/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_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:52:05,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:52:05,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:52:05,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:52:05,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:52:05,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:52:05,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:52:05,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:52:05,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:52:05,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:52:05,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:52:05,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:52:05,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:52:05,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:52:05,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:52:05,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:52:05,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:52:05,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:52:05,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:52:05,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:52:05,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:52:05,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:52:05,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:52:05,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:52:05,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:52:05,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:52:05,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:52:05,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:52:05,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:52:05,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:52:05,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:52:05,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:52:05,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:52:05,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:52:05,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:52:05,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:52:05,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:52:05,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:52:05,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:52:05,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:52:05,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:52:05,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:52:05,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:52:05,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:52:05,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:52:05,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:52:05,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:52:05,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:52:05,891 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:52:05,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:52:05,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:52:05,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:52:05,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:52:05,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:52:05,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:52:05,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:52:05,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:52:05,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:52:05,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:52:05,896 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:52:05,896 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:52:06,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:52:06,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:52:06,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:52:06,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:52:06,114 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:52:06,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2022-01-10 23:52:06,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308779b50/d3e1b558fff44db3befb953dd2cacbf7/FLAGcea4fdb04 [2022-01-10 23:52:06,603 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:52:06,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2022-01-10 23:52:06,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308779b50/d3e1b558fff44db3befb953dd2cacbf7/FLAGcea4fdb04 [2022-01-10 23:52:07,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308779b50/d3e1b558fff44db3befb953dd2cacbf7 [2022-01-10 23:52:07,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:52:07,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:52:07,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:52:07,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:52:07,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:52:07,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40086446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07, skipping insertion in model container [2022-01-10 23:52:07,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:52:07,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:52:07,492 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_spec1_product22.cil.c[33239,33252] [2022-01-10 23:52:07,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:52:07,571 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:52:07,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:52:07,627 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_spec1_product22.cil.c[33239,33252] [2022-01-10 23:52:07,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:52:07,675 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:52:07,722 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_spec1_product22.cil.c[33239,33252] [2022-01-10 23:52:07,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:52:07,760 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:52:07,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07 WrapperNode [2022-01-10 23:52:07,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:52:07,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:52:07,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:52:07,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:52:07,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,866 INFO L137 Inliner]: procedures = 130, calls = 206, calls flagged for inlining = 118, calls inlined = 159, statements flattened = 2310 [2022-01-10 23:52:07,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:52:07,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:52:07,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:52:07,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:52:07,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:52:07,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:52:07,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:52:07,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:52:07,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:52:07,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:52:07,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:52:07,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:52:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:52:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:52:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:52:08,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:52:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:52:08,202 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:52:08,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:52:09,153 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:52:09,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:52:09,167 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:52:09,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:09 BoogieIcfgContainer [2022-01-10 23:52:09,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:52:09,170 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:52:09,170 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:52:09,171 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:52:09,173 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:09" (1/1) ... [2022-01-10 23:52:09,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:09 BasicIcfg [2022-01-10 23:52:09,467 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:52:09,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:52:09,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:52:09,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:52:09,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:52:07" (1/4) ... [2022-01-10 23:52:09,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4f1203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:09, skipping insertion in model container [2022-01-10 23:52:09,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:07" (2/4) ... [2022-01-10 23:52:09,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4f1203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:09, skipping insertion in model container [2022-01-10 23:52:09,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:09" (3/4) ... [2022-01-10 23:52:09,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4f1203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:52:09, skipping insertion in model container [2022-01-10 23:52:09,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:09" (4/4) ... [2022-01-10 23:52:09,473 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product22.cil.cTransformedIcfg [2022-01-10 23:52:09,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:52:09,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:52:09,523 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:52:09,527 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:52:09,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:52:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 523 states, 520 states have (on average 1.6788461538461539) internal successors, (873), 522 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 23:52:09,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:09,558 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] [2022-01-10 23:52:09,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1042424169, now seen corresponding path program 1 times [2022-01-10 23:52:09,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:09,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135766931] [2022-01-10 23:52:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:09,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:09,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:09,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135766931] [2022-01-10 23:52:09,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135766931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:09,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:09,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:52:09,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100330037] [2022-01-10 23:52:09,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:09,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:52:09,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:52:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:52:09,952 INFO L87 Difference]: Start difference. First operand has 523 states, 520 states have (on average 1.6788461538461539) internal successors, (873), 522 states have internal predecessors, (873), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:10,004 INFO L93 Difference]: Finished difference Result 780 states and 1278 transitions. [2022-01-10 23:52:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:52:10,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 23:52:10,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:10,029 INFO L225 Difference]: With dead ends: 780 [2022-01-10 23:52:10,029 INFO L226 Difference]: Without dead ends: 431 [2022-01-10 23:52:10,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:52:10,041 INFO L933 BasicCegarLoop]: 867 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, 867 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:10,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:10,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-01-10 23:52:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2022-01-10 23:52:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 429 states have (on average 1.6946386946386947) internal successors, (727), 430 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 727 transitions. [2022-01-10 23:52:10,109 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 727 transitions. Word has length 48 [2022-01-10 23:52:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:10,109 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 727 transitions. [2022-01-10 23:52:10,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 727 transitions. [2022-01-10 23:52:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 23:52:10,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:10,112 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] [2022-01-10 23:52:10,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:52:10,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1080501405, now seen corresponding path program 1 times [2022-01-10 23:52:10,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:10,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204312737] [2022-01-10 23:52:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:10,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:10,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:10,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204312737] [2022-01-10 23:52:10,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204312737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:10,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:10,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:52:10,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646271027] [2022-01-10 23:52:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:10,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:10,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:10,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:10,280 INFO L87 Difference]: Start difference. First operand 431 states and 727 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:10,302 INFO L93 Difference]: Finished difference Result 552 states and 915 transitions. [2022-01-10 23:52:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:10,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 23:52:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:10,305 INFO L225 Difference]: With dead ends: 552 [2022-01-10 23:52:10,305 INFO L226 Difference]: Without dead ends: 425 [2022-01-10 23:52:10,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:10,306 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 485 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:10,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 903 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-10 23:52:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-01-10 23:52:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.6933962264150944) internal successors, (718), 424 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 718 transitions. [2022-01-10 23:52:10,316 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 718 transitions. Word has length 49 [2022-01-10 23:52:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:10,317 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 718 transitions. [2022-01-10 23:52:10,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 718 transitions. [2022-01-10 23:52:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 23:52:10,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:10,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:10,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:52:10,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash -856217316, now seen corresponding path program 1 times [2022-01-10 23:52:10,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:10,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077458928] [2022-01-10 23:52:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:10,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:10,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077458928] [2022-01-10 23:52:10,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077458928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:10,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:10,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:10,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051860180] [2022-01-10 23:52:10,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:10,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:10,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:10,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:10,490 INFO L87 Difference]: Start difference. First operand 425 states and 718 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) [2022-01-10 23:52:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:10,553 INFO L93 Difference]: Finished difference Result 831 states and 1408 transitions. [2022-01-10 23:52:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:10,554 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 [2022-01-10 23:52:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:10,555 INFO L225 Difference]: With dead ends: 831 [2022-01-10 23:52:10,555 INFO L226 Difference]: Without dead ends: 425 [2022-01-10 23:52:10,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:10,557 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 693 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:10,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 711 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:10,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-10 23:52:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-01-10 23:52:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.6886792452830188) internal successors, (716), 424 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 716 transitions. [2022-01-10 23:52:10,587 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 716 transitions. Word has length 89 [2022-01-10 23:52:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:10,587 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 716 transitions. [2022-01-10 23:52:10,587 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) [2022-01-10 23:52:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 716 transitions. [2022-01-10 23:52:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 23:52:10,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:10,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:10,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:52:10,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:10,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash 484263708, now seen corresponding path program 1 times [2022-01-10 23:52:10,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:10,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703847309] [2022-01-10 23:52:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:10,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:10,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:10,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703847309] [2022-01-10 23:52:10,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703847309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:10,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:10,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:10,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576465386] [2022-01-10 23:52:10,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:10,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:10,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:10,681 INFO L87 Difference]: Start difference. First operand 425 states and 716 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2022-01-10 23:52:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:10,856 INFO L93 Difference]: Finished difference Result 1993 states and 3376 transitions. [2022-01-10 23:52:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:52:10,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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 91 [2022-01-10 23:52:10,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:10,864 INFO L225 Difference]: With dead ends: 1993 [2022-01-10 23:52:10,864 INFO L226 Difference]: Without dead ends: 1592 [2022-01-10 23:52:10,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:52:10,872 INFO L933 BasicCegarLoop]: 1355 mSDtfsCounter, 3363 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:10,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3363 Valid, 3375 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-01-10 23:52:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 425. [2022-01-10 23:52:10,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.6863207547169812) internal successors, (715), 424 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 715 transitions. [2022-01-10 23:52:10,900 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 715 transitions. Word has length 91 [2022-01-10 23:52:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:10,900 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 715 transitions. [2022-01-10 23:52:10,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2022-01-10 23:52:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 715 transitions. [2022-01-10 23:52:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 23:52:10,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:10,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:10,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:52:10,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash -272049016, now seen corresponding path program 1 times [2022-01-10 23:52:10,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:10,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396054089] [2022-01-10 23:52:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:10,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:11,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:11,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396054089] [2022-01-10 23:52:11,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396054089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:11,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:11,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:11,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726220299] [2022-01-10 23:52:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:11,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:11,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:11,044 INFO L87 Difference]: Start difference. First operand 425 states and 715 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2022-01-10 23:52:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:11,094 INFO L93 Difference]: Finished difference Result 835 states and 1408 transitions. [2022-01-10 23:52:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) Word has length 92 [2022-01-10 23:52:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:11,096 INFO L225 Difference]: With dead ends: 835 [2022-01-10 23:52:11,096 INFO L226 Difference]: Without dead ends: 439 [2022-01-10 23:52:11,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:11,099 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 694 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:11,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 751 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-01-10 23:52:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 425. [2022-01-10 23:52:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.6839622641509433) internal successors, (714), 424 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 714 transitions. [2022-01-10 23:52:11,126 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 714 transitions. Word has length 92 [2022-01-10 23:52:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:11,129 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 714 transitions. [2022-01-10 23:52:11,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2022-01-10 23:52:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 714 transitions. [2022-01-10 23:52:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 23:52:11,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:11,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:11,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:52:11,135 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:11,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1603249091, now seen corresponding path program 1 times [2022-01-10 23:52:11,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:11,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941565802] [2022-01-10 23:52:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:11,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:11,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:11,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941565802] [2022-01-10 23:52:11,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941565802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:11,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:11,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:11,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945923356] [2022-01-10 23:52:11,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:11,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:11,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:11,245 INFO L87 Difference]: Start difference. First operand 425 states and 714 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:11,374 INFO L93 Difference]: Finished difference Result 1209 states and 2042 transitions. [2022-01-10 23:52:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:52:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 23:52:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:11,378 INFO L225 Difference]: With dead ends: 1209 [2022-01-10 23:52:11,378 INFO L226 Difference]: Without dead ends: 818 [2022-01-10 23:52:11,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:11,380 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 3286 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3286 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:11,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3286 Valid, 1460 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-10 23:52:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 425. [2022-01-10 23:52:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.679245283018868) internal successors, (712), 424 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 712 transitions. [2022-01-10 23:52:11,409 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 712 transitions. Word has length 93 [2022-01-10 23:52:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:11,410 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 712 transitions. [2022-01-10 23:52:11,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 712 transitions. [2022-01-10 23:52:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:52:11,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:11,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:11,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:52:11,412 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -977038822, now seen corresponding path program 1 times [2022-01-10 23:52:11,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:11,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316119955] [2022-01-10 23:52:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:11,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:11,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:11,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316119955] [2022-01-10 23:52:11,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316119955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:11,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:11,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:52:11,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233645420] [2022-01-10 23:52:11,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:11,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:52:11,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:11,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:52:11,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:52:11,563 INFO L87 Difference]: Start difference. First operand 425 states and 712 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:11,788 INFO L93 Difference]: Finished difference Result 1901 states and 3174 transitions. [2022-01-10 23:52:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 23:52:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:11,795 INFO L225 Difference]: With dead ends: 1901 [2022-01-10 23:52:11,795 INFO L226 Difference]: Without dead ends: 1806 [2022-01-10 23:52:11,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:52:11,797 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 3408 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3408 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:11,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3408 Valid, 4359 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-01-10 23:52:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 722. [2022-01-10 23:52:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.7004160887656032) internal successors, (1226), 721 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1226 transitions. [2022-01-10 23:52:11,852 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1226 transitions. Word has length 95 [2022-01-10 23:52:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:11,853 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 1226 transitions. [2022-01-10 23:52:11,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1226 transitions. [2022-01-10 23:52:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 23:52:11,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:11,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:11,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:52:11,855 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1458566142, now seen corresponding path program 1 times [2022-01-10 23:52:11,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:11,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469949474] [2022-01-10 23:52:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:11,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:11,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469949474] [2022-01-10 23:52:11,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469949474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:11,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:11,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:52:11,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248183628] [2022-01-10 23:52:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:11,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:52:11,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:52:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:52:11,983 INFO L87 Difference]: Start difference. First operand 722 states and 1226 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:12,251 INFO L93 Difference]: Finished difference Result 2989 states and 5092 transitions. [2022-01-10 23:52:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 23:52:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:12,261 INFO L225 Difference]: With dead ends: 2989 [2022-01-10 23:52:12,262 INFO L226 Difference]: Without dead ends: 2894 [2022-01-10 23:52:12,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:52:12,263 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 3279 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 3801 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:12,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3279 Valid, 3801 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2022-01-10 23:52:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1293. [2022-01-10 23:52:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.721362229102167) internal successors, (2224), 1292 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2224 transitions. [2022-01-10 23:52:12,356 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2224 transitions. Word has length 96 [2022-01-10 23:52:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:12,356 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 2224 transitions. [2022-01-10 23:52:12,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2224 transitions. [2022-01-10 23:52:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 23:52:12,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:12,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:12,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:52:12,359 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2110154302, now seen corresponding path program 1 times [2022-01-10 23:52:12,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:12,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661276358] [2022-01-10 23:52:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:12,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:12,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:12,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661276358] [2022-01-10 23:52:12,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661276358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:12,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:12,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:12,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587692016] [2022-01-10 23:52:12,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:12,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:12,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:12,428 INFO L87 Difference]: Start difference. First operand 1293 states and 2224 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:12,624 INFO L93 Difference]: Finished difference Result 3691 states and 6412 transitions. [2022-01-10 23:52:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:52:12,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 23:52:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:12,633 INFO L225 Difference]: With dead ends: 3691 [2022-01-10 23:52:12,633 INFO L226 Difference]: Without dead ends: 2448 [2022-01-10 23:52:12,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:12,636 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 2073 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:12,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2073 Valid, 1992 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-10 23:52:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 1293. [2022-01-10 23:52:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.7198142414860682) internal successors, (2222), 1292 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2222 transitions. [2022-01-10 23:52:12,763 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2222 transitions. Word has length 96 [2022-01-10 23:52:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:12,763 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 2222 transitions. [2022-01-10 23:52:12,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2222 transitions. [2022-01-10 23:52:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 23:52:12,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:12,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:12,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:52:12,767 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1363179307, now seen corresponding path program 1 times [2022-01-10 23:52:12,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:12,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838733888] [2022-01-10 23:52:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:12,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:12,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:12,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838733888] [2022-01-10 23:52:12,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838733888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:12,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:12,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:12,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317492885] [2022-01-10 23:52:12,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:12,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:12,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:12,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:12,860 INFO L87 Difference]: Start difference. First operand 1293 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:13,082 INFO L93 Difference]: Finished difference Result 3689 states and 6404 transitions. [2022-01-10 23:52:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:52:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 23:52:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:13,089 INFO L225 Difference]: With dead ends: 3689 [2022-01-10 23:52:13,090 INFO L226 Difference]: Without dead ends: 2456 [2022-01-10 23:52:13,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:13,091 INFO L933 BasicCegarLoop]: 1332 mSDtfsCounter, 2058 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:13,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 2024 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2022-01-10 23:52:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 1293. [2022-01-10 23:52:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.7182662538699691) internal successors, (2220), 1292 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2220 transitions. [2022-01-10 23:52:13,188 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2220 transitions. Word has length 97 [2022-01-10 23:52:13,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:13,189 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 2220 transitions. [2022-01-10 23:52:13,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2220 transitions. [2022-01-10 23:52:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 23:52:13,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:13,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:13,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:52:13,193 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1243059434, now seen corresponding path program 1 times [2022-01-10 23:52:13,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:13,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219263578] [2022-01-10 23:52:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:13,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:13,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:13,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219263578] [2022-01-10 23:52:13,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219263578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:13,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:13,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:52:13,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674661603] [2022-01-10 23:52:13,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:13,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:52:13,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:13,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:52:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:52:13,349 INFO L87 Difference]: Start difference. First operand 1293 states and 2220 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:13,949 INFO L93 Difference]: Finished difference Result 3728 states and 6236 transitions. [2022-01-10 23:52:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:52:13,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 23:52:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:13,959 INFO L225 Difference]: With dead ends: 3728 [2022-01-10 23:52:13,959 INFO L226 Difference]: Without dead ends: 3509 [2022-01-10 23:52:13,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:52:13,961 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 5349 mSDsluCounter, 5151 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5349 SdHoareTripleChecker+Valid, 6035 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:13,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5349 Valid, 6035 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:52:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-01-10 23:52:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 2477. [2022-01-10 23:52:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 1.7338449111470113) internal successors, (4293), 2476 states have internal predecessors, (4293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4293 transitions. [2022-01-10 23:52:14,114 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4293 transitions. Word has length 97 [2022-01-10 23:52:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:14,114 INFO L470 AbstractCegarLoop]: Abstraction has 2477 states and 4293 transitions. [2022-01-10 23:52:14,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4293 transitions. [2022-01-10 23:52:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 23:52:14,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:14,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:14,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:52:14,119 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1366908261, now seen corresponding path program 1 times [2022-01-10 23:52:14,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:14,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454458221] [2022-01-10 23:52:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:14,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:14,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454458221] [2022-01-10 23:52:14,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454458221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:14,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:14,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:14,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2372781] [2022-01-10 23:52:14,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:14,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:52:14,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:14,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:52:14,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:52:14,184 INFO L87 Difference]: Start difference. First operand 2477 states and 4293 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:14,415 INFO L93 Difference]: Finished difference Result 2852 states and 4882 transitions. [2022-01-10 23:52:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:52:14,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 23:52:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:14,423 INFO L225 Difference]: With dead ends: 2852 [2022-01-10 23:52:14,424 INFO L226 Difference]: Without dead ends: 2577 [2022-01-10 23:52:14,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:14,425 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 608 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:14,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1734 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2022-01-10 23:52:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2477. [2022-01-10 23:52:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 1.7322294022617124) internal successors, (4289), 2476 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4289 transitions. [2022-01-10 23:52:14,612 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4289 transitions. Word has length 98 [2022-01-10 23:52:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:14,612 INFO L470 AbstractCegarLoop]: Abstraction has 2477 states and 4289 transitions. [2022-01-10 23:52:14,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4289 transitions. [2022-01-10 23:52:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 23:52:14,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:14,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:14,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:52:14,617 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:14,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1265996294, now seen corresponding path program 1 times [2022-01-10 23:52:14,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:14,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868172156] [2022-01-10 23:52:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:14,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:14,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868172156] [2022-01-10 23:52:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868172156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:14,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:14,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:14,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234109520] [2022-01-10 23:52:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:14,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:14,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:14,708 INFO L87 Difference]: Start difference. First operand 2477 states and 4289 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:15,090 INFO L93 Difference]: Finished difference Result 3963 states and 6609 transitions. [2022-01-10 23:52:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:15,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 23:52:15,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:15,102 INFO L225 Difference]: With dead ends: 3963 [2022-01-10 23:52:15,102 INFO L226 Difference]: Without dead ends: 3762 [2022-01-10 23:52:15,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:52:15,108 INFO L933 BasicCegarLoop]: 1077 mSDtfsCounter, 1710 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 3739 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:15,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 3739 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-01-10 23:52:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 2629. [2022-01-10 23:52:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2628 states have (on average 1.7264079147640792) internal successors, (4537), 2628 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 4537 transitions. [2022-01-10 23:52:15,294 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 4537 transitions. Word has length 98 [2022-01-10 23:52:15,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:15,294 INFO L470 AbstractCegarLoop]: Abstraction has 2629 states and 4537 transitions. [2022-01-10 23:52:15,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:15,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 4537 transitions. [2022-01-10 23:52:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 23:52:15,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:15,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:15,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:52:15,299 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1739117680, now seen corresponding path program 1 times [2022-01-10 23:52:15,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:15,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482104670] [2022-01-10 23:52:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:15,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:15,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482104670] [2022-01-10 23:52:15,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482104670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:15,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:15,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:52:15,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747144664] [2022-01-10 23:52:15,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:15,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:52:15,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:15,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:52:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:15,395 INFO L87 Difference]: Start difference. First operand 2629 states and 4537 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:15,914 INFO L93 Difference]: Finished difference Result 3888 states and 6481 transitions. [2022-01-10 23:52:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:52:15,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 23:52:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:15,933 INFO L225 Difference]: With dead ends: 3888 [2022-01-10 23:52:15,933 INFO L226 Difference]: Without dead ends: 3741 [2022-01-10 23:52:15,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-10 23:52:15,935 INFO L933 BasicCegarLoop]: 1292 mSDtfsCounter, 1985 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 6258 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:15,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1985 Valid, 6258 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2022-01-10 23:52:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 2679. [2022-01-10 23:52:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2678 states have (on average 1.722554144884242) internal successors, (4613), 2678 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 4613 transitions. [2022-01-10 23:52:16,129 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 4613 transitions. Word has length 98 [2022-01-10 23:52:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:16,129 INFO L470 AbstractCegarLoop]: Abstraction has 2679 states and 4613 transitions. [2022-01-10 23:52:16,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 4613 transitions. [2022-01-10 23:52:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 23:52:16,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:16,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:16,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:52:16,135 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:16,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:16,135 INFO L85 PathProgramCache]: Analyzing trace with hash -55493379, now seen corresponding path program 1 times [2022-01-10 23:52:16,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:16,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692199798] [2022-01-10 23:52:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:16,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:16,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:16,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692199798] [2022-01-10 23:52:16,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692199798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:16,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:16,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:16,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636789103] [2022-01-10 23:52:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:16,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:16,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:16,245 INFO L87 Difference]: Start difference. First operand 2679 states and 4613 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:16,740 INFO L93 Difference]: Finished difference Result 5661 states and 9479 transitions. [2022-01-10 23:52:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:52:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 23:52:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:16,749 INFO L225 Difference]: With dead ends: 5661 [2022-01-10 23:52:16,749 INFO L226 Difference]: Without dead ends: 5196 [2022-01-10 23:52:16,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:16,750 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 1696 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:16,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 2492 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:16,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2022-01-10 23:52:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4171. [2022-01-10 23:52:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4171 states, 4170 states have (on average 1.717745803357314) internal successors, (7163), 4170 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4171 states to 4171 states and 7163 transitions. [2022-01-10 23:52:17,039 INFO L78 Accepts]: Start accepts. Automaton has 4171 states and 7163 transitions. Word has length 99 [2022-01-10 23:52:17,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:17,039 INFO L470 AbstractCegarLoop]: Abstraction has 4171 states and 7163 transitions. [2022-01-10 23:52:17,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4171 states and 7163 transitions. [2022-01-10 23:52:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 23:52:17,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:17,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:17,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:52:17,046 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash 344496319, now seen corresponding path program 1 times [2022-01-10 23:52:17,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:17,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887898384] [2022-01-10 23:52:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:17,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:17,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:17,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887898384] [2022-01-10 23:52:17,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887898384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:17,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:17,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:52:17,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899298166] [2022-01-10 23:52:17,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:17,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:52:17,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:52:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:52:17,176 INFO L87 Difference]: Start difference. First operand 4171 states and 7163 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:18,334 INFO L93 Difference]: Finished difference Result 6661 states and 10878 transitions. [2022-01-10 23:52:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 23:52:18,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 23:52:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:18,345 INFO L225 Difference]: With dead ends: 6661 [2022-01-10 23:52:18,346 INFO L226 Difference]: Without dead ends: 6403 [2022-01-10 23:52:18,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=610, Unknown=0, NotChecked=0, Total=870 [2022-01-10 23:52:18,348 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 4864 mSDsluCounter, 5643 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4864 SdHoareTripleChecker+Valid, 6404 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:18,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4864 Valid, 6404 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2022-01-10 23:52:18,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 4279. [2022-01-10 23:52:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.7136512388966807) internal successors, (7331), 4278 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 7331 transitions. [2022-01-10 23:52:18,665 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 7331 transitions. Word has length 99 [2022-01-10 23:52:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:18,665 INFO L470 AbstractCegarLoop]: Abstraction has 4279 states and 7331 transitions. [2022-01-10 23:52:18,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 10 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 7331 transitions. [2022-01-10 23:52:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 23:52:18,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:18,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:18,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:52:18,673 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1312898426, now seen corresponding path program 1 times [2022-01-10 23:52:18,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:18,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087881405] [2022-01-10 23:52:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:18,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:18,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087881405] [2022-01-10 23:52:18,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087881405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:18,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:18,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:18,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181818368] [2022-01-10 23:52:18,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:18,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:18,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:18,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:18,745 INFO L87 Difference]: Start difference. First operand 4279 states and 7331 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:19,475 INFO L93 Difference]: Finished difference Result 6623 states and 10831 transitions. [2022-01-10 23:52:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:19,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 23:52:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:19,487 INFO L225 Difference]: With dead ends: 6623 [2022-01-10 23:52:19,487 INFO L226 Difference]: Without dead ends: 6250 [2022-01-10 23:52:19,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:52:19,490 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 1358 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:19,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1358 Valid, 2965 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2022-01-10 23:52:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 4009. [2022-01-10 23:52:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 4008 states have (on average 1.7165668662674651) internal successors, (6880), 4008 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6880 transitions. [2022-01-10 23:52:19,792 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6880 transitions. Word has length 99 [2022-01-10 23:52:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:19,792 INFO L470 AbstractCegarLoop]: Abstraction has 4009 states and 6880 transitions. [2022-01-10 23:52:19,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6880 transitions. [2022-01-10 23:52:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 23:52:19,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:19,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:19,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:52:19,799 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:19,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:19,800 INFO L85 PathProgramCache]: Analyzing trace with hash -469349568, now seen corresponding path program 1 times [2022-01-10 23:52:19,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:19,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205615478] [2022-01-10 23:52:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:19,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:19,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:19,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205615478] [2022-01-10 23:52:19,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205615478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:19,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:19,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:52:19,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495489608] [2022-01-10 23:52:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:19,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:52:19,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:52:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:52:19,892 INFO L87 Difference]: Start difference. First operand 4009 states and 6880 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:20,341 INFO L93 Difference]: Finished difference Result 5101 states and 8573 transitions. [2022-01-10 23:52:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:52:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 23:52:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:20,348 INFO L225 Difference]: With dead ends: 5101 [2022-01-10 23:52:20,348 INFO L226 Difference]: Without dead ends: 4044 [2022-01-10 23:52:20,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:52:20,350 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1593 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:20,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 3690 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2022-01-10 23:52:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3899. [2022-01-10 23:52:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3899 states, 3898 states have (on average 1.7172909184197025) internal successors, (6694), 3898 states have internal predecessors, (6694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 6694 transitions. [2022-01-10 23:52:20,665 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 6694 transitions. Word has length 99 [2022-01-10 23:52:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:20,666 INFO L470 AbstractCegarLoop]: Abstraction has 3899 states and 6694 transitions. [2022-01-10 23:52:20,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 6694 transitions. [2022-01-10 23:52:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 23:52:20,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:20,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:20,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:52:20,673 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:20,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1727136492, now seen corresponding path program 1 times [2022-01-10 23:52:20,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:20,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772674096] [2022-01-10 23:52:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:20,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:20,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:20,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772674096] [2022-01-10 23:52:20,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772674096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:20,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:20,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:52:20,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650904629] [2022-01-10 23:52:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:20,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:52:20,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:52:20,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:52:20,791 INFO L87 Difference]: Start difference. First operand 3899 states and 6694 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:21,871 INFO L93 Difference]: Finished difference Result 6095 states and 9937 transitions. [2022-01-10 23:52:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 23:52:21,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 23:52:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:21,880 INFO L225 Difference]: With dead ends: 6095 [2022-01-10 23:52:21,880 INFO L226 Difference]: Without dead ends: 5886 [2022-01-10 23:52:21,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2022-01-10 23:52:21,882 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 4422 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4422 SdHoareTripleChecker+Valid, 6595 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:21,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4422 Valid, 6595 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2022-01-10 23:52:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 3940. [2022-01-10 23:52:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 3939 states have (on average 1.7136329017517136) internal successors, (6750), 3939 states have internal predecessors, (6750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 6750 transitions. [2022-01-10 23:52:22,210 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 6750 transitions. Word has length 100 [2022-01-10 23:52:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:22,210 INFO L470 AbstractCegarLoop]: Abstraction has 3940 states and 6750 transitions. [2022-01-10 23:52:22,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 6750 transitions. [2022-01-10 23:52:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 23:52:22,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:22,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:22,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:52:22,216 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash 650669687, now seen corresponding path program 1 times [2022-01-10 23:52:22,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:22,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369198507] [2022-01-10 23:52:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:22,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:22,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:22,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369198507] [2022-01-10 23:52:22,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369198507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:22,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:22,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:22,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716726138] [2022-01-10 23:52:22,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:22,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:52:22,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:52:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:52:22,302 INFO L87 Difference]: Start difference. First operand 3940 states and 6750 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:22,737 INFO L93 Difference]: Finished difference Result 4429 states and 7462 transitions. [2022-01-10 23:52:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:52:22,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 23:52:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:22,745 INFO L225 Difference]: With dead ends: 4429 [2022-01-10 23:52:22,745 INFO L226 Difference]: Without dead ends: 4198 [2022-01-10 23:52:22,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:22,746 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 267 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:22,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2235 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2022-01-10 23:52:23,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3946. [2022-01-10 23:52:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3945 states have (on average 1.711533586818758) internal successors, (6752), 3945 states have internal predecessors, (6752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6752 transitions. [2022-01-10 23:52:23,058 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6752 transitions. Word has length 100 [2022-01-10 23:52:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:23,058 INFO L470 AbstractCegarLoop]: Abstraction has 3946 states and 6752 transitions. [2022-01-10 23:52:23,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6752 transitions. [2022-01-10 23:52:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 23:52:23,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:23,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:23,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:52:23,064 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1989940067, now seen corresponding path program 1 times [2022-01-10 23:52:23,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:23,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197355907] [2022-01-10 23:52:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:23,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:23,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:23,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197355907] [2022-01-10 23:52:23,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197355907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:23,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:23,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:23,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828155812] [2022-01-10 23:52:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:23,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:23,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:23,150 INFO L87 Difference]: Start difference. First operand 3946 states and 6752 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:23,466 INFO L93 Difference]: Finished difference Result 4144 states and 7046 transitions. [2022-01-10 23:52:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:52:23,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 23:52:23,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:23,473 INFO L225 Difference]: With dead ends: 4144 [2022-01-10 23:52:23,473 INFO L226 Difference]: Without dead ends: 4066 [2022-01-10 23:52:23,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:23,474 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 560 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:23,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 2227 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2022-01-10 23:52:23,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3964. [2022-01-10 23:52:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3964 states, 3963 states have (on average 1.709815796114055) internal successors, (6776), 3963 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 6776 transitions. [2022-01-10 23:52:23,859 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 6776 transitions. Word has length 101 [2022-01-10 23:52:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:23,860 INFO L470 AbstractCegarLoop]: Abstraction has 3964 states and 6776 transitions. [2022-01-10 23:52:23,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 6776 transitions. [2022-01-10 23:52:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 23:52:23,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:23,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:23,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:52:23,865 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:23,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash 928105921, now seen corresponding path program 1 times [2022-01-10 23:52:23,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:23,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237606909] [2022-01-10 23:52:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:23,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:23,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:23,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237606909] [2022-01-10 23:52:23,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237606909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:23,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:23,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:23,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812292161] [2022-01-10 23:52:23,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:23,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:23,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:23,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:23,950 INFO L87 Difference]: Start difference. First operand 3964 states and 6776 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:24,731 INFO L93 Difference]: Finished difference Result 8715 states and 14708 transitions. [2022-01-10 23:52:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:52:24,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 23:52:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:24,743 INFO L225 Difference]: With dead ends: 8715 [2022-01-10 23:52:24,743 INFO L226 Difference]: Without dead ends: 8463 [2022-01-10 23:52:24,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:52:24,745 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1217 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:24,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 2960 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8463 states. [2022-01-10 23:52:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8463 to 7321. [2022-01-10 23:52:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7321 states, 7320 states have (on average 1.7327868852459016) internal successors, (12684), 7320 states have internal predecessors, (12684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 12684 transitions. [2022-01-10 23:52:25,258 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 12684 transitions. Word has length 106 [2022-01-10 23:52:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:25,259 INFO L470 AbstractCegarLoop]: Abstraction has 7321 states and 12684 transitions. [2022-01-10 23:52:25,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 12684 transitions. [2022-01-10 23:52:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 23:52:25,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:25,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:25,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:52:25,272 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash -113539062, now seen corresponding path program 1 times [2022-01-10 23:52:25,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:25,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010005427] [2022-01-10 23:52:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:25,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:25,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:25,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010005427] [2022-01-10 23:52:25,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010005427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:25,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:25,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:52:25,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528172340] [2022-01-10 23:52:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:25,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:52:25,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:52:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:25,414 INFO L87 Difference]: Start difference. First operand 7321 states and 12684 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:26,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:26,330 INFO L93 Difference]: Finished difference Result 8996 states and 15236 transitions. [2022-01-10 23:52:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:52:26,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 23:52:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:26,340 INFO L225 Difference]: With dead ends: 8996 [2022-01-10 23:52:26,340 INFO L226 Difference]: Without dead ends: 8787 [2022-01-10 23:52:26,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-10 23:52:26,341 INFO L933 BasicCegarLoop]: 1238 mSDtfsCounter, 1490 mSDsluCounter, 4227 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 5465 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:26,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 5465 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:26,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8787 states. [2022-01-10 23:52:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8787 to 7329. [2022-01-10 23:52:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7328 states have (on average 1.7314410480349345) internal successors, (12688), 7328 states have internal predecessors, (12688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 12688 transitions. [2022-01-10 23:52:26,816 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 12688 transitions. Word has length 106 [2022-01-10 23:52:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:26,816 INFO L470 AbstractCegarLoop]: Abstraction has 7329 states and 12688 transitions. [2022-01-10 23:52:26,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 12688 transitions. [2022-01-10 23:52:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 23:52:26,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:26,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:26,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 23:52:26,829 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1767529426, now seen corresponding path program 1 times [2022-01-10 23:52:26,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422859270] [2022-01-10 23:52:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:26,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:26,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422859270] [2022-01-10 23:52:26,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422859270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:26,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:26,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:26,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173619170] [2022-01-10 23:52:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:26,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:26,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:26,912 INFO L87 Difference]: Start difference. First operand 7329 states and 12688 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:28,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:28,109 INFO L93 Difference]: Finished difference Result 15445 states and 26532 transitions. [2022-01-10 23:52:28,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:52:28,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 23:52:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:28,127 INFO L225 Difference]: With dead ends: 15445 [2022-01-10 23:52:28,127 INFO L226 Difference]: Without dead ends: 15193 [2022-01-10 23:52:28,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:52:28,130 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 1043 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:28,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 3076 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15193 states. [2022-01-10 23:52:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15193 to 14034. [2022-01-10 23:52:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14034 states, 14033 states have (on average 1.7457421791491485) internal successors, (24498), 14033 states have internal predecessors, (24498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14034 states to 14034 states and 24498 transitions. [2022-01-10 23:52:29,078 INFO L78 Accepts]: Start accepts. Automaton has 14034 states and 24498 transitions. Word has length 107 [2022-01-10 23:52:29,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:29,078 INFO L470 AbstractCegarLoop]: Abstraction has 14034 states and 24498 transitions. [2022-01-10 23:52:29,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 14034 states and 24498 transitions. [2022-01-10 23:52:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 23:52:29,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:29,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:29,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 23:52:29,100 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:29,101 INFO L85 PathProgramCache]: Analyzing trace with hash -305949427, now seen corresponding path program 1 times [2022-01-10 23:52:29,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:29,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856236082] [2022-01-10 23:52:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:29,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:29,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:29,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856236082] [2022-01-10 23:52:29,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856236082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:29,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:29,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 23:52:29,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564435511] [2022-01-10 23:52:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:29,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 23:52:29,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 23:52:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-01-10 23:52:29,290 INFO L87 Difference]: Start difference. First operand 14034 states and 24498 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:32,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:32,661 INFO L93 Difference]: Finished difference Result 20669 states and 34615 transitions. [2022-01-10 23:52:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-10 23:52:32,662 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 23:52:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:32,689 INFO L225 Difference]: With dead ends: 20669 [2022-01-10 23:52:32,689 INFO L226 Difference]: Without dead ends: 20640 [2022-01-10 23:52:32,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=986, Invalid=3304, Unknown=0, NotChecked=0, Total=4290 [2022-01-10 23:52:32,694 INFO L933 BasicCegarLoop]: 1205 mSDtfsCounter, 4051 mSDsluCounter, 12926 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 14131 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:32,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4051 Valid, 14131 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:52:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20640 states. [2022-01-10 23:52:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20640 to 14056. [2022-01-10 23:52:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14056 states, 14055 states have (on average 1.7450017787264318) internal successors, (24526), 14055 states have internal predecessors, (24526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14056 states to 14056 states and 24526 transitions. [2022-01-10 23:52:33,681 INFO L78 Accepts]: Start accepts. Automaton has 14056 states and 24526 transitions. Word has length 107 [2022-01-10 23:52:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:33,681 INFO L470 AbstractCegarLoop]: Abstraction has 14056 states and 24526 transitions. [2022-01-10 23:52:33,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 14056 states and 24526 transitions. [2022-01-10 23:52:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 23:52:33,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:33,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:33,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 23:52:33,700 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1356222341, now seen corresponding path program 1 times [2022-01-10 23:52:33,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:33,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876975953] [2022-01-10 23:52:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:33,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:33,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:33,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876975953] [2022-01-10 23:52:33,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876975953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:33,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:33,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 23:52:33,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240120597] [2022-01-10 23:52:33,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:33,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 23:52:33,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:33,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 23:52:33,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:52:33,862 INFO L87 Difference]: Start difference. First operand 14056 states and 24526 transitions. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:42,328 INFO L93 Difference]: Finished difference Result 54850 states and 92201 transitions. [2022-01-10 23:52:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-10 23:52:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 23:52:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:42,420 INFO L225 Difference]: With dead ends: 54850 [2022-01-10 23:52:42,421 INFO L226 Difference]: Without dead ends: 54827 [2022-01-10 23:52:42,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3161 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2098, Invalid=7022, Unknown=0, NotChecked=0, Total=9120 [2022-01-10 23:52:42,438 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 12545 mSDsluCounter, 9120 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12545 SdHoareTripleChecker+Valid, 9973 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:42,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12545 Valid, 9973 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:52:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54827 states. [2022-01-10 23:52:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54827 to 41520. [2022-01-10 23:52:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41520 states, 41519 states have (on average 1.7482839182061225) internal successors, (72587), 41519 states have internal predecessors, (72587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41520 states to 41520 states and 72587 transitions. [2022-01-10 23:52:45,691 INFO L78 Accepts]: Start accepts. Automaton has 41520 states and 72587 transitions. Word has length 108 [2022-01-10 23:52:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:45,691 INFO L470 AbstractCegarLoop]: Abstraction has 41520 states and 72587 transitions. [2022-01-10 23:52:45,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 41520 states and 72587 transitions. [2022-01-10 23:52:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 23:52:45,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:45,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:45,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 23:52:45,757 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:45,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash -29545305, now seen corresponding path program 1 times [2022-01-10 23:52:45,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:45,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806385606] [2022-01-10 23:52:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:45,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:45,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:45,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806385606] [2022-01-10 23:52:45,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806385606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:45,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:45,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 23:52:45,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342823935] [2022-01-10 23:52:45,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:45,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 23:52:45,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 23:52:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-01-10 23:52:45,924 INFO L87 Difference]: Start difference. First operand 41520 states and 72587 transitions. Second operand has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 14 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:52,641 INFO L93 Difference]: Finished difference Result 51858 states and 88450 transitions. [2022-01-10 23:52:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-10 23:52:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 14 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 23:52:52,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:52,723 INFO L225 Difference]: With dead ends: 51858 [2022-01-10 23:52:52,724 INFO L226 Difference]: Without dead ends: 51847 [2022-01-10 23:52:52,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=986, Invalid=3304, Unknown=0, NotChecked=0, Total=4290 [2022-01-10 23:52:52,739 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 3872 mSDsluCounter, 13423 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 14711 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:52,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3872 Valid, 14711 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:52:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51847 states. [2022-01-10 23:52:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51847 to 41538. [2022-01-10 23:52:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41538 states, 41537 states have (on average 1.7482485494860005) internal successors, (72617), 41537 states have internal predecessors, (72617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41538 states to 41538 states and 72617 transitions. [2022-01-10 23:52:55,813 INFO L78 Accepts]: Start accepts. Automaton has 41538 states and 72617 transitions. Word has length 108 [2022-01-10 23:52:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:55,814 INFO L470 AbstractCegarLoop]: Abstraction has 41538 states and 72617 transitions. [2022-01-10 23:52:55,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 14 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 41538 states and 72617 transitions. [2022-01-10 23:52:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 23:52:55,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:55,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:55,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 23:52:55,873 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1600749003, now seen corresponding path program 1 times [2022-01-10 23:52:55,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:55,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203491715] [2022-01-10 23:52:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:55,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:56,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:56,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203491715] [2022-01-10 23:52:56,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203491715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:56,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:56,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:52:56,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676800420] [2022-01-10 23:52:56,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:56,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 23:52:56,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 23:52:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:52:56,002 INFO L87 Difference]: Start difference. First operand 41538 states and 72617 transitions. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:00,782 INFO L93 Difference]: Finished difference Result 47124 states and 81482 transitions. [2022-01-10 23:53:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 23:53:00,782 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 23:53:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:00,847 INFO L225 Difference]: With dead ends: 47124 [2022-01-10 23:53:00,847 INFO L226 Difference]: Without dead ends: 47090 [2022-01-10 23:53:00,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 23:53:00,858 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 2535 mSDsluCounter, 8246 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2535 SdHoareTripleChecker+Valid, 9471 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:00,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2535 Valid, 9471 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:53:00,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47090 states. [2022-01-10 23:53:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47090 to 41554. [2022-01-10 23:53:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41554 states, 41553 states have (on average 1.7480085673717902) internal successors, (72635), 41553 states have internal predecessors, (72635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41554 states to 41554 states and 72635 transitions. [2022-01-10 23:53:04,199 INFO L78 Accepts]: Start accepts. Automaton has 41554 states and 72635 transitions. Word has length 108 [2022-01-10 23:53:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:04,199 INFO L470 AbstractCegarLoop]: Abstraction has 41554 states and 72635 transitions. [2022-01-10 23:53:04,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 41554 states and 72635 transitions. [2022-01-10 23:53:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 23:53:04,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:04,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:04,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 23:53:04,370 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:04,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1607127449, now seen corresponding path program 1 times [2022-01-10 23:53:04,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:04,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659392016] [2022-01-10 23:53:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:04,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:04,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:04,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659392016] [2022-01-10 23:53:04,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659392016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:04,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:04,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:04,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816137847] [2022-01-10 23:53:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:04,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:04,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:04,488 INFO L87 Difference]: Start difference. First operand 41554 states and 72635 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)