operand 46018 states and 79461 transitions. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)