/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 14:59:03,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 14:59:03,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 14:59:03,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-01 14:59:03,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-01 14:59:03,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-01 14:59:03,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-01 14:59:03,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-01 14:59:03,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-01 14:59:03,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-01 14:59:03,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-01 14:59:03,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-01 14:59:03,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 14:59:03,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 14:59:03,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 14:59:03,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 14:59:03,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 14:59:03,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 14:59:03,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 14:59:03,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 14:59:03,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 14:59:03,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 14:59:03,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 14:59:03,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 14:59:03,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-01 14:59:03,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-01 14:59:03,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-01 14:59:03,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-01 14:59:03,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-01 14:59:03,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-01 14:59:03,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-01 14:59:03,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-01 14:59:03,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-01 14:59:03,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-01 14:59:03,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-01 14:59:03,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-01 14:59:03,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-01 14:59:03,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-01 14:59:03,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 14:59:03,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 14:59:03,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 14:59:03,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 14:59:03,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 14:59:03,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 14:59:03,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 14:59:03,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 14:59:03,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 14:59:03,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 14:59:03,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 14:59:03,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 14:59:03,762 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 14:59:03,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 14:59:03,763 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 14:59:03,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 14:59:03,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 14:59:03,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 14:59:03,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 14:59:03,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 14:59:03,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 14:59:03,764 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 14:59:03,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 14:59:03,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 14:59:03,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 14:59:03,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 14:59:03,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 14:59:03,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 14:59:03,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 14:59:03,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 14:59:03,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 14:59:03,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 14:59:03,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 14:59:03,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 14:59:03,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 14:59:03,766 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 14:59:03,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 14:59:03,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 14:59:03,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 14:59:03,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 14:59:03,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 14:59:03,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 14:59:03,996 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 14:59:03,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-03-01 14:59:04,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ef50f9a/691e65b8060a4ecabf2a8148648bd900/FLAG3d6aa285b [2022-03-01 14:59:04,439 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 14:59:04,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-03-01 14:59:04,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ef50f9a/691e65b8060a4ecabf2a8148648bd900/FLAG3d6aa285b [2022-03-01 14:59:04,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ef50f9a/691e65b8060a4ecabf2a8148648bd900 [2022-03-01 14:59:04,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 14:59:04,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 14:59:04,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 14:59:04,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 14:59:04,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 14:59:04,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed0ff6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04, skipping insertion in model container [2022-03-01 14:59:04,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 14:59:04,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 14:59:04,655 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-01 14:59:04,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-03-01 14:59:04,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-03-01 14:59:04,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-03-01 14:59:04,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 14:59:04,790 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 14:59:04,808 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-01 14:59:04,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-03-01 14:59:04,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-03-01 14:59:04,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-03-01 14:59:04,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 14:59:04,863 INFO L208 MainTranslator]: Completed translation [2022-03-01 14:59:04,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04 WrapperNode [2022-03-01 14:59:04,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 14:59:04,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 14:59:04,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 14:59:04,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 14:59:04,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,917 INFO L137 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2022-03-01 14:59:04,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 14:59:04,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 14:59:04,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 14:59:04,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 14:59:04,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 14:59:04,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 14:59:04,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 14:59:04,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 14:59:04,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (1/1) ... [2022-03-01 14:59:04,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 14:59:04,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 14:59:04,969 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) [2022-03-01 14:59:04,981 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 [2022-03-01 14:59:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-03-01 14:59:05,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-03-01 14:59:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 14:59:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 14:59:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 14:59:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 14:59:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 14:59:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 14:59:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 14:59:05,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 14:59:05,002 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 14:59:05,127 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 14:59:05,128 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 14:59:05,309 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 14:59:05,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 14:59:05,315 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-01 14:59:05,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 02:59:05 BoogieIcfgContainer [2022-03-01 14:59:05,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 14:59:05,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 14:59:05,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 14:59:05,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 14:59:05,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 02:59:04" (1/3) ... [2022-03-01 14:59:05,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784897d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 02:59:05, skipping insertion in model container [2022-03-01 14:59:05,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 02:59:04" (2/3) ... [2022-03-01 14:59:05,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784897d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 02:59:05, skipping insertion in model container [2022-03-01 14:59:05,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 02:59:05" (3/3) ... [2022-03-01 14:59:05,322 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-03-01 14:59:05,325 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 14:59:05,325 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 14:59:05,325 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-03-01 14:59:05,325 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 14:59:05,352 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,352 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,352 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,352 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,352 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,352 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,353 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,354 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,355 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,355 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,355 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,355 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,355 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,356 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,356 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,356 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,356 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,356 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,356 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,356 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,357 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,358 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,359 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,360 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,361 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,362 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,363 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,363 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,363 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,363 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,363 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,363 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,363 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,364 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,365 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,366 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,367 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,368 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,368 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,368 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,368 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,368 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,368 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,368 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,369 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,369 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,369 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,369 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,369 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,370 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,371 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,371 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,387 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,387 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,387 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,388 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,388 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,388 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,388 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,388 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,388 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,388 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,389 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,390 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,391 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,392 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,392 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,392 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,392 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,392 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,392 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,393 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,394 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,394 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,394 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,394 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,394 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,394 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,394 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,395 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,395 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,395 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,395 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,396 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,397 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,397 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,397 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,397 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,398 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,399 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,399 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,399 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,399 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,399 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,399 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,399 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,400 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,401 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,401 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,401 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,420 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,421 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,422 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,423 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,423 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,423 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 14:59:05,426 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-01 14:59:05,475 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 14:59:05,490 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=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 14:59:05,490 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-01 14:59:05,499 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 158 transitions, 324 flow [2022-03-01 14:59:05,603 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2540 states, 2537 states have (on average 2.127709893575089) internal successors, (5398), 2539 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2537 states have (on average 2.127709893575089) internal successors, (5398), 2539 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-01 14:59:05,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:05,617 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] [2022-03-01 14:59:05,617 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:05,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash 847621616, now seen corresponding path program 1 times [2022-03-01 14:59:05,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:05,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598148337] [2022-03-01 14:59:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:05,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:05,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:05,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598148337] [2022-03-01 14:59:05,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598148337] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:05,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:05,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 14:59:05,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829812278] [2022-03-01 14:59:05,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:05,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 14:59:05,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 14:59:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 14:59:05,860 INFO L87 Difference]: Start difference. First operand has 2540 states, 2537 states have (on average 2.127709893575089) internal successors, (5398), 2539 states have internal predecessors, (5398), 0 states have call successors, (0), 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 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:05,905 INFO L93 Difference]: Finished difference Result 2540 states and 5152 transitions. [2022-03-01 14:59:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 14:59:05,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-03-01 14:59:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:05,937 INFO L225 Difference]: With dead ends: 2540 [2022-03-01 14:59:05,938 INFO L226 Difference]: Without dead ends: 2540 [2022-03-01 14:59:05,945 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 [2022-03-01 14:59:05,949 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:05,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:59:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-03-01 14:59:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2540. [2022-03-01 14:59:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2537 states have (on average 2.030744974379188) internal successors, (5152), 2539 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 5152 transitions. [2022-03-01 14:59:06,068 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 5152 transitions. Word has length 40 [2022-03-01 14:59:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:06,068 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 5152 transitions. [2022-03-01 14:59:06,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 5152 transitions. [2022-03-01 14:59:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-01 14:59:06,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:06,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:59:06,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 14:59:06,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 506434889, now seen corresponding path program 1 times [2022-03-01 14:59:06,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:06,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291850878] [2022-03-01 14:59:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:06,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:06,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291850878] [2022-03-01 14:59:06,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291850878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:06,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:06,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 14:59:06,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891787773] [2022-03-01 14:59:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:06,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 14:59:06,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 14:59:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 14:59:06,150 INFO L87 Difference]: Start difference. First operand 2540 states and 5152 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:06,210 INFO L93 Difference]: Finished difference Result 4136 states and 8424 transitions. [2022-03-01 14:59:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 14:59:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-03-01 14:59:06,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:06,223 INFO L225 Difference]: With dead ends: 4136 [2022-03-01 14:59:06,223 INFO L226 Difference]: Without dead ends: 4136 [2022-03-01 14:59:06,224 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 [2022-03-01 14:59:06,225 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 80 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:06,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 305 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 14:59:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2022-03-01 14:59:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3148. [2022-03-01 14:59:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3145 states have (on average 2.0419713831478536) internal successors, (6422), 3147 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 6422 transitions. [2022-03-01 14:59:06,302 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 6422 transitions. Word has length 41 [2022-03-01 14:59:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:06,304 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 6422 transitions. [2022-03-01 14:59:06,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 6422 transitions. [2022-03-01 14:59:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-01 14:59:06,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:06,313 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] [2022-03-01 14:59:06,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 14:59:06,314 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -654644372, now seen corresponding path program 1 times [2022-03-01 14:59:06,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:06,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410693193] [2022-03-01 14:59:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:06,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:06,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410693193] [2022-03-01 14:59:06,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410693193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:06,881 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:06,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-01 14:59:06,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432584588] [2022-03-01 14:59:06,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:06,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 14:59:06,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 14:59:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-03-01 14:59:06,883 INFO L87 Difference]: Start difference. First operand 3148 states and 6422 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:08,323 INFO L93 Difference]: Finished difference Result 3509 states and 7163 transitions. [2022-03-01 14:59:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-01 14:59:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-01 14:59:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:08,333 INFO L225 Difference]: With dead ends: 3509 [2022-03-01 14:59:08,334 INFO L226 Difference]: Without dead ends: 3353 [2022-03-01 14:59:08,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=361, Invalid=971, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 14:59:08,335 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1166 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:08,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 2909 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 14:59:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2022-03-01 14:59:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3088. [2022-03-01 14:59:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3085 states have (on average 2.045705024311183) internal successors, (6311), 3087 states have internal predecessors, (6311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 6311 transitions. [2022-03-01 14:59:08,389 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 6311 transitions. Word has length 74 [2022-03-01 14:59:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:08,391 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 6311 transitions. [2022-03-01 14:59:08,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 6311 transitions. [2022-03-01 14:59:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:08,428 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:08,429 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] [2022-03-01 14:59:08,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 14:59:08,429 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1119085425, now seen corresponding path program 1 times [2022-03-01 14:59:08,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:08,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213606897] [2022-03-01 14:59:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:08,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:09,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:09,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213606897] [2022-03-01 14:59:09,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213606897] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:09,099 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:09,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:09,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741324403] [2022-03-01 14:59:09,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:09,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:09,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:09,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:09,100 INFO L87 Difference]: Start difference. First operand 3088 states and 6311 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:14,718 INFO L93 Difference]: Finished difference Result 4311 states and 8834 transitions. [2022-03-01 14:59:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 14:59:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:14,735 INFO L225 Difference]: With dead ends: 4311 [2022-03-01 14:59:14,735 INFO L226 Difference]: Without dead ends: 4311 [2022-03-01 14:59:14,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1453, Invalid=4247, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 14:59:14,737 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1239 mSDsluCounter, 4043 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:14,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 4379 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 14:59:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-03-01 14:59:14,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3439. [2022-03-01 14:59:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 3436 states have (on average 2.0480209545983703) internal successors, (7037), 3438 states have internal predecessors, (7037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 7037 transitions. [2022-03-01 14:59:14,806 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 7037 transitions. Word has length 96 [2022-03-01 14:59:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:14,806 INFO L470 AbstractCegarLoop]: Abstraction has 3439 states and 7037 transitions. [2022-03-01 14:59:14,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 7037 transitions. [2022-03-01 14:59:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:14,809 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:14,810 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] [2022-03-01 14:59:14,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 14:59:14,810 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:14,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1259521701, now seen corresponding path program 2 times [2022-03-01 14:59:14,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:14,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670422531] [2022-03-01 14:59:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:15,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:15,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670422531] [2022-03-01 14:59:15,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670422531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:15,590 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:15,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-03-01 14:59:15,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778668260] [2022-03-01 14:59:15,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:15,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-01 14:59:15,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-01 14:59:15,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-03-01 14:59:15,592 INFO L87 Difference]: Start difference. First operand 3439 states and 7037 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 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) [2022-03-01 14:59:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:22,028 INFO L93 Difference]: Finished difference Result 4308 states and 8822 transitions. [2022-03-01 14:59:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 14:59:22,028 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 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 [2022-03-01 14:59:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:22,041 INFO L225 Difference]: With dead ends: 4308 [2022-03-01 14:59:22,041 INFO L226 Difference]: Without dead ends: 4308 [2022-03-01 14:59:22,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1594, Invalid=4568, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 14:59:22,045 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1324 mSDsluCounter, 5512 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 5880 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:22,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 5880 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 14:59:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-03-01 14:59:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3443. [2022-03-01 14:59:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3443 states, 3440 states have (on average 2.04796511627907) internal successors, (7045), 3442 states have internal predecessors, (7045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 7045 transitions. [2022-03-01 14:59:22,102 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 7045 transitions. Word has length 96 [2022-03-01 14:59:22,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:22,103 INFO L470 AbstractCegarLoop]: Abstraction has 3443 states and 7045 transitions. [2022-03-01 14:59:22,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 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) [2022-03-01 14:59:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 7045 transitions. [2022-03-01 14:59:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:22,110 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:22,110 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] [2022-03-01 14:59:22,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 14:59:22,110 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2109335891, now seen corresponding path program 3 times [2022-03-01 14:59:22,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:22,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314494591] [2022-03-01 14:59:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:22,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:22,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:22,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314494591] [2022-03-01 14:59:22,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314494591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:22,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:22,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:22,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390102738] [2022-03-01 14:59:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:22,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:22,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:22,594 INFO L87 Difference]: Start difference. First operand 3443 states and 7045 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:27,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:27,395 INFO L93 Difference]: Finished difference Result 4297 states and 8799 transitions. [2022-03-01 14:59:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 14:59:27,395 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:27,412 INFO L225 Difference]: With dead ends: 4297 [2022-03-01 14:59:27,412 INFO L226 Difference]: Without dead ends: 4297 [2022-03-01 14:59:27,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1536, Invalid=4470, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 14:59:27,414 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 1342 mSDsluCounter, 4353 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:27,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 4682 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 14:59:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2022-03-01 14:59:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3444. [2022-03-01 14:59:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3444 states, 3441 states have (on average 2.047951176983435) internal successors, (7047), 3443 states have internal predecessors, (7047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 7047 transitions. [2022-03-01 14:59:27,465 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 7047 transitions. Word has length 96 [2022-03-01 14:59:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:27,465 INFO L470 AbstractCegarLoop]: Abstraction has 3444 states and 7047 transitions. [2022-03-01 14:59:27,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 7047 transitions. [2022-03-01 14:59:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:27,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:27,471 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] [2022-03-01 14:59:27,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 14:59:27,471 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash -340043283, now seen corresponding path program 4 times [2022-03-01 14:59:27,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:27,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515629209] [2022-03-01 14:59:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:27,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:28,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:28,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515629209] [2022-03-01 14:59:28,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515629209] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:28,066 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:28,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:28,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586155851] [2022-03-01 14:59:28,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:28,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:28,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:28,068 INFO L87 Difference]: Start difference. First operand 3444 states and 7047 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:33,129 INFO L93 Difference]: Finished difference Result 4302 states and 8809 transitions. [2022-03-01 14:59:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 14:59:33,130 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:33,138 INFO L225 Difference]: With dead ends: 4302 [2022-03-01 14:59:33,138 INFO L226 Difference]: Without dead ends: 4302 [2022-03-01 14:59:33,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1387, Invalid=3443, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 14:59:33,139 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1334 mSDsluCounter, 3992 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:33,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 4334 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 14:59:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4302 states. [2022-03-01 14:59:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4302 to 3447. [2022-03-01 14:59:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3444 states have (on average 2.047909407665505) internal successors, (7053), 3446 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 7053 transitions. [2022-03-01 14:59:33,197 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 7053 transitions. Word has length 96 [2022-03-01 14:59:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:33,197 INFO L470 AbstractCegarLoop]: Abstraction has 3447 states and 7053 transitions. [2022-03-01 14:59:33,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 7053 transitions. [2022-03-01 14:59:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:33,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:33,202 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] [2022-03-01 14:59:33,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 14:59:33,203 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1585435859, now seen corresponding path program 5 times [2022-03-01 14:59:33,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:33,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321918513] [2022-03-01 14:59:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:33,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:33,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321918513] [2022-03-01 14:59:33,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321918513] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:33,714 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:33,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:33,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253212683] [2022-03-01 14:59:33,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:33,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:33,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:33,716 INFO L87 Difference]: Start difference. First operand 3447 states and 7053 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:37,329 INFO L93 Difference]: Finished difference Result 4320 states and 8838 transitions. [2022-03-01 14:59:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 14:59:37,330 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:37,337 INFO L225 Difference]: With dead ends: 4320 [2022-03-01 14:59:37,337 INFO L226 Difference]: Without dead ends: 4320 [2022-03-01 14:59:37,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1216, Invalid=3614, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 14:59:37,342 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1337 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 4977 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:37,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 4977 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 14:59:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2022-03-01 14:59:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 3522. [2022-03-01 14:59:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3519 states have (on average 2.048025007104291) internal successors, (7207), 3521 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 7207 transitions. [2022-03-01 14:59:37,444 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 7207 transitions. Word has length 96 [2022-03-01 14:59:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:37,445 INFO L470 AbstractCegarLoop]: Abstraction has 3522 states and 7207 transitions. [2022-03-01 14:59:37,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 7207 transitions. [2022-03-01 14:59:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:37,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:37,448 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] [2022-03-01 14:59:37,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 14:59:37,448 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:37,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash 735621669, now seen corresponding path program 6 times [2022-03-01 14:59:37,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:37,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291244570] [2022-03-01 14:59:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:37,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:38,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:38,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291244570] [2022-03-01 14:59:38,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291244570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:38,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:38,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:38,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258641985] [2022-03-01 14:59:38,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:38,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:38,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:38,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:38,005 INFO L87 Difference]: Start difference. First operand 3522 states and 7207 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:42,989 INFO L93 Difference]: Finished difference Result 4340 states and 8877 transitions. [2022-03-01 14:59:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 14:59:42,989 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:42,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:42,995 INFO L225 Difference]: With dead ends: 4340 [2022-03-01 14:59:42,996 INFO L226 Difference]: Without dead ends: 4340 [2022-03-01 14:59:42,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1327, Invalid=3929, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 14:59:42,997 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1358 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:42,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1358 Valid, 4307 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 14:59:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2022-03-01 14:59:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3523. [2022-03-01 14:59:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3523 states, 3520 states have (on average 2.0480113636363635) internal successors, (7209), 3522 states have internal predecessors, (7209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3523 states to 3523 states and 7209 transitions. [2022-03-01 14:59:43,038 INFO L78 Accepts]: Start accepts. Automaton has 3523 states and 7209 transitions. Word has length 96 [2022-03-01 14:59:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:43,038 INFO L470 AbstractCegarLoop]: Abstraction has 3523 states and 7209 transitions. [2022-03-01 14:59:43,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3523 states and 7209 transitions. [2022-03-01 14:59:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:43,041 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:43,041 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] [2022-03-01 14:59:43,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 14:59:43,041 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:43,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:43,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1790053019, now seen corresponding path program 7 times [2022-03-01 14:59:43,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:43,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514136424] [2022-03-01 14:59:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:43,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:43,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514136424] [2022-03-01 14:59:43,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514136424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:43,508 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:43,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:43,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49086292] [2022-03-01 14:59:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:43,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:43,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:43,509 INFO L87 Difference]: Start difference. First operand 3523 states and 7209 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:48,363 INFO L93 Difference]: Finished difference Result 4303 states and 8802 transitions. [2022-03-01 14:59:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 14:59:48,364 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:48,370 INFO L225 Difference]: With dead ends: 4303 [2022-03-01 14:59:48,370 INFO L226 Difference]: Without dead ends: 4303 [2022-03-01 14:59:48,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1180, Invalid=2980, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 14:59:48,371 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1236 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:48,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 4533 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 14:59:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2022-03-01 14:59:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 3719. [2022-03-01 14:59:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3719 states, 3716 states have (on average 2.04978471474704) internal successors, (7617), 3718 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:48,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 7617 transitions. [2022-03-01 14:59:48,412 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 7617 transitions. Word has length 96 [2022-03-01 14:59:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:48,412 INFO L470 AbstractCegarLoop]: Abstraction has 3719 states and 7617 transitions. [2022-03-01 14:59:48,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 7617 transitions. [2022-03-01 14:59:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:48,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:48,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 14:59:48,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 14:59:48,416 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1937409939, now seen corresponding path program 8 times [2022-03-01 14:59:48,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:48,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219822729] [2022-03-01 14:59:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:48,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:48,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:48,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219822729] [2022-03-01 14:59:48,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219822729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:48,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:48,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:48,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160782358] [2022-03-01 14:59:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:48,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:48,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:48,935 INFO L87 Difference]: Start difference. First operand 3719 states and 7617 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:51,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:51,853 INFO L93 Difference]: Finished difference Result 4401 states and 9001 transitions. [2022-03-01 14:59:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 14:59:51,854 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:51,860 INFO L225 Difference]: With dead ends: 4401 [2022-03-01 14:59:51,860 INFO L226 Difference]: Without dead ends: 4401 [2022-03-01 14:59:51,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=842, Invalid=2940, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 14:59:51,861 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1150 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 5002 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:51,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 5002 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 14:59:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2022-03-01 14:59:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3737. [2022-03-01 14:59:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3734 states have (on average 2.0495447241564007) internal successors, (7653), 3736 states have internal predecessors, (7653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 7653 transitions. [2022-03-01 14:59:51,901 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 7653 transitions. Word has length 96 [2022-03-01 14:59:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:51,901 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 7653 transitions. [2022-03-01 14:59:51,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 7653 transitions. [2022-03-01 14:59:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:51,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:51,904 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] [2022-03-01 14:59:51,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 14:59:51,905 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash -588264749, now seen corresponding path program 9 times [2022-03-01 14:59:51,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:51,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590037410] [2022-03-01 14:59:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:51,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:52,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:52,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590037410] [2022-03-01 14:59:52,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590037410] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:52,494 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:52,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 14:59:52,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273334697] [2022-03-01 14:59:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:52,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 14:59:52,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 14:59:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-03-01 14:59:52,495 INFO L87 Difference]: Start difference. First operand 3737 states and 7653 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 14:59:56,483 INFO L93 Difference]: Finished difference Result 4337 states and 8870 transitions. [2022-03-01 14:59:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 14:59:56,484 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 14:59:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 14:59:56,502 INFO L225 Difference]: With dead ends: 4337 [2022-03-01 14:59:56,503 INFO L226 Difference]: Without dead ends: 4337 [2022-03-01 14:59:56,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1204, Invalid=3086, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 14:59:56,513 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1343 mSDsluCounter, 4208 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 14:59:56,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 4549 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 14:59:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4337 states. [2022-03-01 14:59:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4337 to 3644. [2022-03-01 14:59:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3641 states have (on average 2.048063718758583) internal successors, (7457), 3643 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 14:59:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 7457 transitions. [2022-03-01 14:59:56,560 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 7457 transitions. Word has length 96 [2022-03-01 14:59:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 14:59:56,560 INFO L470 AbstractCegarLoop]: Abstraction has 3644 states and 7457 transitions. [2022-03-01 14:59:56,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 14:59:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 7457 transitions. [2022-03-01 14:59:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 14:59:56,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 14:59:56,564 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] [2022-03-01 14:59:56,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 14:59:56,564 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 14:59:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 14:59:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash 847590765, now seen corresponding path program 10 times [2022-03-01 14:59:56,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 14:59:56,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218371325] [2022-03-01 14:59:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 14:59:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 14:59:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 14:59:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 14:59:57,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 14:59:57,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218371325] [2022-03-01 14:59:57,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218371325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 14:59:57,068 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 14:59:57,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-01 14:59:57,069 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984229797] [2022-03-01 14:59:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 14:59:57,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 14:59:57,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 14:59:57,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 14:59:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-03-01 14:59:57,070 INFO L87 Difference]: Start difference. First operand 3644 states and 7457 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:00:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:04,800 INFO L93 Difference]: Finished difference Result 4318 states and 8828 transitions. [2022-03-01 15:00:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 15:00:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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 [2022-03-01 15:00:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:04,806 INFO L225 Difference]: With dead ends: 4318 [2022-03-01 15:00:04,806 INFO L226 Difference]: Without dead ends: 4318 [2022-03-01 15:00:04,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2938, Invalid=7162, Unknown=0, NotChecked=0, Total=10100 [2022-03-01 15:00:04,810 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1628 mSDsluCounter, 4261 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4648 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:04,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 4648 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:00:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2022-03-01 15:00:04,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 3525. [2022-03-01 15:00:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3522 states have (on average 2.045428733674049) internal successors, (7204), 3524 states have internal predecessors, (7204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 7204 transitions. [2022-03-01 15:00:04,849 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 7204 transitions. Word has length 96 [2022-03-01 15:00:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:04,849 INFO L470 AbstractCegarLoop]: Abstraction has 3525 states and 7204 transitions. [2022-03-01 15:00:04,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:00:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 7204 transitions. [2022-03-01 15:00:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:04,852 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:04,852 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] [2022-03-01 15:00:04,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 15:00:04,852 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1757374095, now seen corresponding path program 11 times [2022-03-01 15:00:04,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:04,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251652132] [2022-03-01 15:00:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:05,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:05,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251652132] [2022-03-01 15:00:05,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251652132] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:05,374 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:05,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:05,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550735907] [2022-03-01 15:00:05,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:05,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:05,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:05,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:05,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:05,375 INFO L87 Difference]: Start difference. First operand 3525 states and 7204 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:09,890 INFO L93 Difference]: Finished difference Result 5034 states and 10338 transitions. [2022-03-01 15:00:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:00:09,890 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:09,897 INFO L225 Difference]: With dead ends: 5034 [2022-03-01 15:00:09,897 INFO L226 Difference]: Without dead ends: 5034 [2022-03-01 15:00:09,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1452, Invalid=4248, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:00:09,898 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1214 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:09,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 4656 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:00:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2022-03-01 15:00:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 3759. [2022-03-01 15:00:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3756 states have (on average 2.0543130990415337) internal successors, (7716), 3758 states have internal predecessors, (7716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 7716 transitions. [2022-03-01 15:00:09,951 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 7716 transitions. Word has length 96 [2022-03-01 15:00:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:09,951 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 7716 transitions. [2022-03-01 15:00:09,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 7716 transitions. [2022-03-01 15:00:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:09,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:09,955 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] [2022-03-01 15:00:09,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-01 15:00:09,955 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1616937819, now seen corresponding path program 12 times [2022-03-01 15:00:09,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:09,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061262582] [2022-03-01 15:00:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:10,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:10,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061262582] [2022-03-01 15:00:10,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061262582] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:10,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:10,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:10,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810624701] [2022-03-01 15:00:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:10,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:10,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:10,533 INFO L87 Difference]: Start difference. First operand 3759 states and 7716 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:16,362 INFO L93 Difference]: Finished difference Result 5031 states and 10326 transitions. [2022-03-01 15:00:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:00:16,363 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:16,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:16,368 INFO L225 Difference]: With dead ends: 5031 [2022-03-01 15:00:16,368 INFO L226 Difference]: Without dead ends: 5031 [2022-03-01 15:00:16,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1433, Invalid=4117, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:00:16,371 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1242 mSDsluCounter, 4070 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:16,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 4417 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:00:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2022-03-01 15:00:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 3763. [2022-03-01 15:00:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3760 states have (on average 2.054255319148936) internal successors, (7724), 3762 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 7724 transitions. [2022-03-01 15:00:16,418 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 7724 transitions. Word has length 96 [2022-03-01 15:00:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:16,418 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 7724 transitions. [2022-03-01 15:00:16,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:16,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 7724 transitions. [2022-03-01 15:00:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:16,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:16,422 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] [2022-03-01 15:00:16,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-01 15:00:16,422 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:16,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 767123629, now seen corresponding path program 13 times [2022-03-01 15:00:16,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:16,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135499965] [2022-03-01 15:00:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:16,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:16,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135499965] [2022-03-01 15:00:16,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135499965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:16,927 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:16,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:16,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851897816] [2022-03-01 15:00:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:16,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:16,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:16,928 INFO L87 Difference]: Start difference. First operand 3763 states and 7724 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:22,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:22,789 INFO L93 Difference]: Finished difference Result 5020 states and 10303 transitions. [2022-03-01 15:00:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 15:00:22,789 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:22,796 INFO L225 Difference]: With dead ends: 5020 [2022-03-01 15:00:22,797 INFO L226 Difference]: Without dead ends: 5020 [2022-03-01 15:00:22,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1535, Invalid=4471, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:00:22,805 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1448 mSDsluCounter, 4477 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 4815 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:22,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 4815 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:00:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2022-03-01 15:00:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 3764. [2022-03-01 15:00:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3761 states have (on average 2.0542408933794203) internal successors, (7726), 3763 states have internal predecessors, (7726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 7726 transitions. [2022-03-01 15:00:22,906 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 7726 transitions. Word has length 96 [2022-03-01 15:00:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:22,906 INFO L470 AbstractCegarLoop]: Abstraction has 3764 states and 7726 transitions. [2022-03-01 15:00:22,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 7726 transitions. [2022-03-01 15:00:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:22,925 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:22,925 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] [2022-03-01 15:00:22,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-01 15:00:22,926 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:22,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:22,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1758551059, now seen corresponding path program 14 times [2022-03-01 15:00:22,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:22,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251760865] [2022-03-01 15:00:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:22,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:23,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:23,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251760865] [2022-03-01 15:00:23,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251760865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:23,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:23,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:23,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939220553] [2022-03-01 15:00:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:23,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:23,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:23,550 INFO L87 Difference]: Start difference. First operand 3764 states and 7726 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:29,285 INFO L93 Difference]: Finished difference Result 5071 states and 10407 transitions. [2022-03-01 15:00:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:00:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:29,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:29,290 INFO L225 Difference]: With dead ends: 5071 [2022-03-01 15:00:29,290 INFO L226 Difference]: Without dead ends: 5071 [2022-03-01 15:00:29,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1386, Invalid=3444, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 15:00:29,291 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1426 mSDsluCounter, 3776 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:29,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 4127 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:00:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2022-03-01 15:00:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 3793. [2022-03-01 15:00:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 3790 states have (on average 2.054353562005277) internal successors, (7786), 3792 states have internal predecessors, (7786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 7786 transitions. [2022-03-01 15:00:29,333 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 7786 transitions. Word has length 96 [2022-03-01 15:00:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:29,334 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 7786 transitions. [2022-03-01 15:00:29,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 7786 transitions. [2022-03-01 15:00:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:29,337 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:29,337 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] [2022-03-01 15:00:29,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-01 15:00:29,338 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash 166928083, now seen corresponding path program 15 times [2022-03-01 15:00:29,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:29,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183180465] [2022-03-01 15:00:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:29,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:29,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183180465] [2022-03-01 15:00:29,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183180465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:29,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:29,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:29,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010296206] [2022-03-01 15:00:29,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:29,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:29,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:29,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:29,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:29,808 INFO L87 Difference]: Start difference. First operand 3793 states and 7786 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:34,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:34,793 INFO L93 Difference]: Finished difference Result 4969 states and 10189 transitions. [2022-03-01 15:00:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:00:34,794 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:34,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:34,799 INFO L225 Difference]: With dead ends: 4969 [2022-03-01 15:00:34,799 INFO L226 Difference]: Without dead ends: 4969 [2022-03-01 15:00:34,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1215, Invalid=3615, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 15:00:34,800 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1263 mSDsluCounter, 5145 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 5497 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:34,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 5497 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:00:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2022-03-01 15:00:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 3845. [2022-03-01 15:00:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3842 states have (on average 2.0533576262363353) internal successors, (7889), 3844 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 7889 transitions. [2022-03-01 15:00:34,861 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 7889 transitions. Word has length 96 [2022-03-01 15:00:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:34,862 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 7889 transitions. [2022-03-01 15:00:34,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 7889 transitions. [2022-03-01 15:00:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:34,865 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:34,865 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] [2022-03-01 15:00:34,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-01 15:00:34,866 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash -682886107, now seen corresponding path program 16 times [2022-03-01 15:00:34,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:34,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362704511] [2022-03-01 15:00:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:34,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:35,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:35,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362704511] [2022-03-01 15:00:35,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362704511] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:35,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:35,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:35,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100597103] [2022-03-01 15:00:35,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:35,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:35,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:35,351 INFO L87 Difference]: Start difference. First operand 3845 states and 7889 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:40,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:40,713 INFO L93 Difference]: Finished difference Result 4983 states and 10216 transitions. [2022-03-01 15:00:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:00:40,714 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:40,742 INFO L225 Difference]: With dead ends: 4983 [2022-03-01 15:00:40,742 INFO L226 Difference]: Without dead ends: 4983 [2022-03-01 15:00:40,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1326, Invalid=3930, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 15:00:40,743 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1316 mSDsluCounter, 3919 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 4262 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:40,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 4262 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:00:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2022-03-01 15:00:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 3846. [2022-03-01 15:00:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3843 states have (on average 2.053343741868332) internal successors, (7891), 3845 states have internal predecessors, (7891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 7891 transitions. [2022-03-01 15:00:40,785 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 7891 transitions. Word has length 96 [2022-03-01 15:00:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:40,786 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 7891 transitions. [2022-03-01 15:00:40,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 7891 transitions. [2022-03-01 15:00:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:40,789 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:40,789 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] [2022-03-01 15:00:40,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-01 15:00:40,789 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:40,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1086406501, now seen corresponding path program 17 times [2022-03-01 15:00:40,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:40,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448645465] [2022-03-01 15:00:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:40,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:41,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:41,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448645465] [2022-03-01 15:00:41,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448645465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:41,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:41,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:41,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777455593] [2022-03-01 15:00:41,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:41,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:41,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:41,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:41,541 INFO L87 Difference]: Start difference. First operand 3846 states and 7891 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:46,778 INFO L93 Difference]: Finished difference Result 4952 states and 10153 transitions. [2022-03-01 15:00:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 15:00:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:46,783 INFO L225 Difference]: With dead ends: 4952 [2022-03-01 15:00:46,784 INFO L226 Difference]: Without dead ends: 4952 [2022-03-01 15:00:46,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1177, Invalid=2983, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 15:00:46,793 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1364 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:46,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 4052 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:00:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2022-03-01 15:00:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 3845. [2022-03-01 15:00:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3842 states have (on average 2.0486725663716814) internal successors, (7871), 3844 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 7871 transitions. [2022-03-01 15:00:46,899 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 7871 transitions. Word has length 96 [2022-03-01 15:00:46,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:46,899 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 7871 transitions. [2022-03-01 15:00:46,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 7871 transitions. [2022-03-01 15:00:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:46,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:46,915 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] [2022-03-01 15:00:46,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-01 15:00:46,916 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:46,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 518902163, now seen corresponding path program 18 times [2022-03-01 15:00:46,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:46,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064415362] [2022-03-01 15:00:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:47,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:47,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064415362] [2022-03-01 15:00:47,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064415362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:47,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:47,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:47,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199350831] [2022-03-01 15:00:47,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:47,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:47,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:47,441 INFO L87 Difference]: Start difference. First operand 3845 states and 7871 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:51,211 INFO L93 Difference]: Finished difference Result 4992 states and 10228 transitions. [2022-03-01 15:00:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 15:00:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:51,216 INFO L225 Difference]: With dead ends: 4992 [2022-03-01 15:00:51,216 INFO L226 Difference]: Without dead ends: 4992 [2022-03-01 15:00:51,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=841, Invalid=2941, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 15:00:51,217 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1106 mSDsluCounter, 4655 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 5016 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:51,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 5016 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:00:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2022-03-01 15:00:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 3863. [2022-03-01 15:00:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3860 states have (on average 2.0484455958549224) internal successors, (7907), 3862 states have internal predecessors, (7907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 7907 transitions. [2022-03-01 15:00:51,280 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 7907 transitions. Word has length 96 [2022-03-01 15:00:51,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:51,280 INFO L470 AbstractCegarLoop]: Abstraction has 3863 states and 7907 transitions. [2022-03-01 15:00:51,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:51,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 7907 transitions. [2022-03-01 15:00:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:51,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:51,284 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] [2022-03-01 15:00:51,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-01 15:00:51,284 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:51,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:51,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2006772525, now seen corresponding path program 19 times [2022-03-01 15:00:51,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:51,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304805066] [2022-03-01 15:00:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:51,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:51,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:51,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304805066] [2022-03-01 15:00:51,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304805066] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:51,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:51,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:00:51,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608110395] [2022-03-01 15:00:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:51,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:00:51,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:00:51,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:00:51,824 INFO L87 Difference]: Start difference. First operand 3863 states and 7907 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:00:57,072 INFO L93 Difference]: Finished difference Result 4928 states and 10097 transitions. [2022-03-01 15:00:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 15:00:57,072 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:00:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:00:57,077 INFO L225 Difference]: With dead ends: 4928 [2022-03-01 15:00:57,078 INFO L226 Difference]: Without dead ends: 4928 [2022-03-01 15:00:57,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1203, Invalid=3087, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 15:00:57,078 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1303 mSDsluCounter, 4662 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 5012 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:00:57,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 5012 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:00:57,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2022-03-01 15:00:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 3607. [2022-03-01 15:00:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3604 states have (on average 2.04661487236404) internal successors, (7376), 3606 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:00:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 7376 transitions. [2022-03-01 15:00:57,115 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 7376 transitions. Word has length 96 [2022-03-01 15:00:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:00:57,115 INFO L470 AbstractCegarLoop]: Abstraction has 3607 states and 7376 transitions. [2022-03-01 15:00:57,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:00:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 7376 transitions. [2022-03-01 15:00:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:00:57,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:00:57,118 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] [2022-03-01 15:00:57,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-01 15:00:57,119 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:00:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:00:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash -570917011, now seen corresponding path program 20 times [2022-03-01 15:00:57,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:00:57,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547970063] [2022-03-01 15:00:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:00:57,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:00:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:00:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:00:57,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:00:57,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547970063] [2022-03-01 15:00:57,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547970063] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:00:57,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:00:57,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-01 15:00:57,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807395589] [2022-03-01 15:00:57,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:00:57,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:00:57,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:00:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:00:57,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:00:57,536 INFO L87 Difference]: Start difference. First operand 3607 states and 7376 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:01:08,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:08,731 INFO L93 Difference]: Finished difference Result 5289 states and 10832 transitions. [2022-03-01 15:01:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-01 15:01:08,732 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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 [2022-03-01 15:01:08,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:08,737 INFO L225 Difference]: With dead ends: 5289 [2022-03-01 15:01:08,737 INFO L226 Difference]: Without dead ends: 5289 [2022-03-01 15:01:08,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=3739, Invalid=9143, Unknown=0, NotChecked=0, Total=12882 [2022-03-01 15:01:08,738 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 1403 mSDsluCounter, 5515 mSDsCounter, 0 mSdLazyCounter, 3206 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:08,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 5972 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:01:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2022-03-01 15:01:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 3544. [2022-03-01 15:01:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3541 states have (on average 2.0454673820954534) internal successors, (7243), 3543 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 7243 transitions. [2022-03-01 15:01:08,773 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 7243 transitions. Word has length 96 [2022-03-01 15:01:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:08,773 INFO L470 AbstractCegarLoop]: Abstraction has 3544 states and 7243 transitions. [2022-03-01 15:01:08,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:01:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 7243 transitions. [2022-03-01 15:01:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:08,776 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:08,776 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] [2022-03-01 15:01:08,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-01 15:01:08,776 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2037360013, now seen corresponding path program 21 times [2022-03-01 15:01:08,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:08,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138543453] [2022-03-01 15:01:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:09,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:09,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138543453] [2022-03-01 15:01:09,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138543453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:09,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:09,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-01 15:01:09,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684657568] [2022-03-01 15:01:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:09,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:01:09,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:01:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:01:09,275 INFO L87 Difference]: Start difference. First operand 3544 states and 7243 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:01:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:18,999 INFO L93 Difference]: Finished difference Result 4892 states and 9992 transitions. [2022-03-01 15:01:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-01 15:01:18,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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 [2022-03-01 15:01:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:19,004 INFO L225 Difference]: With dead ends: 4892 [2022-03-01 15:01:19,004 INFO L226 Difference]: Without dead ends: 4892 [2022-03-01 15:01:19,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=3334, Invalid=8222, Unknown=0, NotChecked=0, Total=11556 [2022-03-01 15:01:19,006 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1370 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:19,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 5068 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:01:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-03-01 15:01:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4008. [2022-03-01 15:01:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4005 states have (on average 2.0454431960049937) internal successors, (8192), 4007 states have internal predecessors, (8192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 8192 transitions. [2022-03-01 15:01:19,048 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 8192 transitions. Word has length 96 [2022-03-01 15:01:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:19,048 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 8192 transitions. [2022-03-01 15:01:19,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:01:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 8192 transitions. [2022-03-01 15:01:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:19,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:19,053 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] [2022-03-01 15:01:19,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-01 15:01:19,053 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash 155436657, now seen corresponding path program 22 times [2022-03-01 15:01:19,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:19,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888716855] [2022-03-01 15:01:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:19,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:19,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888716855] [2022-03-01 15:01:19,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888716855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:19,611 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:19,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:01:19,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751692183] [2022-03-01 15:01:19,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:19,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:01:19,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:01:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:01:19,612 INFO L87 Difference]: Start difference. First operand 4008 states and 8192 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:25,373 INFO L93 Difference]: Finished difference Result 5127 states and 10527 transitions. [2022-03-01 15:01:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:01:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:01:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:25,379 INFO L225 Difference]: With dead ends: 5127 [2022-03-01 15:01:25,379 INFO L226 Difference]: Without dead ends: 5127 [2022-03-01 15:01:25,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1451, Invalid=4249, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:01:25,380 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1190 mSDsluCounter, 4346 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 4684 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:25,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 4684 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:01:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2022-03-01 15:01:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 4232. [2022-03-01 15:01:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4229 states have (on average 2.0534405296760463) internal successors, (8684), 4231 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 8684 transitions. [2022-03-01 15:01:25,421 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 8684 transitions. Word has length 96 [2022-03-01 15:01:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:25,422 INFO L470 AbstractCegarLoop]: Abstraction has 4232 states and 8684 transitions. [2022-03-01 15:01:25,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 8684 transitions. [2022-03-01 15:01:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:25,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:25,425 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] [2022-03-01 15:01:25,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-01 15:01:25,425 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:25,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash 15000381, now seen corresponding path program 23 times [2022-03-01 15:01:25,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:25,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106434424] [2022-03-01 15:01:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:25,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:25,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:25,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106434424] [2022-03-01 15:01:25,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106434424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:25,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:25,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:01:25,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113074901] [2022-03-01 15:01:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:25,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:01:25,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:01:25,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:01:25,960 INFO L87 Difference]: Start difference. First operand 4232 states and 8684 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:31,459 INFO L93 Difference]: Finished difference Result 5124 states and 10515 transitions. [2022-03-01 15:01:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:01:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:01:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:31,466 INFO L225 Difference]: With dead ends: 5124 [2022-03-01 15:01:31,466 INFO L226 Difference]: Without dead ends: 5124 [2022-03-01 15:01:31,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1432, Invalid=4118, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:01:31,467 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1267 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:31,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 5191 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:01:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2022-03-01 15:01:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 4236. [2022-03-01 15:01:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4236 states, 4233 states have (on average 2.0533900307110797) internal successors, (8692), 4235 states have internal predecessors, (8692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 8692 transitions. [2022-03-01 15:01:31,508 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 8692 transitions. Word has length 96 [2022-03-01 15:01:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:31,508 INFO L470 AbstractCegarLoop]: Abstraction has 4236 states and 8692 transitions. [2022-03-01 15:01:31,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 8692 transitions. [2022-03-01 15:01:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:31,512 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:31,512 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] [2022-03-01 15:01:31,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-01 15:01:31,512 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:31,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -834813809, now seen corresponding path program 24 times [2022-03-01 15:01:31,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:31,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366443301] [2022-03-01 15:01:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:31,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:31,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366443301] [2022-03-01 15:01:31,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366443301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:31,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:31,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:01:31,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527488971] [2022-03-01 15:01:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:31,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:01:31,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:01:31,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:01:31,920 INFO L87 Difference]: Start difference. First operand 4236 states and 8692 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:37,212 INFO L93 Difference]: Finished difference Result 5113 states and 10492 transitions. [2022-03-01 15:01:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 15:01:37,213 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:01:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:37,218 INFO L225 Difference]: With dead ends: 5113 [2022-03-01 15:01:37,219 INFO L226 Difference]: Without dead ends: 5113 [2022-03-01 15:01:37,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1534, Invalid=4472, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:01:37,219 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1205 mSDsluCounter, 4816 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 5147 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:37,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 5147 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:01:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5113 states. [2022-03-01 15:01:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5113 to 4237. [2022-03-01 15:01:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4234 states have (on average 2.053377420878602) internal successors, (8694), 4236 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 8694 transitions. [2022-03-01 15:01:37,263 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 8694 transitions. Word has length 96 [2022-03-01 15:01:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:37,263 INFO L470 AbstractCegarLoop]: Abstraction has 4237 states and 8694 transitions. [2022-03-01 15:01:37,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 8694 transitions. [2022-03-01 15:01:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:37,267 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:37,267 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] [2022-03-01 15:01:37,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-01 15:01:37,267 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:37,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash 934478799, now seen corresponding path program 25 times [2022-03-01 15:01:37,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:37,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815474614] [2022-03-01 15:01:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:38,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:38,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815474614] [2022-03-01 15:01:38,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815474614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:38,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:38,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:01:38,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241637863] [2022-03-01 15:01:38,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:38,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:01:38,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:38,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:01:38,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:01:38,139 INFO L87 Difference]: Start difference. First operand 4237 states and 8694 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:43,625 INFO L93 Difference]: Finished difference Result 5118 states and 10502 transitions. [2022-03-01 15:01:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:01:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:01:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:43,631 INFO L225 Difference]: With dead ends: 5118 [2022-03-01 15:01:43,631 INFO L226 Difference]: Without dead ends: 5118 [2022-03-01 15:01:43,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1384, Invalid=3446, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 15:01:43,632 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1535 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 3875 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:43,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 3875 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:01:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2022-03-01 15:01:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 4240. [2022-03-01 15:01:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4240 states, 4237 states have (on average 2.0533396270946422) internal successors, (8700), 4239 states have internal predecessors, (8700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 8700 transitions. [2022-03-01 15:01:43,671 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 8700 transitions. Word has length 96 [2022-03-01 15:01:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:43,671 INFO L470 AbstractCegarLoop]: Abstraction has 4240 states and 8700 transitions. [2022-03-01 15:01:43,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 8700 transitions. [2022-03-01 15:01:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:43,675 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:43,675 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] [2022-03-01 15:01:43,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-01 15:01:43,675 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:43,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1435009355, now seen corresponding path program 26 times [2022-03-01 15:01:43,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:43,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846542562] [2022-03-01 15:01:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:44,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:44,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846542562] [2022-03-01 15:01:44,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846542562] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:44,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:44,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:01:44,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714506072] [2022-03-01 15:01:44,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:44,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:01:44,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:44,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:01:44,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:01:44,185 INFO L87 Difference]: Start difference. First operand 4240 states and 8700 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:48,998 INFO L93 Difference]: Finished difference Result 5036 states and 10324 transitions. [2022-03-01 15:01:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:01:48,999 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:01:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:49,004 INFO L225 Difference]: With dead ends: 5036 [2022-03-01 15:01:49,004 INFO L226 Difference]: Without dead ends: 5036 [2022-03-01 15:01:49,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 15:01:49,004 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1206 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 4885 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:49,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 4885 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:01:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-03-01 15:01:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4292. [2022-03-01 15:01:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4289 states have (on average 2.0524597808346936) internal successors, (8803), 4291 states have internal predecessors, (8803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 8803 transitions. [2022-03-01 15:01:49,042 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 8803 transitions. Word has length 96 [2022-03-01 15:01:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:49,042 INFO L470 AbstractCegarLoop]: Abstraction has 4292 states and 8803 transitions. [2022-03-01 15:01:49,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 8803 transitions. [2022-03-01 15:01:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:49,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:49,046 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] [2022-03-01 15:01:49,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-01 15:01:49,046 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2010143751, now seen corresponding path program 27 times [2022-03-01 15:01:49,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:49,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982619205] [2022-03-01 15:01:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:49,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:49,558 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:49,558 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982619205] [2022-03-01 15:01:49,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982619205] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:49,558 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:49,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:01:49,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219672926] [2022-03-01 15:01:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:49,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:01:49,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:01:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:01:49,559 INFO L87 Difference]: Start difference. First operand 4292 states and 8803 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:54,433 INFO L93 Difference]: Finished difference Result 5056 states and 10363 transitions. [2022-03-01 15:01:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:01:54,434 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:01:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:54,439 INFO L225 Difference]: With dead ends: 5056 [2022-03-01 15:01:54,439 INFO L226 Difference]: Without dead ends: 5056 [2022-03-01 15:01:54,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1325, Invalid=3931, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 15:01:54,440 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1220 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:54,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 4818 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:01:54,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-03-01 15:01:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 4293. [2022-03-01 15:01:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4293 states, 4290 states have (on average 2.0524475524475525) internal successors, (8805), 4292 states have internal predecessors, (8805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4293 states to 4293 states and 8805 transitions. [2022-03-01 15:01:54,505 INFO L78 Accepts]: Start accepts. Automaton has 4293 states and 8805 transitions. Word has length 96 [2022-03-01 15:01:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:54,506 INFO L470 AbstractCegarLoop]: Abstraction has 4293 states and 8805 transitions. [2022-03-01 15:01:54,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4293 states and 8805 transitions. [2022-03-01 15:01:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:54,509 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:54,509 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] [2022-03-01 15:01:54,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-01 15:01:54,509 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash -515530937, now seen corresponding path program 28 times [2022-03-01 15:01:54,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:54,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230520007] [2022-03-01 15:01:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:01:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:01:55,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:01:55,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230520007] [2022-03-01 15:01:55,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230520007] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:01:55,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:01:55,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:01:55,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677701745] [2022-03-01 15:01:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:01:55,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:01:55,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:01:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:01:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:01:55,031 INFO L87 Difference]: Start difference. First operand 4293 states and 8805 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:01:59,842 INFO L93 Difference]: Finished difference Result 5019 states and 10288 transitions. [2022-03-01 15:01:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-01 15:01:59,842 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:01:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:01:59,848 INFO L225 Difference]: With dead ends: 5019 [2022-03-01 15:01:59,848 INFO L226 Difference]: Without dead ends: 5019 [2022-03-01 15:01:59,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1178, Invalid=2982, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 15:01:59,849 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1189 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:01:59,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 3971 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 15:01:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5019 states. [2022-03-01 15:01:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5019 to 4378. [2022-03-01 15:01:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 4375 states have (on average 2.0541714285714288) internal successors, (8987), 4377 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:01:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 8987 transitions. [2022-03-01 15:01:59,895 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 8987 transitions. Word has length 96 [2022-03-01 15:01:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:01:59,895 INFO L470 AbstractCegarLoop]: Abstraction has 4378 states and 8987 transitions. [2022-03-01 15:01:59,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:01:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 8987 transitions. [2022-03-01 15:01:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:01:59,898 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:01:59,905 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] [2022-03-01 15:01:59,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-01 15:01:59,905 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:01:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:01:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1083035275, now seen corresponding path program 29 times [2022-03-01 15:01:59,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:01:59,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683292553] [2022-03-01 15:01:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:01:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:01:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:00,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:00,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683292553] [2022-03-01 15:02:00,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683292553] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:00,387 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:00,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:02:00,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663686785] [2022-03-01 15:02:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:00,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:02:00,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:02:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:02:00,389 INFO L87 Difference]: Start difference. First operand 4378 states and 8987 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:02:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:03,696 INFO L93 Difference]: Finished difference Result 5097 states and 10445 transitions. [2022-03-01 15:02:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-01 15:02:03,696 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:02:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:03,702 INFO L225 Difference]: With dead ends: 5097 [2022-03-01 15:02:03,702 INFO L226 Difference]: Without dead ends: 5097 [2022-03-01 15:02:03,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=840, Invalid=2942, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 15:02:03,703 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 1183 mSDsluCounter, 4526 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:03,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 4880 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 15:02:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2022-03-01 15:02:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4396. [2022-03-01 15:02:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4393 states have (on average 2.053949465058047) internal successors, (9023), 4395 states have internal predecessors, (9023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 9023 transitions. [2022-03-01 15:02:03,756 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 9023 transitions. Word has length 96 [2022-03-01 15:02:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:03,771 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 9023 transitions. [2022-03-01 15:02:03,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:02:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 9023 transitions. [2022-03-01 15:02:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:02:03,775 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:03,776 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] [2022-03-01 15:02:03,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-01 15:02:03,776 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:03,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash 686257333, now seen corresponding path program 30 times [2022-03-01 15:02:03,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:03,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151874011] [2022-03-01 15:02:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:04,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:04,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151874011] [2022-03-01 15:02:04,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151874011] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:04,493 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:04,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:02:04,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226440323] [2022-03-01 15:02:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:04,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:02:04,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:02:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:02:04,494 INFO L87 Difference]: Start difference. First operand 4396 states and 9023 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:02:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:09,295 INFO L93 Difference]: Finished difference Result 5053 states and 10356 transitions. [2022-03-01 15:02:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 15:02:09,295 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:02:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:09,300 INFO L225 Difference]: With dead ends: 5053 [2022-03-01 15:02:09,300 INFO L226 Difference]: Without dead ends: 5053 [2022-03-01 15:02:09,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1202, Invalid=3088, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 15:02:09,301 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1224 mSDsluCounter, 4197 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:09,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 4540 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 15:02:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5053 states. [2022-03-01 15:02:09,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5053 to 4080. [2022-03-01 15:02:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4077 states have (on average 2.0466028942850136) internal successors, (8344), 4079 states have internal predecessors, (8344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 8344 transitions. [2022-03-01 15:02:09,339 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 8344 transitions. Word has length 96 [2022-03-01 15:02:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:09,339 INFO L470 AbstractCegarLoop]: Abstraction has 4080 states and 8344 transitions. [2022-03-01 15:02:09,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:02:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 8344 transitions. [2022-03-01 15:02:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:02:09,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:09,342 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] [2022-03-01 15:02:09,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-01 15:02:09,342 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2122112847, now seen corresponding path program 31 times [2022-03-01 15:02:09,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:09,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409323665] [2022-03-01 15:02:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:09,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:09,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409323665] [2022-03-01 15:02:09,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409323665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:09,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:09,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-01 15:02:09,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426517076] [2022-03-01 15:02:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:09,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:02:09,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:09,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:02:09,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:02:09,780 INFO L87 Difference]: Start difference. First operand 4080 states and 8344 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:02:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:13,936 INFO L93 Difference]: Finished difference Result 5029 states and 10300 transitions. [2022-03-01 15:02:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 15:02:13,937 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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 [2022-03-01 15:02:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:13,942 INFO L225 Difference]: With dead ends: 5029 [2022-03-01 15:02:13,942 INFO L226 Difference]: Without dead ends: 5029 [2022-03-01 15:02:13,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1251, Invalid=3039, Unknown=0, NotChecked=0, Total=4290 [2022-03-01 15:02:13,943 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1226 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 4115 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:13,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 4115 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 15:02:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2022-03-01 15:02:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 4017. [2022-03-01 15:02:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 4014 states have (on average 2.0455904334828103) internal successors, (8211), 4016 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 8211 transitions. [2022-03-01 15:02:14,018 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 8211 transitions. Word has length 96 [2022-03-01 15:02:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 4017 states and 8211 transitions. [2022-03-01 15:02:14,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:02:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 8211 transitions. [2022-03-01 15:02:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:02:14,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:14,021 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] [2022-03-01 15:02:14,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-01 15:02:14,022 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash 435422575, now seen corresponding path program 32 times [2022-03-01 15:02:14,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:14,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832408184] [2022-03-01 15:02:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:14,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:14,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:14,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832408184] [2022-03-01 15:02:14,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832408184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:14,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:14,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-01 15:02:14,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802114255] [2022-03-01 15:02:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:14,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 15:02:14,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 15:02:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-03-01 15:02:14,549 INFO L87 Difference]: Start difference. First operand 4017 states and 8211 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:02:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:24,346 INFO L93 Difference]: Finished difference Result 5448 states and 11154 transitions. [2022-03-01 15:02:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-01 15:02:24,346 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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 [2022-03-01 15:02:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:24,351 INFO L225 Difference]: With dead ends: 5448 [2022-03-01 15:02:24,351 INFO L226 Difference]: Without dead ends: 5448 [2022-03-01 15:02:24,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2459 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4244, Invalid=10518, Unknown=0, NotChecked=0, Total=14762 [2022-03-01 15:02:24,352 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 1341 mSDsluCounter, 4611 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 5070 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:24,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 5070 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:02:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5448 states. [2022-03-01 15:02:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5448 to 4021. [2022-03-01 15:02:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4021 states, 4018 states have (on average 2.0455450472872077) internal successors, (8219), 4020 states have internal predecessors, (8219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 8219 transitions. [2022-03-01 15:02:24,390 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 8219 transitions. Word has length 96 [2022-03-01 15:02:24,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:24,390 INFO L470 AbstractCegarLoop]: Abstraction has 4021 states and 8219 transitions. [2022-03-01 15:02:24,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 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) [2022-03-01 15:02:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 8219 transitions. [2022-03-01 15:02:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 15:02:24,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:24,393 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] [2022-03-01 15:02:24,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-01 15:02:24,394 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:24,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1424536301, now seen corresponding path program 33 times [2022-03-01 15:02:24,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:24,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965606150] [2022-03-01 15:02:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:24,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:24,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965606150] [2022-03-01 15:02:24,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965606150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:24,940 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:24,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-01 15:02:24,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49520514] [2022-03-01 15:02:24,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:24,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 15:02:24,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 15:02:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-03-01 15:02:24,941 INFO L87 Difference]: Start difference. First operand 4021 states and 8219 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:02:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:33,378 INFO L93 Difference]: Finished difference Result 5006 states and 10223 transitions. [2022-03-01 15:02:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-01 15:02:33,379 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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 [2022-03-01 15:02:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:33,383 INFO L225 Difference]: With dead ends: 5006 [2022-03-01 15:02:33,383 INFO L226 Difference]: Without dead ends: 5006 [2022-03-01 15:02:33,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2220 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3778, Invalid=9562, Unknown=0, NotChecked=0, Total=13340 [2022-03-01 15:02:33,385 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1449 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 3711 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:33,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 3711 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 15:02:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2022-03-01 15:02:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 3643. [2022-03-01 15:02:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 3640 states have (on average 2.045054945054945) internal successors, (7444), 3642 states have internal predecessors, (7444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 7444 transitions. [2022-03-01 15:02:33,424 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 7444 transitions. Word has length 96 [2022-03-01 15:02:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:33,424 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 7444 transitions. [2022-03-01 15:02:33,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 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) [2022-03-01 15:02:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 7444 transitions. [2022-03-01 15:02:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:02:33,429 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:33,429 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] [2022-03-01 15:02:33,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-01 15:02:33,429 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1862634563, now seen corresponding path program 1 times [2022-03-01 15:02:33,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:33,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032204487] [2022-03-01 15:02:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:34,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:34,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032204487] [2022-03-01 15:02:34,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032204487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:34,079 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:34,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:02:34,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661705828] [2022-03-01 15:02:34,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:34,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:02:34,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:02:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:02:34,080 INFO L87 Difference]: Start difference. First operand 3643 states and 7444 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:02:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:37,622 INFO L93 Difference]: Finished difference Result 5464 states and 11215 transitions. [2022-03-01 15:02:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:02:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:02:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:37,627 INFO L225 Difference]: With dead ends: 5464 [2022-03-01 15:02:37,628 INFO L226 Difference]: Without dead ends: 5464 [2022-03-01 15:02:37,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=961, Invalid=4739, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:02:37,628 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 2005 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 8738 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:37,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 8738 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:02:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2022-03-01 15:02:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 5048. [2022-03-01 15:02:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5045 states have (on average 2.050148662041625) internal successors, (10343), 5047 states have internal predecessors, (10343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 10343 transitions. [2022-03-01 15:02:37,671 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 10343 transitions. Word has length 99 [2022-03-01 15:02:37,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:37,671 INFO L470 AbstractCegarLoop]: Abstraction has 5048 states and 10343 transitions. [2022-03-01 15:02:37,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:02:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 10343 transitions. [2022-03-01 15:02:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:02:37,674 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:37,674 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] [2022-03-01 15:02:37,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-01 15:02:37,687 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1955278075, now seen corresponding path program 2 times [2022-03-01 15:02:37,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:37,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649562566] [2022-03-01 15:02:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:38,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:38,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649562566] [2022-03-01 15:02:38,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649562566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:38,259 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:38,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:02:38,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419769119] [2022-03-01 15:02:38,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:38,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:02:38,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:38,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:02:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:02:38,259 INFO L87 Difference]: Start difference. First operand 5048 states and 10343 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:41,777 INFO L93 Difference]: Finished difference Result 7788 states and 15985 transitions. [2022-03-01 15:02:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:02:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:02:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:41,785 INFO L225 Difference]: With dead ends: 7788 [2022-03-01 15:02:41,785 INFO L226 Difference]: Without dead ends: 7788 [2022-03-01 15:02:41,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1052, Invalid=4954, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:02:41,786 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1601 mSDsluCounter, 10310 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 10890 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:41,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 10890 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:02:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7788 states. [2022-03-01 15:02:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 5108. [2022-03-01 15:02:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5108 states, 5105 states have (on average 2.049951028403526) internal successors, (10465), 5107 states have internal predecessors, (10465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 10465 transitions. [2022-03-01 15:02:41,841 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 10465 transitions. Word has length 99 [2022-03-01 15:02:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:41,841 INFO L470 AbstractCegarLoop]: Abstraction has 5108 states and 10465 transitions. [2022-03-01 15:02:41,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:41,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 10465 transitions. [2022-03-01 15:02:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:02:41,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:41,845 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] [2022-03-01 15:02:41,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-01 15:02:41,846 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash -748108651, now seen corresponding path program 3 times [2022-03-01 15:02:41,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:41,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553193645] [2022-03-01 15:02:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:42,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:42,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553193645] [2022-03-01 15:02:42,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553193645] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:42,633 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:42,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:02:42,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018838099] [2022-03-01 15:02:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:42,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:02:42,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:02:42,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:02:42,634 INFO L87 Difference]: Start difference. First operand 5108 states and 10465 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:46,246 INFO L93 Difference]: Finished difference Result 6756 states and 13854 transitions. [2022-03-01 15:02:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:02:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:02:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:46,252 INFO L225 Difference]: With dead ends: 6756 [2022-03-01 15:02:46,252 INFO L226 Difference]: Without dead ends: 6756 [2022-03-01 15:02:46,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=941, Invalid=4609, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:02:46,253 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1547 mSDsluCounter, 10034 mSDsCounter, 0 mSdLazyCounter, 3765 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 10596 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:46,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 10596 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3765 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:02:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6756 states. [2022-03-01 15:02:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6756 to 5108. [2022-03-01 15:02:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5108 states, 5105 states have (on average 2.049951028403526) internal successors, (10465), 5107 states have internal predecessors, (10465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 10465 transitions. [2022-03-01 15:02:46,298 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 10465 transitions. Word has length 99 [2022-03-01 15:02:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:46,299 INFO L470 AbstractCegarLoop]: Abstraction has 5108 states and 10465 transitions. [2022-03-01 15:02:46,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 10465 transitions. [2022-03-01 15:02:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:02:46,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:46,303 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] [2022-03-01 15:02:46,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-01 15:02:46,303 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash 547132675, now seen corresponding path program 4 times [2022-03-01 15:02:46,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:46,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736716362] [2022-03-01 15:02:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:47,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:47,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736716362] [2022-03-01 15:02:47,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736716362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:47,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:47,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:02:47,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883158895] [2022-03-01 15:02:47,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:47,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:02:47,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:02:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:02:47,016 INFO L87 Difference]: Start difference. First operand 5108 states and 10465 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:50,331 INFO L93 Difference]: Finished difference Result 6841 states and 14041 transitions. [2022-03-01 15:02:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:02:50,331 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:02:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:50,338 INFO L225 Difference]: With dead ends: 6841 [2022-03-01 15:02:50,338 INFO L226 Difference]: Without dead ends: 6841 [2022-03-01 15:02:50,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:02:50,339 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1518 mSDsluCounter, 9542 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 10094 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:50,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1518 Valid, 10094 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:02:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2022-03-01 15:02:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 5125. [2022-03-01 15:02:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5122 states have (on average 2.04978524014057) internal successors, (10499), 5124 states have internal predecessors, (10499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 10499 transitions. [2022-03-01 15:02:50,390 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 10499 transitions. Word has length 99 [2022-03-01 15:02:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:50,390 INFO L470 AbstractCegarLoop]: Abstraction has 5125 states and 10499 transitions. [2022-03-01 15:02:50,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 10499 transitions. [2022-03-01 15:02:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:02:50,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:50,394 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] [2022-03-01 15:02:50,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-01 15:02:50,394 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:50,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:50,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2078168209, now seen corresponding path program 5 times [2022-03-01 15:02:50,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:50,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968043298] [2022-03-01 15:02:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:51,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:51,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968043298] [2022-03-01 15:02:51,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968043298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:51,226 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:51,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:02:51,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912751268] [2022-03-01 15:02:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:51,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:02:51,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:02:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:02:51,227 INFO L87 Difference]: Start difference. First operand 5125 states and 10499 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:54,383 INFO L93 Difference]: Finished difference Result 6892 states and 14143 transitions. [2022-03-01 15:02:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:02:54,384 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:02:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:54,391 INFO L225 Difference]: With dead ends: 6892 [2022-03-01 15:02:54,391 INFO L226 Difference]: Without dead ends: 6892 [2022-03-01 15:02:54,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:02:54,392 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 1724 mSDsluCounter, 8745 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 9296 SdHoareTripleChecker+Invalid, 3269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:54,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 9296 Invalid, 3269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:02:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6892 states. [2022-03-01 15:02:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6892 to 5159. [2022-03-01 15:02:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5156 states have (on average 2.049456943366951) internal successors, (10567), 5158 states have internal predecessors, (10567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 10567 transitions. [2022-03-01 15:02:54,442 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 10567 transitions. Word has length 99 [2022-03-01 15:02:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:54,442 INFO L470 AbstractCegarLoop]: Abstraction has 5159 states and 10567 transitions. [2022-03-01 15:02:54,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 10567 transitions. [2022-03-01 15:02:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:02:54,446 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:54,446 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] [2022-03-01 15:02:54,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-01 15:02:54,446 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -428458567, now seen corresponding path program 6 times [2022-03-01 15:02:54,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:54,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285683172] [2022-03-01 15:02:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:02:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:02:55,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:02:55,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285683172] [2022-03-01 15:02:55,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285683172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:02:55,063 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:02:55,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:02:55,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365413406] [2022-03-01 15:02:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:02:55,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:02:55,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:02:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:02:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:02:55,064 INFO L87 Difference]: Start difference. First operand 5159 states and 10567 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:02:59,562 INFO L93 Difference]: Finished difference Result 6977 states and 14313 transitions. [2022-03-01 15:02:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:02:59,563 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:02:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:02:59,571 INFO L225 Difference]: With dead ends: 6977 [2022-03-01 15:02:59,571 INFO L226 Difference]: Without dead ends: 6977 [2022-03-01 15:02:59,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:02:59,572 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1654 mSDsluCounter, 9251 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 9806 SdHoareTripleChecker+Invalid, 3669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:02:59,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 9806 Invalid, 3669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:02:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2022-03-01 15:02:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 5210. [2022-03-01 15:02:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 5207 states have (on average 2.048972536969464) internal successors, (10669), 5209 states have internal predecessors, (10669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:02:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 10669 transitions. [2022-03-01 15:02:59,654 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 10669 transitions. Word has length 99 [2022-03-01 15:02:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:02:59,655 INFO L470 AbstractCegarLoop]: Abstraction has 5210 states and 10669 transitions. [2022-03-01 15:02:59,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:02:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 10669 transitions. [2022-03-01 15:02:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:02:59,667 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:02:59,667 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] [2022-03-01 15:02:59,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-01 15:02:59,668 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:02:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:02:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1400360845, now seen corresponding path program 7 times [2022-03-01 15:02:59,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:02:59,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811817368] [2022-03-01 15:02:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:02:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:02:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:00,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:00,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811817368] [2022-03-01 15:03:00,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811817368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:00,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:00,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:00,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480282596] [2022-03-01 15:03:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:00,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:00,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:00,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:00,481 INFO L87 Difference]: Start difference. First operand 5210 states and 10669 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:03,887 INFO L93 Difference]: Finished difference Result 7045 states and 14449 transitions. [2022-03-01 15:03:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:03,887 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:03,895 INFO L225 Difference]: With dead ends: 7045 [2022-03-01 15:03:03,895 INFO L226 Difference]: Without dead ends: 7045 [2022-03-01 15:03:03,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:03,896 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1772 mSDsluCounter, 8904 mSDsCounter, 0 mSdLazyCounter, 3368 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 9461 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:03,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1772 Valid, 9461 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:03:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7045 states. [2022-03-01 15:03:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7045 to 5227. [2022-03-01 15:03:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5224 states have (on average 2.048813169984686) internal successors, (10703), 5226 states have internal predecessors, (10703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 10703 transitions. [2022-03-01 15:03:03,953 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 10703 transitions. Word has length 99 [2022-03-01 15:03:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:03,953 INFO L470 AbstractCegarLoop]: Abstraction has 5227 states and 10703 transitions. [2022-03-01 15:03:03,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 10703 transitions. [2022-03-01 15:03:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:03,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:03,957 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] [2022-03-01 15:03:03,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-01 15:03:03,958 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1762139035, now seen corresponding path program 8 times [2022-03-01 15:03:03,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:03,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153823116] [2022-03-01 15:03:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:04,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:04,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153823116] [2022-03-01 15:03:04,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153823116] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:04,705 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:04,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:04,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947374628] [2022-03-01 15:03:04,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:04,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:04,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:04,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:04,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:04,706 INFO L87 Difference]: Start difference. First operand 5227 states and 10703 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:08,614 INFO L93 Difference]: Finished difference Result 7079 states and 14517 transitions. [2022-03-01 15:03:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:08,614 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:08,622 INFO L225 Difference]: With dead ends: 7079 [2022-03-01 15:03:08,622 INFO L226 Difference]: Without dead ends: 7079 [2022-03-01 15:03:08,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:08,623 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1483 mSDsluCounter, 10662 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 11220 SdHoareTripleChecker+Invalid, 4109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:08,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 11220 Invalid, 4109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4078 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:03:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2022-03-01 15:03:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 5244. [2022-03-01 15:03:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5244 states, 5241 states have (on average 2.048654836863194) internal successors, (10737), 5243 states have internal predecessors, (10737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5244 states to 5244 states and 10737 transitions. [2022-03-01 15:03:08,676 INFO L78 Accepts]: Start accepts. Automaton has 5244 states and 10737 transitions. Word has length 99 [2022-03-01 15:03:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:08,676 INFO L470 AbstractCegarLoop]: Abstraction has 5244 states and 10737 transitions. [2022-03-01 15:03:08,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5244 states and 10737 transitions. [2022-03-01 15:03:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:08,694 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:08,695 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] [2022-03-01 15:03:08,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-01 15:03:08,695 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1514557837, now seen corresponding path program 9 times [2022-03-01 15:03:08,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:08,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930754249] [2022-03-01 15:03:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:08,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:09,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:09,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930754249] [2022-03-01 15:03:09,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930754249] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:09,467 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:09,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:09,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144334930] [2022-03-01 15:03:09,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:09,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:09,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:09,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:09,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:09,467 INFO L87 Difference]: Start difference. First operand 5244 states and 10737 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:12,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:12,851 INFO L93 Difference]: Finished difference Result 7147 states and 14653 transitions. [2022-03-01 15:03:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:12,851 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:12,859 INFO L225 Difference]: With dead ends: 7147 [2022-03-01 15:03:12,859 INFO L226 Difference]: Without dead ends: 7147 [2022-03-01 15:03:12,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:12,860 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1555 mSDsluCounter, 9367 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 9927 SdHoareTripleChecker+Invalid, 3513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:12,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 9927 Invalid, 3513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:03:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2022-03-01 15:03:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 5295. [2022-03-01 15:03:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5292 states have (on average 2.048185941043084) internal successors, (10839), 5294 states have internal predecessors, (10839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 10839 transitions. [2022-03-01 15:03:12,916 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 10839 transitions. Word has length 99 [2022-03-01 15:03:12,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:12,916 INFO L470 AbstractCegarLoop]: Abstraction has 5295 states and 10839 transitions. [2022-03-01 15:03:12,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 10839 transitions. [2022-03-01 15:03:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:12,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:12,920 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] [2022-03-01 15:03:12,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-01 15:03:12,920 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1227029339, now seen corresponding path program 10 times [2022-03-01 15:03:12,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:12,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968022529] [2022-03-01 15:03:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:12,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:13,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:13,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968022529] [2022-03-01 15:03:13,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968022529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:13,836 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:13,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:13,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765254337] [2022-03-01 15:03:13,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:13,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:13,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:13,837 INFO L87 Difference]: Start difference. First operand 5295 states and 10839 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:17,798 INFO L93 Difference]: Finished difference Result 6858 states and 14058 transitions. [2022-03-01 15:03:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:17,806 INFO L225 Difference]: With dead ends: 6858 [2022-03-01 15:03:17,806 INFO L226 Difference]: Without dead ends: 6858 [2022-03-01 15:03:17,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:17,808 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1617 mSDsluCounter, 10051 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 10616 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:17,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 10616 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:03:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6858 states. [2022-03-01 15:03:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6858 to 5125. [2022-03-01 15:03:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5122 states have (on average 2.04978524014057) internal successors, (10499), 5124 states have internal predecessors, (10499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 10499 transitions. [2022-03-01 15:03:17,853 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 10499 transitions. Word has length 99 [2022-03-01 15:03:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:17,853 INFO L470 AbstractCegarLoop]: Abstraction has 5125 states and 10499 transitions. [2022-03-01 15:03:17,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 10499 transitions. [2022-03-01 15:03:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:17,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:17,857 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] [2022-03-01 15:03:17,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-01 15:03:17,857 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1850403261, now seen corresponding path program 11 times [2022-03-01 15:03:17,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:17,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742879003] [2022-03-01 15:03:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:18,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:18,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742879003] [2022-03-01 15:03:18,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742879003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:18,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:18,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:18,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951708301] [2022-03-01 15:03:18,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:18,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:18,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:18,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:18,531 INFO L87 Difference]: Start difference. First operand 5125 states and 10499 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:22,631 INFO L93 Difference]: Finished difference Result 7364 states and 15127 transitions. [2022-03-01 15:03:22,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:22,631 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:22,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:22,639 INFO L225 Difference]: With dead ends: 7364 [2022-03-01 15:03:22,639 INFO L226 Difference]: Without dead ends: 7364 [2022-03-01 15:03:22,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:22,641 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1562 mSDsluCounter, 9283 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 9841 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:22,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 9841 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:03:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7364 states. [2022-03-01 15:03:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7364 to 5141. [2022-03-01 15:03:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5138 states have (on average 2.0500194628260022) internal successors, (10533), 5140 states have internal predecessors, (10533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 10533 transitions. [2022-03-01 15:03:22,690 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 10533 transitions. Word has length 99 [2022-03-01 15:03:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:22,690 INFO L470 AbstractCegarLoop]: Abstraction has 5141 states and 10533 transitions. [2022-03-01 15:03:22,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 10533 transitions. [2022-03-01 15:03:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:22,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:22,693 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] [2022-03-01 15:03:22,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-01 15:03:22,693 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1757759749, now seen corresponding path program 12 times [2022-03-01 15:03:22,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:22,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998360573] [2022-03-01 15:03:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:23,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:23,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998360573] [2022-03-01 15:03:23,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998360573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:23,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:23,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:23,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667887101] [2022-03-01 15:03:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:23,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:23,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:23,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:23,450 INFO L87 Difference]: Start difference. First operand 5141 states and 10533 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:27,456 INFO L93 Difference]: Finished difference Result 9404 states and 19335 transitions. [2022-03-01 15:03:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:03:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:27,465 INFO L225 Difference]: With dead ends: 9404 [2022-03-01 15:03:27,465 INFO L226 Difference]: Without dead ends: 9404 [2022-03-01 15:03:27,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:03:27,466 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1625 mSDsluCounter, 10225 mSDsCounter, 0 mSdLazyCounter, 3831 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 10829 SdHoareTripleChecker+Invalid, 3863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:27,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 10829 Invalid, 3863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3831 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:03:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2022-03-01 15:03:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 5143. [2022-03-01 15:03:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5140 states have (on average 2.05) internal successors, (10537), 5142 states have internal predecessors, (10537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 10537 transitions. [2022-03-01 15:03:27,546 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 10537 transitions. Word has length 99 [2022-03-01 15:03:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:27,546 INFO L470 AbstractCegarLoop]: Abstraction has 5143 states and 10537 transitions. [2022-03-01 15:03:27,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 10537 transitions. [2022-03-01 15:03:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:27,550 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:27,550 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] [2022-03-01 15:03:27,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-01 15:03:27,550 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1330038123, now seen corresponding path program 13 times [2022-03-01 15:03:27,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:27,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229989508] [2022-03-01 15:03:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:27,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:28,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:28,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229989508] [2022-03-01 15:03:28,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229989508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:28,156 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:28,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:28,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249249115] [2022-03-01 15:03:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:28,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:28,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:28,157 INFO L87 Difference]: Start difference. First operand 5143 states and 10537 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:32,556 INFO L93 Difference]: Finished difference Result 7446 states and 15293 transitions. [2022-03-01 15:03:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:32,557 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:32,568 INFO L225 Difference]: With dead ends: 7446 [2022-03-01 15:03:32,568 INFO L226 Difference]: Without dead ends: 7446 [2022-03-01 15:03:32,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:32,569 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1589 mSDsluCounter, 9159 mSDsCounter, 0 mSdLazyCounter, 3396 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 9731 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:32,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 9731 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3396 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:03:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7446 states. [2022-03-01 15:03:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7446 to 5125. [2022-03-01 15:03:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5122 states have (on average 2.04978524014057) internal successors, (10499), 5124 states have internal predecessors, (10499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 10499 transitions. [2022-03-01 15:03:32,629 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 10499 transitions. Word has length 99 [2022-03-01 15:03:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:32,629 INFO L470 AbstractCegarLoop]: Abstraction has 5125 states and 10499 transitions. [2022-03-01 15:03:32,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 10499 transitions. [2022-03-01 15:03:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:32,633 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:32,633 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] [2022-03-01 15:03:32,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-01 15:03:32,633 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 969706245, now seen corresponding path program 14 times [2022-03-01 15:03:32,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:32,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462791567] [2022-03-01 15:03:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:32,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:33,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:33,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462791567] [2022-03-01 15:03:33,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462791567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:33,349 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:33,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:33,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462885834] [2022-03-01 15:03:33,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:33,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:33,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:33,350 INFO L87 Difference]: Start difference. First operand 5125 states and 10499 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:37,660 INFO L93 Difference]: Finished difference Result 8431 states and 17299 transitions. [2022-03-01 15:03:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:03:37,660 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:37,669 INFO L225 Difference]: With dead ends: 8431 [2022-03-01 15:03:37,669 INFO L226 Difference]: Without dead ends: 8431 [2022-03-01 15:03:37,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1166, Invalid=5314, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 15:03:37,670 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1715 mSDsluCounter, 11451 mSDsCounter, 0 mSdLazyCounter, 4036 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 12048 SdHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:37,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 12048 Invalid, 4074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4036 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:03:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2022-03-01 15:03:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 5232. [2022-03-01 15:03:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5229 states have (on average 2.0493402180149167) internal successors, (10716), 5231 states have internal predecessors, (10716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 10716 transitions. [2022-03-01 15:03:37,751 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 10716 transitions. Word has length 99 [2022-03-01 15:03:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:37,751 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 10716 transitions. [2022-03-01 15:03:37,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 10716 transitions. [2022-03-01 15:03:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:37,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:37,754 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] [2022-03-01 15:03:37,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-01 15:03:37,754 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash 948513173, now seen corresponding path program 15 times [2022-03-01 15:03:37,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:37,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709954792] [2022-03-01 15:03:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:37,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:38,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:38,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709954792] [2022-03-01 15:03:38,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709954792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:38,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:38,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:38,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612948754] [2022-03-01 15:03:38,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:38,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:38,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:38,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:38,401 INFO L87 Difference]: Start difference. First operand 5232 states and 10716 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:42,285 INFO L93 Difference]: Finished difference Result 8399 states and 17230 transitions. [2022-03-01 15:03:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:03:42,286 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:42,296 INFO L225 Difference]: With dead ends: 8399 [2022-03-01 15:03:42,296 INFO L226 Difference]: Without dead ends: 8399 [2022-03-01 15:03:42,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1045, Invalid=4961, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:03:42,297 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1954 mSDsluCounter, 9386 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 9965 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:42,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 9965 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:03:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2022-03-01 15:03:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 5234. [2022-03-01 15:03:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5231 states have (on average 2.0493213534696997) internal successors, (10720), 5233 states have internal predecessors, (10720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 10720 transitions. [2022-03-01 15:03:42,355 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 10720 transitions. Word has length 99 [2022-03-01 15:03:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:42,355 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 10720 transitions. [2022-03-01 15:03:42,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:42,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 10720 transitions. [2022-03-01 15:03:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:42,358 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:42,358 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, 1, 1, 1] [2022-03-01 15:03:42,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-01 15:03:42,359 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash -885464299, now seen corresponding path program 16 times [2022-03-01 15:03:42,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:42,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157520388] [2022-03-01 15:03:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:42,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:42,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:42,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157520388] [2022-03-01 15:03:42,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157520388] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:42,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:42,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-01 15:03:42,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356912356] [2022-03-01 15:03:42,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:42,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:03:42,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:42,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:03:42,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:03:42,933 INFO L87 Difference]: Start difference. First operand 5234 states and 10720 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:03:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:46,509 INFO L93 Difference]: Finished difference Result 7354 states and 15076 transitions. [2022-03-01 15:03:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 15:03:46,509 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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 [2022-03-01 15:03:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:46,517 INFO L225 Difference]: With dead ends: 7354 [2022-03-01 15:03:46,517 INFO L226 Difference]: Without dead ends: 7354 [2022-03-01 15:03:46,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=900, Invalid=4356, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 15:03:46,519 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 1537 mSDsluCounter, 8573 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 9113 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:46,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 9113 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:03:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2022-03-01 15:03:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 5254. [2022-03-01 15:03:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5251 states have (on average 2.0491334983812606) internal successors, (10760), 5253 states have internal predecessors, (10760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 10760 transitions. [2022-03-01 15:03:46,582 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 10760 transitions. Word has length 99 [2022-03-01 15:03:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:46,582 INFO L470 AbstractCegarLoop]: Abstraction has 5254 states and 10760 transitions. [2022-03-01 15:03:46,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:03:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 10760 transitions. [2022-03-01 15:03:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:46,586 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:46,586 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] [2022-03-01 15:03:46,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-01 15:03:46,586 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:46,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash -917579705, now seen corresponding path program 17 times [2022-03-01 15:03:46,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:46,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102293630] [2022-03-01 15:03:46,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:46,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:47,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:47,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102293630] [2022-03-01 15:03:47,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102293630] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:47,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:47,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:47,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458354372] [2022-03-01 15:03:47,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:47,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:47,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:47,400 INFO L87 Difference]: Start difference. First operand 5254 states and 10760 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:50,888 INFO L93 Difference]: Finished difference Result 7626 states and 15671 transitions. [2022-03-01 15:03:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:50,898 INFO L225 Difference]: With dead ends: 7626 [2022-03-01 15:03:50,898 INFO L226 Difference]: Without dead ends: 7626 [2022-03-01 15:03:50,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:50,899 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1481 mSDsluCounter, 10680 mSDsCounter, 0 mSdLazyCounter, 4190 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 11243 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:50,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 11243 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4190 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:03:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2022-03-01 15:03:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 5272. [2022-03-01 15:03:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5269 states have (on average 2.049345226798254) internal successors, (10798), 5271 states have internal predecessors, (10798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 10798 transitions. [2022-03-01 15:03:50,965 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 10798 transitions. Word has length 99 [2022-03-01 15:03:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:50,966 INFO L470 AbstractCegarLoop]: Abstraction has 5272 states and 10798 transitions. [2022-03-01 15:03:50,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:50,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 10798 transitions. [2022-03-01 15:03:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:50,969 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:50,969 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] [2022-03-01 15:03:50,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-01 15:03:50,969 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1010223217, now seen corresponding path program 18 times [2022-03-01 15:03:50,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:50,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359967414] [2022-03-01 15:03:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:51,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:51,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359967414] [2022-03-01 15:03:51,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359967414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:51,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:51,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:51,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6007337] [2022-03-01 15:03:51,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:51,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:51,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:51,703 INFO L87 Difference]: Start difference. First operand 5272 states and 10798 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:55,288 INFO L93 Difference]: Finished difference Result 9573 states and 19674 transitions. [2022-03-01 15:03:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:03:55,289 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:55,298 INFO L225 Difference]: With dead ends: 9573 [2022-03-01 15:03:55,298 INFO L226 Difference]: Without dead ends: 9573 [2022-03-01 15:03:55,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:03:55,298 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1589 mSDsluCounter, 10253 mSDsCounter, 0 mSdLazyCounter, 3796 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 10862 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:55,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 10862 Invalid, 3830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3796 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:03:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9573 states. [2022-03-01 15:03:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9573 to 5274. [2022-03-01 15:03:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5271 states have (on average 2.0493265035097705) internal successors, (10802), 5273 states have internal predecessors, (10802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 10802 transitions. [2022-03-01 15:03:55,356 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 10802 transitions. Word has length 99 [2022-03-01 15:03:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:55,357 INFO L470 AbstractCegarLoop]: Abstraction has 5274 states and 10802 transitions. [2022-03-01 15:03:55,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 10802 transitions. [2022-03-01 15:03:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:55,360 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:55,360 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] [2022-03-01 15:03:55,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-01 15:03:55,361 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash 196946207, now seen corresponding path program 19 times [2022-03-01 15:03:55,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:55,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505977905] [2022-03-01 15:03:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:55,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:03:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:03:55,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:03:55,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505977905] [2022-03-01 15:03:55,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505977905] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:03:55,960 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:03:55,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:03:55,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532771173] [2022-03-01 15:03:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:03:55,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:03:55,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:03:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:03:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:03:55,961 INFO L87 Difference]: Start difference. First operand 5274 states and 10802 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:03:59,892 INFO L93 Difference]: Finished difference Result 7683 states and 15768 transitions. [2022-03-01 15:03:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:03:59,892 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:03:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:03:59,900 INFO L225 Difference]: With dead ends: 7683 [2022-03-01 15:03:59,900 INFO L226 Difference]: Without dead ends: 7683 [2022-03-01 15:03:59,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:03:59,900 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1652 mSDsluCounter, 9479 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 10056 SdHoareTripleChecker+Invalid, 3747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:03:59,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1652 Valid, 10056 Invalid, 3747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:03:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7683 states. [2022-03-01 15:03:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7683 to 5256. [2022-03-01 15:03:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 5253 states have (on average 2.049114791547687) internal successors, (10764), 5255 states have internal predecessors, (10764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:03:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 10764 transitions. [2022-03-01 15:03:59,954 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 10764 transitions. Word has length 99 [2022-03-01 15:03:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:03:59,954 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 10764 transitions. [2022-03-01 15:03:59,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:03:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 10764 transitions. [2022-03-01 15:03:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:03:59,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:03:59,958 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] [2022-03-01 15:03:59,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-01 15:03:59,958 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:03:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:03:59,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1806797157, now seen corresponding path program 20 times [2022-03-01 15:03:59,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:03:59,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342427683] [2022-03-01 15:03:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:03:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:03:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:00,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:00,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342427683] [2022-03-01 15:04:00,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342427683] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:00,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:00,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:00,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846417952] [2022-03-01 15:04:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:00,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:00,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:00,631 INFO L87 Difference]: Start difference. First operand 5256 states and 10764 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:04,429 INFO L93 Difference]: Finished difference Result 7370 states and 15123 transitions. [2022-03-01 15:04:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:04,429 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:04:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:04,438 INFO L225 Difference]: With dead ends: 7370 [2022-03-01 15:04:04,438 INFO L226 Difference]: Without dead ends: 7370 [2022-03-01 15:04:04,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:04:04,439 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1511 mSDsluCounter, 9931 mSDsCounter, 0 mSdLazyCounter, 3819 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 10492 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:04,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 10492 Invalid, 3852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3819 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:04:04,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2022-03-01 15:04:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 5254. [2022-03-01 15:04:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5251 states have (on average 2.0491334983812606) internal successors, (10760), 5253 states have internal predecessors, (10760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 10760 transitions. [2022-03-01 15:04:04,493 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 10760 transitions. Word has length 99 [2022-03-01 15:04:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:04,493 INFO L470 AbstractCegarLoop]: Abstraction has 5254 states and 10760 transitions. [2022-03-01 15:04:04,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 10760 transitions. [2022-03-01 15:04:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:04,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:04,519 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] [2022-03-01 15:04:04,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-01 15:04:04,519 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:04,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1671774703, now seen corresponding path program 21 times [2022-03-01 15:04:04,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:04,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088045339] [2022-03-01 15:04:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:04,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:05,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:05,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088045339] [2022-03-01 15:04:05,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088045339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:05,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:05,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:05,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411934969] [2022-03-01 15:04:05,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:05,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:05,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:05,124 INFO L87 Difference]: Start difference. First operand 5254 states and 10760 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:08,978 INFO L93 Difference]: Finished difference Result 7706 states and 15833 transitions. [2022-03-01 15:04:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:08,978 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:04:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:08,987 INFO L225 Difference]: With dead ends: 7706 [2022-03-01 15:04:08,987 INFO L226 Difference]: Without dead ends: 7706 [2022-03-01 15:04:08,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:04:08,988 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1502 mSDsluCounter, 9917 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 10480 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:08,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 10480 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:04:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-03-01 15:04:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 5412. [2022-03-01 15:04:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5409 states have (on average 2.05121094472176) internal successors, (11095), 5411 states have internal predecessors, (11095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 11095 transitions. [2022-03-01 15:04:09,044 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 11095 transitions. Word has length 99 [2022-03-01 15:04:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:09,044 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 11095 transitions. [2022-03-01 15:04:09,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 11095 transitions. [2022-03-01 15:04:09,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:09,048 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:09,048 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] [2022-03-01 15:04:09,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-01 15:04:09,048 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1764418215, now seen corresponding path program 22 times [2022-03-01 15:04:09,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:09,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500123350] [2022-03-01 15:04:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:09,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:09,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500123350] [2022-03-01 15:04:09,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500123350] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:09,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:09,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:04:09,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985497738] [2022-03-01 15:04:09,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:09,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:04:09,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:04:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:04:09,736 INFO L87 Difference]: Start difference. First operand 5412 states and 11095 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:14,333 INFO L93 Difference]: Finished difference Result 9676 states and 19884 transitions. [2022-03-01 15:04:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:04:14,333 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:04:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:14,344 INFO L225 Difference]: With dead ends: 9676 [2022-03-01 15:04:14,344 INFO L226 Difference]: Without dead ends: 9676 [2022-03-01 15:04:14,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:04:14,347 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1663 mSDsluCounter, 11077 mSDsCounter, 0 mSdLazyCounter, 4145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 11686 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:14,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 11686 Invalid, 4184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4145 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:04:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9676 states. [2022-03-01 15:04:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9676 to 5414. [2022-03-01 15:04:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5411 states have (on average 2.0511920162631676) internal successors, (11099), 5413 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 11099 transitions. [2022-03-01 15:04:14,420 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 11099 transitions. Word has length 99 [2022-03-01 15:04:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:14,420 INFO L470 AbstractCegarLoop]: Abstraction has 5414 states and 11099 transitions. [2022-03-01 15:04:14,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 11099 transitions. [2022-03-01 15:04:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:14,424 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:14,425 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] [2022-03-01 15:04:14,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-01 15:04:14,425 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash -557248791, now seen corresponding path program 23 times [2022-03-01 15:04:14,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:14,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721641856] [2022-03-01 15:04:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:15,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:15,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721641856] [2022-03-01 15:04:15,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721641856] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:15,194 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:15,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:15,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145450396] [2022-03-01 15:04:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:15,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:15,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:15,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:15,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:15,195 INFO L87 Difference]: Start difference. First operand 5414 states and 11099 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:19,043 INFO L93 Difference]: Finished difference Result 7769 states and 15942 transitions. [2022-03-01 15:04:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:19,043 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:04:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:19,051 INFO L225 Difference]: With dead ends: 7769 [2022-03-01 15:04:19,051 INFO L226 Difference]: Without dead ends: 7769 [2022-03-01 15:04:19,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:04:19,052 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1764 mSDsluCounter, 8795 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 9372 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:19,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1764 Valid, 9372 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:04:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7769 states. [2022-03-01 15:04:19,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7769 to 5412. [2022-03-01 15:04:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5409 states have (on average 2.05121094472176) internal successors, (11095), 5411 states have internal predecessors, (11095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 11095 transitions. [2022-03-01 15:04:19,105 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 11095 transitions. Word has length 99 [2022-03-01 15:04:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:19,105 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 11095 transitions. [2022-03-01 15:04:19,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 11095 transitions. [2022-03-01 15:04:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:19,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:19,109 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] [2022-03-01 15:04:19,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-01 15:04:19,110 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1052602159, now seen corresponding path program 24 times [2022-03-01 15:04:19,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:19,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664218320] [2022-03-01 15:04:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:19,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:19,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:19,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664218320] [2022-03-01 15:04:19,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664218320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:19,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:19,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:04:19,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21433592] [2022-03-01 15:04:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:19,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:04:19,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:04:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:04:19,686 INFO L87 Difference]: Start difference. First operand 5412 states and 11095 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:23,338 INFO L93 Difference]: Finished difference Result 7791 states and 16003 transitions. [2022-03-01 15:04:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:04:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:23,347 INFO L225 Difference]: With dead ends: 7791 [2022-03-01 15:04:23,347 INFO L226 Difference]: Without dead ends: 7791 [2022-03-01 15:04:23,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:04:23,348 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1540 mSDsluCounter, 10490 mSDsCounter, 0 mSdLazyCounter, 4211 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 11057 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:23,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 11057 Invalid, 4249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4211 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:04:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2022-03-01 15:04:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 5429. [2022-03-01 15:04:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5429 states, 5426 states have (on average 2.051050497604128) internal successors, (11129), 5428 states have internal predecessors, (11129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5429 states to 5429 states and 11129 transitions. [2022-03-01 15:04:23,405 INFO L78 Accepts]: Start accepts. Automaton has 5429 states and 11129 transitions. Word has length 99 [2022-03-01 15:04:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:23,405 INFO L470 AbstractCegarLoop]: Abstraction has 5429 states and 11129 transitions. [2022-03-01 15:04:23,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5429 states and 11129 transitions. [2022-03-01 15:04:23,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:23,409 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:23,410 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] [2022-03-01 15:04:23,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-01 15:04:23,410 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1129847727, now seen corresponding path program 25 times [2022-03-01 15:04:23,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:23,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679720356] [2022-03-01 15:04:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:23,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:24,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:24,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679720356] [2022-03-01 15:04:24,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679720356] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:24,048 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:24,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:04:24,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194817077] [2022-03-01 15:04:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:24,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:04:24,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:04:24,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:04:24,049 INFO L87 Difference]: Start difference. First operand 5429 states and 11129 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:27,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:27,292 INFO L93 Difference]: Finished difference Result 7619 states and 15642 transitions. [2022-03-01 15:04:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:04:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:27,300 INFO L225 Difference]: With dead ends: 7619 [2022-03-01 15:04:27,300 INFO L226 Difference]: Without dead ends: 7619 [2022-03-01 15:04:27,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:04:27,306 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1666 mSDsluCounter, 8873 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 9433 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:27,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 9433 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3419 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:04:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2022-03-01 15:04:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 5463. [2022-03-01 15:04:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5460 states have (on average 2.0507326007326006) internal successors, (11197), 5462 states have internal predecessors, (11197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 11197 transitions. [2022-03-01 15:04:27,363 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 11197 transitions. Word has length 99 [2022-03-01 15:04:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:27,363 INFO L470 AbstractCegarLoop]: Abstraction has 5463 states and 11197 transitions. [2022-03-01 15:04:27,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 11197 transitions. [2022-03-01 15:04:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:27,367 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:27,367 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] [2022-03-01 15:04:27,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-01 15:04:27,368 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2006338119, now seen corresponding path program 26 times [2022-03-01 15:04:27,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:27,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103379682] [2022-03-01 15:04:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:27,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:27,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:27,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103379682] [2022-03-01 15:04:27,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103379682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:27,956 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:27,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:04:27,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892887718] [2022-03-01 15:04:27,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:27,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:04:27,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:04:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:04:27,957 INFO L87 Difference]: Start difference. First operand 5463 states and 11197 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:31,271 INFO L93 Difference]: Finished difference Result 7972 states and 16384 transitions. [2022-03-01 15:04:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:04:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:31,279 INFO L225 Difference]: With dead ends: 7972 [2022-03-01 15:04:31,279 INFO L226 Difference]: Without dead ends: 7972 [2022-03-01 15:04:31,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:04:31,280 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1562 mSDsluCounter, 9409 mSDsCounter, 0 mSdLazyCounter, 3630 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 9977 SdHoareTripleChecker+Invalid, 3668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:31,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 9977 Invalid, 3668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3630 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:04:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7972 states. [2022-03-01 15:04:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7972 to 5491. [2022-03-01 15:04:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5491 states, 5488 states have (on average 2.050838192419825) internal successors, (11255), 5490 states have internal predecessors, (11255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5491 states to 5491 states and 11255 transitions. [2022-03-01 15:04:31,330 INFO L78 Accepts]: Start accepts. Automaton has 5491 states and 11255 transitions. Word has length 99 [2022-03-01 15:04:31,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:31,330 INFO L470 AbstractCegarLoop]: Abstraction has 5491 states and 11255 transitions. [2022-03-01 15:04:31,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5491 states and 11255 transitions. [2022-03-01 15:04:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:31,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:31,334 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] [2022-03-01 15:04:31,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-01 15:04:31,334 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2098981631, now seen corresponding path program 27 times [2022-03-01 15:04:31,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:31,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048703884] [2022-03-01 15:04:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:31,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:31,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:31,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048703884] [2022-03-01 15:04:31,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048703884] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:31,875 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:31,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:04:31,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381767681] [2022-03-01 15:04:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:31,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:04:31,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:31,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:04:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:04:31,876 INFO L87 Difference]: Start difference. First operand 5491 states and 11255 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:35,370 INFO L93 Difference]: Finished difference Result 9942 states and 20435 transitions. [2022-03-01 15:04:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:04:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:04:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:35,383 INFO L225 Difference]: With dead ends: 9942 [2022-03-01 15:04:35,383 INFO L226 Difference]: Without dead ends: 9942 [2022-03-01 15:04:35,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:04:35,384 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1685 mSDsluCounter, 10363 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 10977 SdHoareTripleChecker+Invalid, 3901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:35,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 10977 Invalid, 3901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3862 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:04:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9942 states. [2022-03-01 15:04:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9942 to 5493. [2022-03-01 15:04:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5490 states have (on average 2.0508196721311474) internal successors, (11259), 5492 states have internal predecessors, (11259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 11259 transitions. [2022-03-01 15:04:35,464 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 11259 transitions. Word has length 99 [2022-03-01 15:04:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:35,464 INFO L470 AbstractCegarLoop]: Abstraction has 5493 states and 11259 transitions. [2022-03-01 15:04:35,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:04:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 11259 transitions. [2022-03-01 15:04:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:35,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:35,468 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] [2022-03-01 15:04:35,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-01 15:04:35,469 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash -891812207, now seen corresponding path program 28 times [2022-03-01 15:04:35,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:35,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751811588] [2022-03-01 15:04:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:35,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:35,983 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:35,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751811588] [2022-03-01 15:04:35,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751811588] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:35,984 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:35,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:35,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625655768] [2022-03-01 15:04:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:35,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:35,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:35,989 INFO L87 Difference]: Start difference. First operand 5493 states and 11259 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:39,449 INFO L93 Difference]: Finished difference Result 8035 states and 16493 transitions. [2022-03-01 15:04:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:04:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:39,459 INFO L225 Difference]: With dead ends: 8035 [2022-03-01 15:04:39,459 INFO L226 Difference]: Without dead ends: 8035 [2022-03-01 15:04:39,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:04:39,460 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1687 mSDsluCounter, 10214 mSDsCounter, 0 mSdLazyCounter, 3967 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 10796 SdHoareTripleChecker+Invalid, 4005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:39,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 10796 Invalid, 4005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3967 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:04:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8035 states. [2022-03-01 15:04:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8035 to 5475. [2022-03-01 15:04:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5472 states have (on average 2.05062134502924) internal successors, (11221), 5474 states have internal predecessors, (11221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 11221 transitions. [2022-03-01 15:04:39,524 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 11221 transitions. Word has length 99 [2022-03-01 15:04:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:39,524 INFO L470 AbstractCegarLoop]: Abstraction has 5475 states and 11221 transitions. [2022-03-01 15:04:39,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 11221 transitions. [2022-03-01 15:04:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:39,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:39,528 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] [2022-03-01 15:04:39,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-01 15:04:39,529 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 718038743, now seen corresponding path program 29 times [2022-03-01 15:04:39,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:39,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623865201] [2022-03-01 15:04:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:39,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:40,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:40,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623865201] [2022-03-01 15:04:40,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623865201] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:40,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:40,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:40,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249156043] [2022-03-01 15:04:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:40,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:40,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:40,203 INFO L87 Difference]: Start difference. First operand 5475 states and 11221 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:43,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:43,616 INFO L93 Difference]: Finished difference Result 8057 states and 16554 transitions. [2022-03-01 15:04:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:43,617 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:04:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:43,626 INFO L225 Difference]: With dead ends: 8057 [2022-03-01 15:04:43,627 INFO L226 Difference]: Without dead ends: 8057 [2022-03-01 15:04:43,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:04:43,628 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1480 mSDsluCounter, 10394 mSDsCounter, 0 mSdLazyCounter, 4074 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 10966 SdHoareTripleChecker+Invalid, 4105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:43,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 10966 Invalid, 4105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4074 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:04:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8057 states. [2022-03-01 15:04:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8057 to 5473. [2022-03-01 15:04:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 5470 states have (on average 2.0506398537477146) internal successors, (11217), 5472 states have internal predecessors, (11217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 11217 transitions. [2022-03-01 15:04:43,692 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 11217 transitions. Word has length 99 [2022-03-01 15:04:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:43,693 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 11217 transitions. [2022-03-01 15:04:43,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 11217 transitions. [2022-03-01 15:04:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:43,697 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:43,697 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] [2022-03-01 15:04:43,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-01 15:04:43,697 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1464411143, now seen corresponding path program 30 times [2022-03-01 15:04:43,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:43,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486285385] [2022-03-01 15:04:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:43,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:44,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:44,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486285385] [2022-03-01 15:04:44,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486285385] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:44,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:44,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-01 15:04:44,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163104099] [2022-03-01 15:04:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:44,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 15:04:44,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 15:04:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:04:44,704 INFO L87 Difference]: Start difference. First operand 5473 states and 11217 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:04:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:49,920 INFO L93 Difference]: Finished difference Result 9144 states and 18816 transitions. [2022-03-01 15:04:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 15:04:49,920 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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 [2022-03-01 15:04:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:49,929 INFO L225 Difference]: With dead ends: 9144 [2022-03-01 15:04:49,929 INFO L226 Difference]: Without dead ends: 9144 [2022-03-01 15:04:49,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-03-01 15:04:49,930 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 2040 mSDsluCounter, 10051 mSDsCounter, 0 mSdLazyCounter, 4207 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 10626 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:49,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2040 Valid, 10626 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4207 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 15:04:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9144 states. [2022-03-01 15:04:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9144 to 5772. [2022-03-01 15:04:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 5769 states have (on average 2.0542555035534753) internal successors, (11851), 5771 states have internal predecessors, (11851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 11851 transitions. [2022-03-01 15:04:49,990 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 11851 transitions. Word has length 99 [2022-03-01 15:04:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:49,990 INFO L470 AbstractCegarLoop]: Abstraction has 5772 states and 11851 transitions. [2022-03-01 15:04:49,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:04:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 11851 transitions. [2022-03-01 15:04:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:49,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:49,994 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] [2022-03-01 15:04:49,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-01 15:04:49,994 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash -362345163, now seen corresponding path program 31 times [2022-03-01 15:04:49,994 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:49,994 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597333760] [2022-03-01 15:04:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:50,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:50,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597333760] [2022-03-01 15:04:50,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597333760] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:50,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:50,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:50,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816196714] [2022-03-01 15:04:50,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:50,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:50,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:50,621 INFO L87 Difference]: Start difference. First operand 5772 states and 11851 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:53,995 INFO L93 Difference]: Finished difference Result 9583 states and 19700 transitions. [2022-03-01 15:04:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:53,996 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:04:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:54,005 INFO L225 Difference]: With dead ends: 9583 [2022-03-01 15:04:54,005 INFO L226 Difference]: Without dead ends: 9583 [2022-03-01 15:04:54,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:04:54,006 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1753 mSDsluCounter, 9562 mSDsCounter, 0 mSdLazyCounter, 3706 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 10133 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:54,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 10133 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3706 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:04:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2022-03-01 15:04:54,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 5469. [2022-03-01 15:04:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5469 states, 5466 states have (on average 2.0506769118185146) internal successors, (11209), 5468 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 11209 transitions. [2022-03-01 15:04:54,067 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 11209 transitions. Word has length 99 [2022-03-01 15:04:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:54,068 INFO L470 AbstractCegarLoop]: Abstraction has 5469 states and 11209 transitions. [2022-03-01 15:04:54,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 11209 transitions. [2022-03-01 15:04:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:54,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:54,071 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] [2022-03-01 15:04:54,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-01 15:04:54,072 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash 259071161, now seen corresponding path program 32 times [2022-03-01 15:04:54,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:54,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513937563] [2022-03-01 15:04:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:54,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:54,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513937563] [2022-03-01 15:04:54,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513937563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:54,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:54,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:54,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514184643] [2022-03-01 15:04:54,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:54,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:54,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:54,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:54,683 INFO L87 Difference]: Start difference. First operand 5469 states and 11209 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:04:57,916 INFO L93 Difference]: Finished difference Result 7710 states and 15824 transitions. [2022-03-01 15:04:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:04:57,916 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:04:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:04:57,925 INFO L225 Difference]: With dead ends: 7710 [2022-03-01 15:04:57,925 INFO L226 Difference]: Without dead ends: 7710 [2022-03-01 15:04:57,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:04:57,928 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1654 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 9754 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:04:57,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 9754 Invalid, 3520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:04:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2022-03-01 15:04:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 5520. [2022-03-01 15:04:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5520 states, 5517 states have (on average 2.0502084466195396) internal successors, (11311), 5519 states have internal predecessors, (11311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:04:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5520 states to 5520 states and 11311 transitions. [2022-03-01 15:04:58,017 INFO L78 Accepts]: Start accepts. Automaton has 5520 states and 11311 transitions. Word has length 99 [2022-03-01 15:04:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:04:58,017 INFO L470 AbstractCegarLoop]: Abstraction has 5520 states and 11311 transitions. [2022-03-01 15:04:58,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:04:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5520 states and 11311 transitions. [2022-03-01 15:04:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:04:58,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:04:58,021 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] [2022-03-01 15:04:58,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-01 15:04:58,021 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:04:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:04:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1251499575, now seen corresponding path program 33 times [2022-03-01 15:04:58,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:04:58,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209104204] [2022-03-01 15:04:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:04:58,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:04:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:04:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:04:58,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:04:58,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209104204] [2022-03-01 15:04:58,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209104204] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:04:58,718 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:04:58,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:04:58,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648460808] [2022-03-01 15:04:58,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:04:58,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:04:58,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:04:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:04:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:04:58,719 INFO L87 Difference]: Start difference. First operand 5520 states and 11311 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:02,142 INFO L93 Difference]: Finished difference Result 8048 states and 16536 transitions. [2022-03-01 15:05:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:02,142 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:02,152 INFO L225 Difference]: With dead ends: 8048 [2022-03-01 15:05:02,152 INFO L226 Difference]: Without dead ends: 8048 [2022-03-01 15:05:02,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:02,153 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1566 mSDsluCounter, 10376 mSDsCounter, 0 mSdLazyCounter, 4002 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 10947 SdHoareTripleChecker+Invalid, 4036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:02,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 10947 Invalid, 4036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4002 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:05:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8048 states. [2022-03-01 15:05:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8048 to 5550. [2022-03-01 15:05:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5550 states, 5547 states have (on average 2.0502974580854514) internal successors, (11373), 5549 states have internal predecessors, (11373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 11373 transitions. [2022-03-01 15:05:02,269 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 11373 transitions. Word has length 99 [2022-03-01 15:05:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:02,269 INFO L470 AbstractCegarLoop]: Abstraction has 5550 states and 11373 transitions. [2022-03-01 15:05:02,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 11373 transitions. [2022-03-01 15:05:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:02,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:02,273 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] [2022-03-01 15:05:02,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-01 15:05:02,273 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1158856063, now seen corresponding path program 34 times [2022-03-01 15:05:02,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:02,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651403469] [2022-03-01 15:05:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:02,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:02,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651403469] [2022-03-01 15:05:02,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651403469] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:02,827 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:02,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:02,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580141605] [2022-03-01 15:05:02,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:02,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:02,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:02,828 INFO L87 Difference]: Start difference. First operand 5550 states and 11373 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:06,547 INFO L93 Difference]: Finished difference Result 10018 states and 20587 transitions. [2022-03-01 15:05:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:05:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:06,559 INFO L225 Difference]: With dead ends: 10018 [2022-03-01 15:05:06,559 INFO L226 Difference]: Without dead ends: 10018 [2022-03-01 15:05:06,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:05:06,560 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1556 mSDsluCounter, 10376 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 10993 SdHoareTripleChecker+Invalid, 3773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:06,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 10993 Invalid, 3773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:05:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10018 states. [2022-03-01 15:05:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10018 to 5552. [2022-03-01 15:05:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5552 states, 5549 states have (on average 2.0502793296089385) internal successors, (11377), 5551 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 11377 transitions. [2022-03-01 15:05:06,627 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 11377 transitions. Word has length 99 [2022-03-01 15:05:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:06,628 INFO L470 AbstractCegarLoop]: Abstraction has 5552 states and 11377 transitions. [2022-03-01 15:05:06,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 11377 transitions. [2022-03-01 15:05:06,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:06,631 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:06,631 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] [2022-03-01 15:05:06,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-01 15:05:06,632 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:06,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1928941809, now seen corresponding path program 35 times [2022-03-01 15:05:06,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:06,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047696506] [2022-03-01 15:05:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:07,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:07,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047696506] [2022-03-01 15:05:07,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047696506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:07,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:07,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:07,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795621993] [2022-03-01 15:05:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:07,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:07,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:07,236 INFO L87 Difference]: Start difference. First operand 5552 states and 11377 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:10,642 INFO L93 Difference]: Finished difference Result 8111 states and 16645 transitions. [2022-03-01 15:05:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:10,643 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:10,651 INFO L225 Difference]: With dead ends: 8111 [2022-03-01 15:05:10,651 INFO L226 Difference]: Without dead ends: 8111 [2022-03-01 15:05:10,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:10,652 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1489 mSDsluCounter, 10166 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 10751 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:10,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 10751 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3777 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:05:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8111 states. [2022-03-01 15:05:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8111 to 5534. [2022-03-01 15:05:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 5531 states have (on average 2.050081359609474) internal successors, (11339), 5533 states have internal predecessors, (11339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 11339 transitions. [2022-03-01 15:05:10,713 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 11339 transitions. Word has length 99 [2022-03-01 15:05:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:10,713 INFO L470 AbstractCegarLoop]: Abstraction has 5534 states and 11339 transitions. [2022-03-01 15:05:10,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 11339 transitions. [2022-03-01 15:05:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:10,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:10,716 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] [2022-03-01 15:05:10,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-01 15:05:10,717 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash -319090859, now seen corresponding path program 36 times [2022-03-01 15:05:10,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:10,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409771258] [2022-03-01 15:05:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:10,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:11,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:11,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409771258] [2022-03-01 15:05:11,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409771258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:11,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:11,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:11,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078936556] [2022-03-01 15:05:11,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:11,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:11,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:11,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:11,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:11,409 INFO L87 Difference]: Start difference. First operand 5534 states and 11339 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:14,838 INFO L93 Difference]: Finished difference Result 8133 states and 16706 transitions. [2022-03-01 15:05:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:14,838 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:14,846 INFO L225 Difference]: With dead ends: 8133 [2022-03-01 15:05:14,846 INFO L226 Difference]: Without dead ends: 8133 [2022-03-01 15:05:14,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:14,847 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1641 mSDsluCounter, 10132 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 10707 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:14,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 10707 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:05:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8133 states. [2022-03-01 15:05:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8133 to 5532. [2022-03-01 15:05:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5529 states have (on average 2.0500994754928556) internal successors, (11335), 5531 states have internal predecessors, (11335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 11335 transitions. [2022-03-01 15:05:14,902 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 11335 transitions. Word has length 99 [2022-03-01 15:05:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:14,903 INFO L470 AbstractCegarLoop]: Abstraction has 5532 states and 11335 transitions. [2022-03-01 15:05:14,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 11335 transitions. [2022-03-01 15:05:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:14,906 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:14,907 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] [2022-03-01 15:05:14,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-01 15:05:14,907 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:14,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1793426551, now seen corresponding path program 37 times [2022-03-01 15:05:14,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:14,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108261273] [2022-03-01 15:05:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:14,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:15,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:15,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108261273] [2022-03-01 15:05:15,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108261273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:15,443 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:15,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:15,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238977081] [2022-03-01 15:05:15,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:15,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:15,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:15,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:15,444 INFO L87 Difference]: Start difference. First operand 5532 states and 11335 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:18,615 INFO L93 Difference]: Finished difference Result 8184 states and 16808 transitions. [2022-03-01 15:05:18,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:18,623 INFO L225 Difference]: With dead ends: 8184 [2022-03-01 15:05:18,623 INFO L226 Difference]: Without dead ends: 8184 [2022-03-01 15:05:18,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:18,624 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1616 mSDsluCounter, 9087 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 9661 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:18,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1616 Valid, 9661 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:05:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8184 states. [2022-03-01 15:05:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8184 to 5528. [2022-03-01 15:05:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5525 states have (on average 2.050135746606335) internal successors, (11327), 5527 states have internal predecessors, (11327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 11327 transitions. [2022-03-01 15:05:18,680 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 11327 transitions. Word has length 99 [2022-03-01 15:05:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:18,680 INFO L470 AbstractCegarLoop]: Abstraction has 5528 states and 11327 transitions. [2022-03-01 15:05:18,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 11327 transitions. [2022-03-01 15:05:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:18,684 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:18,685 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] [2022-03-01 15:05:18,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-01 15:05:18,685 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -778058441, now seen corresponding path program 38 times [2022-03-01 15:05:18,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:18,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101801165] [2022-03-01 15:05:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:19,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:19,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101801165] [2022-03-01 15:05:19,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101801165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:19,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:19,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:19,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925220234] [2022-03-01 15:05:19,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:19,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:19,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:19,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:19,297 INFO L87 Difference]: Start difference. First operand 5528 states and 11327 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:22,586 INFO L93 Difference]: Finished difference Result 8269 states and 16978 transitions. [2022-03-01 15:05:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:22,595 INFO L225 Difference]: With dead ends: 8269 [2022-03-01 15:05:22,595 INFO L226 Difference]: Without dead ends: 8269 [2022-03-01 15:05:22,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:22,595 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1703 mSDsluCounter, 9138 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 9716 SdHoareTripleChecker+Invalid, 3606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:22,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 9716 Invalid, 3606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3570 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:05:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2022-03-01 15:05:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 5522. [2022-03-01 15:05:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 5519 states have (on average 2.0501902518572206) internal successors, (11315), 5521 states have internal predecessors, (11315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 11315 transitions. [2022-03-01 15:05:22,650 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 11315 transitions. Word has length 99 [2022-03-01 15:05:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:22,650 INFO L470 AbstractCegarLoop]: Abstraction has 5522 states and 11315 transitions. [2022-03-01 15:05:22,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 11315 transitions. [2022-03-01 15:05:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:22,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:22,654 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] [2022-03-01 15:05:22,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-01 15:05:22,654 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2006609387, now seen corresponding path program 39 times [2022-03-01 15:05:22,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:22,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861352418] [2022-03-01 15:05:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:23,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:23,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861352418] [2022-03-01 15:05:23,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861352418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:23,511 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:23,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:23,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839612920] [2022-03-01 15:05:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:23,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:23,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:23,513 INFO L87 Difference]: Start difference. First operand 5522 states and 11315 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:27,670 INFO L93 Difference]: Finished difference Result 7780 states and 15964 transitions. [2022-03-01 15:05:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:27,670 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:27,710 INFO L225 Difference]: With dead ends: 7780 [2022-03-01 15:05:27,710 INFO L226 Difference]: Without dead ends: 7780 [2022-03-01 15:05:27,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:27,711 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1553 mSDsluCounter, 9423 mSDsCounter, 0 mSdLazyCounter, 3505 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 9992 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:27,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 9992 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3505 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:05:27,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2022-03-01 15:05:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 5539. [2022-03-01 15:05:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5539 states, 5536 states have (on average 2.05003612716763) internal successors, (11349), 5538 states have internal predecessors, (11349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 11349 transitions. [2022-03-01 15:05:27,759 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 11349 transitions. Word has length 99 [2022-03-01 15:05:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:27,759 INFO L470 AbstractCegarLoop]: Abstraction has 5539 states and 11349 transitions. [2022-03-01 15:05:27,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 11349 transitions. [2022-03-01 15:05:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:27,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:27,763 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] [2022-03-01 15:05:27,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-01 15:05:27,764 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1348039269, now seen corresponding path program 40 times [2022-03-01 15:05:27,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:27,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566952337] [2022-03-01 15:05:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:28,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:28,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566952337] [2022-03-01 15:05:28,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566952337] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:28,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:28,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:28,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880360575] [2022-03-01 15:05:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:28,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:28,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:28,467 INFO L87 Difference]: Start difference. First operand 5539 states and 11349 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:32,515 INFO L93 Difference]: Finished difference Result 8086 states and 16612 transitions. [2022-03-01 15:05:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:32,516 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:32,525 INFO L225 Difference]: With dead ends: 8086 [2022-03-01 15:05:32,525 INFO L226 Difference]: Without dead ends: 8086 [2022-03-01 15:05:32,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:32,525 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1772 mSDsluCounter, 9303 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 9876 SdHoareTripleChecker+Invalid, 3408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:32,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1772 Valid, 9876 Invalid, 3408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3370 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:05:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-03-01 15:05:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 5571. [2022-03-01 15:05:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5571 states, 5568 states have (on average 2.0501077586206895) internal successors, (11415), 5570 states have internal predecessors, (11415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5571 states to 5571 states and 11415 transitions. [2022-03-01 15:05:32,579 INFO L78 Accepts]: Start accepts. Automaton has 5571 states and 11415 transitions. Word has length 99 [2022-03-01 15:05:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:32,580 INFO L470 AbstractCegarLoop]: Abstraction has 5571 states and 11415 transitions. [2022-03-01 15:05:32,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5571 states and 11415 transitions. [2022-03-01 15:05:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:32,583 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:32,583 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] [2022-03-01 15:05:32,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-01 15:05:32,584 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1255395757, now seen corresponding path program 41 times [2022-03-01 15:05:32,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:32,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897673456] [2022-03-01 15:05:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:32,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:33,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:33,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897673456] [2022-03-01 15:05:33,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897673456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:33,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:33,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:33,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886853152] [2022-03-01 15:05:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:33,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:33,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:33,142 INFO L87 Difference]: Start difference. First operand 5571 states and 11415 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:36,688 INFO L93 Difference]: Finished difference Result 10056 states and 20663 transitions. [2022-03-01 15:05:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:05:36,688 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:36,699 INFO L225 Difference]: With dead ends: 10056 [2022-03-01 15:05:36,700 INFO L226 Difference]: Without dead ends: 10056 [2022-03-01 15:05:36,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:05:36,701 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1675 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 4056 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 11483 SdHoareTripleChecker+Invalid, 4090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:36,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 11483 Invalid, 4090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4056 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:05:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10056 states. [2022-03-01 15:05:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 5573. [2022-03-01 15:05:36,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5573 states, 5570 states have (on average 2.0500897666068223) internal successors, (11419), 5572 states have internal predecessors, (11419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 11419 transitions. [2022-03-01 15:05:36,766 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 11419 transitions. Word has length 99 [2022-03-01 15:05:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:36,766 INFO L470 AbstractCegarLoop]: Abstraction has 5573 states and 11419 transitions. [2022-03-01 15:05:36,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 11419 transitions. [2022-03-01 15:05:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:36,770 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:36,770 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] [2022-03-01 15:05:36,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-01 15:05:36,770 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1832402115, now seen corresponding path program 42 times [2022-03-01 15:05:36,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:36,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240077248] [2022-03-01 15:05:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:37,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:37,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240077248] [2022-03-01 15:05:37,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240077248] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:37,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:37,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:37,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858223417] [2022-03-01 15:05:37,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:37,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:37,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:37,543 INFO L87 Difference]: Start difference. First operand 5573 states and 11419 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:41,451 INFO L93 Difference]: Finished difference Result 8149 states and 16721 transitions. [2022-03-01 15:05:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:41,451 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:41,459 INFO L225 Difference]: With dead ends: 8149 [2022-03-01 15:05:41,460 INFO L226 Difference]: Without dead ends: 8149 [2022-03-01 15:05:41,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:41,460 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1698 mSDsluCounter, 9920 mSDsCounter, 0 mSdLazyCounter, 3763 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 10507 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:41,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1698 Valid, 10507 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3763 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:05:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2022-03-01 15:05:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 5555. [2022-03-01 15:05:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5555 states, 5552 states have (on average 2.049891930835735) internal successors, (11381), 5554 states have internal predecessors, (11381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 11381 transitions. [2022-03-01 15:05:41,514 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 11381 transitions. Word has length 99 [2022-03-01 15:05:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:41,514 INFO L470 AbstractCegarLoop]: Abstraction has 5555 states and 11381 transitions. [2022-03-01 15:05:41,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 11381 transitions. [2022-03-01 15:05:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:41,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:41,518 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] [2022-03-01 15:05:41,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-01 15:05:41,518 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:41,518 INFO L85 PathProgramCache]: Analyzing trace with hash -222551165, now seen corresponding path program 43 times [2022-03-01 15:05:41,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:41,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942079154] [2022-03-01 15:05:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:41,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:42,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:42,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942079154] [2022-03-01 15:05:42,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942079154] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:42,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:42,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:42,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844322451] [2022-03-01 15:05:42,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:42,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:42,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:42,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:42,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:42,198 INFO L87 Difference]: Start difference. First operand 5555 states and 11381 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:45,728 INFO L93 Difference]: Finished difference Result 8171 states and 16782 transitions. [2022-03-01 15:05:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:45,728 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:45,737 INFO L225 Difference]: With dead ends: 8171 [2022-03-01 15:05:45,737 INFO L226 Difference]: Without dead ends: 8171 [2022-03-01 15:05:45,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:45,737 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1662 mSDsluCounter, 9743 mSDsCounter, 0 mSdLazyCounter, 3591 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 10320 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:45,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 10320 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3591 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:05:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2022-03-01 15:05:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 5553. [2022-03-01 15:05:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5550 states have (on average 2.04990990990991) internal successors, (11377), 5552 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 11377 transitions. [2022-03-01 15:05:45,787 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 11377 transitions. Word has length 99 [2022-03-01 15:05:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:45,787 INFO L470 AbstractCegarLoop]: Abstraction has 5553 states and 11377 transitions. [2022-03-01 15:05:45,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 11377 transitions. [2022-03-01 15:05:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:45,791 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:45,791 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] [2022-03-01 15:05:45,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-01 15:05:45,791 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:45,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:45,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1889966245, now seen corresponding path program 44 times [2022-03-01 15:05:45,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:45,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798075090] [2022-03-01 15:05:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:46,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:46,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798075090] [2022-03-01 15:05:46,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798075090] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:46,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:46,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:46,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308845684] [2022-03-01 15:05:46,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:46,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:46,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:46,606 INFO L87 Difference]: Start difference. First operand 5553 states and 11377 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:50,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:50,793 INFO L93 Difference]: Finished difference Result 8222 states and 16884 transitions. [2022-03-01 15:05:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:50,793 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:50,802 INFO L225 Difference]: With dead ends: 8222 [2022-03-01 15:05:50,802 INFO L226 Difference]: Without dead ends: 8222 [2022-03-01 15:05:50,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:50,803 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1677 mSDsluCounter, 10482 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 11058 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:50,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 11058 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 4008 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:05:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8222 states. [2022-03-01 15:05:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8222 to 5549. [2022-03-01 15:05:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5546 states have (on average 2.0499459069599713) internal successors, (11369), 5548 states have internal predecessors, (11369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 11369 transitions. [2022-03-01 15:05:50,865 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 11369 transitions. Word has length 99 [2022-03-01 15:05:50,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:50,865 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 11369 transitions. [2022-03-01 15:05:50,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 11369 transitions. [2022-03-01 15:05:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:50,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:50,869 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] [2022-03-01 15:05:50,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-01 15:05:50,869 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash -681518747, now seen corresponding path program 45 times [2022-03-01 15:05:50,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:50,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294362251] [2022-03-01 15:05:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:51,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:51,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294362251] [2022-03-01 15:05:51,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294362251] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:51,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:51,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:05:51,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342556432] [2022-03-01 15:05:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:51,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:05:51,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:05:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:05:51,675 INFO L87 Difference]: Start difference. First operand 5549 states and 11369 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:05:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:55,366 INFO L93 Difference]: Finished difference Result 8307 states and 17054 transitions. [2022-03-01 15:05:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:55,366 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:05:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:55,374 INFO L225 Difference]: With dead ends: 8307 [2022-03-01 15:05:55,375 INFO L226 Difference]: Without dead ends: 8307 [2022-03-01 15:05:55,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:05:55,375 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1926 mSDsluCounter, 8841 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 9421 SdHoareTripleChecker+Invalid, 3485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:55,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1926 Valid, 9421 Invalid, 3485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:05:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2022-03-01 15:05:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 5543. [2022-03-01 15:05:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5543 states, 5540 states have (on average 2.05) internal successors, (11357), 5542 states have internal predecessors, (11357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:55,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 11357 transitions. [2022-03-01 15:05:55,434 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 11357 transitions. Word has length 99 [2022-03-01 15:05:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:55,435 INFO L470 AbstractCegarLoop]: Abstraction has 5543 states and 11357 transitions. [2022-03-01 15:05:55,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:05:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 11357 transitions. [2022-03-01 15:05:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:55,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:55,439 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] [2022-03-01 15:05:55,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-01 15:05:55,439 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1910069693, now seen corresponding path program 46 times [2022-03-01 15:05:55,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:55,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805736429] [2022-03-01 15:05:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:05:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:05:56,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:05:56,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805736429] [2022-03-01 15:05:56,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805736429] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:05:56,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:05:56,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:05:56,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969221184] [2022-03-01 15:05:56,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:05:56,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:05:56,058 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:05:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:05:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:05:56,059 INFO L87 Difference]: Start difference. First operand 5543 states and 11357 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:05:59,795 INFO L93 Difference]: Finished difference Result 8375 states and 17190 transitions. [2022-03-01 15:05:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:05:59,796 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:05:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:05:59,806 INFO L225 Difference]: With dead ends: 8375 [2022-03-01 15:05:59,806 INFO L226 Difference]: Without dead ends: 8375 [2022-03-01 15:05:59,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:05:59,807 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1601 mSDsluCounter, 9881 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 10463 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:05:59,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 10463 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:05:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8375 states. [2022-03-01 15:05:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8375 to 5541. [2022-03-01 15:05:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 5538 states have (on average 2.0500180570603104) internal successors, (11353), 5540 states have internal predecessors, (11353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:05:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 11353 transitions. [2022-03-01 15:05:59,921 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 11353 transitions. Word has length 99 [2022-03-01 15:05:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:05:59,921 INFO L470 AbstractCegarLoop]: Abstraction has 5541 states and 11353 transitions. [2022-03-01 15:05:59,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:05:59,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 11353 transitions. [2022-03-01 15:05:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:05:59,925 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:05:59,925 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] [2022-03-01 15:05:59,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-01 15:05:59,925 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:05:59,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:05:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1959007845, now seen corresponding path program 47 times [2022-03-01 15:05:59,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:05:59,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372133224] [2022-03-01 15:05:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:05:59,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:05:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:00,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:00,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372133224] [2022-03-01 15:06:00,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372133224] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:00,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:00,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:00,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033019239] [2022-03-01 15:06:00,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:00,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:00,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:00,485 INFO L87 Difference]: Start difference. First operand 5541 states and 11353 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:03,752 INFO L93 Difference]: Finished difference Result 7816 states and 16036 transitions. [2022-03-01 15:06:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:03,761 INFO L225 Difference]: With dead ends: 7816 [2022-03-01 15:06:03,761 INFO L226 Difference]: Without dead ends: 7816 [2022-03-01 15:06:03,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:03,762 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1577 mSDsluCounter, 9497 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:03,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 10067 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:06:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7816 states. [2022-03-01 15:06:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7816 to 5558. [2022-03-01 15:06:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5555 states have (on average 2.04986498649865) internal successors, (11387), 5557 states have internal predecessors, (11387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 11387 transitions. [2022-03-01 15:06:03,819 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 11387 transitions. Word has length 99 [2022-03-01 15:06:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:03,819 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 11387 transitions. [2022-03-01 15:06:03,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 11387 transitions. [2022-03-01 15:06:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:03,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:03,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:06:03,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-01 15:06:03,824 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:03,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1893386159, now seen corresponding path program 48 times [2022-03-01 15:06:03,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:03,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824652398] [2022-03-01 15:06:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:04,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:04,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824652398] [2022-03-01 15:06:04,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824652398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:04,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:04,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:04,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363110114] [2022-03-01 15:06:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:04,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:04,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:04,408 INFO L87 Difference]: Start difference. First operand 5558 states and 11387 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:07,910 INFO L93 Difference]: Finished difference Result 7782 states and 15985 transitions. [2022-03-01 15:06:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:07,911 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:07,919 INFO L225 Difference]: With dead ends: 7782 [2022-03-01 15:06:07,919 INFO L226 Difference]: Without dead ends: 7782 [2022-03-01 15:06:07,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:07,920 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1607 mSDsluCounter, 8877 mSDsCounter, 0 mSdLazyCounter, 3272 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 9453 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:07,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 9453 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:06:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2022-03-01 15:06:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 5596. [2022-03-01 15:06:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5593 states have (on average 2.049883783300554) internal successors, (11465), 5595 states have internal predecessors, (11465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 11465 transitions. [2022-03-01 15:06:07,975 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 11465 transitions. Word has length 99 [2022-03-01 15:06:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:07,975 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 11465 transitions. [2022-03-01 15:06:07,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 11465 transitions. [2022-03-01 15:06:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:07,978 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:07,979 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] [2022-03-01 15:06:07,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-01 15:06:07,979 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1986029671, now seen corresponding path program 49 times [2022-03-01 15:06:07,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:07,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793711212] [2022-03-01 15:06:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:07,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:08,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:08,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793711212] [2022-03-01 15:06:08,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793711212] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:08,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:08,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:06:08,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563550259] [2022-03-01 15:06:08,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:08,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:06:08,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:06:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:06:08,676 INFO L87 Difference]: Start difference. First operand 5596 states and 11465 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:06:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:13,259 INFO L93 Difference]: Finished difference Result 9752 states and 20036 transitions. [2022-03-01 15:06:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:06:13,259 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:06:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:13,269 INFO L225 Difference]: With dead ends: 9752 [2022-03-01 15:06:13,269 INFO L226 Difference]: Without dead ends: 9752 [2022-03-01 15:06:13,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:06:13,270 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1629 mSDsluCounter, 11372 mSDsCounter, 0 mSdLazyCounter, 4105 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 11994 SdHoareTripleChecker+Invalid, 4144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:13,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 11994 Invalid, 4144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4105 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:06:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9752 states. [2022-03-01 15:06:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9752 to 5598. [2022-03-01 15:06:13,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5595 states have (on average 2.0498659517426274) internal successors, (11469), 5597 states have internal predecessors, (11469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 11469 transitions. [2022-03-01 15:06:13,329 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 11469 transitions. Word has length 99 [2022-03-01 15:06:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:13,329 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 11469 transitions. [2022-03-01 15:06:13,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:06:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 11469 transitions. [2022-03-01 15:06:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:13,333 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:13,333 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] [2022-03-01 15:06:13,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-01 15:06:13,333 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:13,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash -778860247, now seen corresponding path program 50 times [2022-03-01 15:06:13,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:13,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685556653] [2022-03-01 15:06:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:13,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:13,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685556653] [2022-03-01 15:06:13,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685556653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:13,863 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:13,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:13,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567098483] [2022-03-01 15:06:13,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:13,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:13,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:13,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:13,864 INFO L87 Difference]: Start difference. First operand 5598 states and 11469 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:17,804 INFO L93 Difference]: Finished difference Result 7845 states and 16094 transitions. [2022-03-01 15:06:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:17,812 INFO L225 Difference]: With dead ends: 7845 [2022-03-01 15:06:17,812 INFO L226 Difference]: Without dead ends: 7845 [2022-03-01 15:06:17,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:17,813 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1590 mSDsluCounter, 9446 mSDsCounter, 0 mSdLazyCounter, 3463 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 10036 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:17,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 10036 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3463 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:06:17,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2022-03-01 15:06:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 5580. [2022-03-01 15:06:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5580 states, 5577 states have (on average 2.049668280437511) internal successors, (11431), 5579 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5580 states to 5580 states and 11431 transitions. [2022-03-01 15:06:17,864 INFO L78 Accepts]: Start accepts. Automaton has 5580 states and 11431 transitions. Word has length 99 [2022-03-01 15:06:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:17,864 INFO L470 AbstractCegarLoop]: Abstraction has 5580 states and 11431 transitions. [2022-03-01 15:06:17,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:17,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5580 states and 11431 transitions. [2022-03-01 15:06:17,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:17,868 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:17,868 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] [2022-03-01 15:06:17,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-01 15:06:17,868 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash 830990703, now seen corresponding path program 51 times [2022-03-01 15:06:17,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:17,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938199168] [2022-03-01 15:06:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:17,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:18,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:18,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938199168] [2022-03-01 15:06:18,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938199168] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:18,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:18,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:18,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881549056] [2022-03-01 15:06:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:18,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:18,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:18,532 INFO L87 Difference]: Start difference. First operand 5580 states and 11431 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:22,055 INFO L93 Difference]: Finished difference Result 7867 states and 16155 transitions. [2022-03-01 15:06:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:22,055 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:22,063 INFO L225 Difference]: With dead ends: 7867 [2022-03-01 15:06:22,063 INFO L226 Difference]: Without dead ends: 7867 [2022-03-01 15:06:22,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:22,064 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1571 mSDsluCounter, 9981 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 10561 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:22,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 10561 Invalid, 3888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:06:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7867 states. [2022-03-01 15:06:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7867 to 5578. [2022-03-01 15:06:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5575 states have (on average 2.0496860986547083) internal successors, (11427), 5577 states have internal predecessors, (11427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 11427 transitions. [2022-03-01 15:06:22,120 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 11427 transitions. Word has length 99 [2022-03-01 15:06:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:22,120 INFO L470 AbstractCegarLoop]: Abstraction has 5578 states and 11427 transitions. [2022-03-01 15:06:22,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 11427 transitions. [2022-03-01 15:06:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:22,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:22,124 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] [2022-03-01 15:06:22,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-01 15:06:22,124 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1351459183, now seen corresponding path program 52 times [2022-03-01 15:06:22,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:22,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386970583] [2022-03-01 15:06:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:22,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:22,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386970583] [2022-03-01 15:06:22,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386970583] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:22,898 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:22,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:22,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18505529] [2022-03-01 15:06:22,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:22,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:22,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:22,899 INFO L87 Difference]: Start difference. First operand 5578 states and 11427 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:26,646 INFO L93 Difference]: Finished difference Result 7918 states and 16257 transitions. [2022-03-01 15:06:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:26,654 INFO L225 Difference]: With dead ends: 7918 [2022-03-01 15:06:26,654 INFO L226 Difference]: Without dead ends: 7918 [2022-03-01 15:06:26,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:26,654 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1769 mSDsluCounter, 9778 mSDsCounter, 0 mSdLazyCounter, 3720 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 10357 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:26,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 10357 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3720 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:06:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-03-01 15:06:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 5574. [2022-03-01 15:06:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5571 states have (on average 2.049721773469754) internal successors, (11419), 5573 states have internal predecessors, (11419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 11419 transitions. [2022-03-01 15:06:26,705 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 11419 transitions. Word has length 99 [2022-03-01 15:06:26,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:26,705 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 11419 transitions. [2022-03-01 15:06:26,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 11419 transitions. [2022-03-01 15:06:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:26,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:26,709 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] [2022-03-01 15:06:26,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-01 15:06:26,709 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 372023121, now seen corresponding path program 53 times [2022-03-01 15:06:26,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:26,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475338832] [2022-03-01 15:06:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:27,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:27,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475338832] [2022-03-01 15:06:27,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475338832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:27,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:27,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:27,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325752114] [2022-03-01 15:06:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:27,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:27,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:27,529 INFO L87 Difference]: Start difference. First operand 5574 states and 11419 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:31,536 INFO L93 Difference]: Finished difference Result 8003 states and 16427 transitions. [2022-03-01 15:06:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:31,546 INFO L225 Difference]: With dead ends: 8003 [2022-03-01 15:06:31,546 INFO L226 Difference]: Without dead ends: 8003 [2022-03-01 15:06:31,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:31,546 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1603 mSDsluCounter, 9891 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 10474 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:31,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 10474 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3755 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:06:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8003 states. [2022-03-01 15:06:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8003 to 5568. [2022-03-01 15:06:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 5565 states have (on average 2.0497753818508535) internal successors, (11407), 5567 states have internal predecessors, (11407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 11407 transitions. [2022-03-01 15:06:31,608 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 11407 transitions. Word has length 99 [2022-03-01 15:06:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:31,608 INFO L470 AbstractCegarLoop]: Abstraction has 5568 states and 11407 transitions. [2022-03-01 15:06:31,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 11407 transitions. [2022-03-01 15:06:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:31,635 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:31,635 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] [2022-03-01 15:06:31,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-01 15:06:31,635 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:31,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash -856527825, now seen corresponding path program 54 times [2022-03-01 15:06:31,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:31,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687356689] [2022-03-01 15:06:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:32,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:32,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687356689] [2022-03-01 15:06:32,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687356689] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:32,201 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:32,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:32,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285035748] [2022-03-01 15:06:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:32,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:32,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:32,202 INFO L87 Difference]: Start difference. First operand 5568 states and 11407 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:35,356 INFO L93 Difference]: Finished difference Result 8071 states and 16563 transitions. [2022-03-01 15:06:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:35,356 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:35,366 INFO L225 Difference]: With dead ends: 8071 [2022-03-01 15:06:35,366 INFO L226 Difference]: Without dead ends: 8071 [2022-03-01 15:06:35,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:35,367 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1621 mSDsluCounter, 9550 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 10135 SdHoareTripleChecker+Invalid, 3516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:35,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 10135 Invalid, 3516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3482 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:06:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2022-03-01 15:06:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 5566. [2022-03-01 15:06:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5563 states have (on average 2.049793277008808) internal successors, (11403), 5565 states have internal predecessors, (11403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 11403 transitions. [2022-03-01 15:06:35,429 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 11403 transitions. Word has length 99 [2022-03-01 15:06:35,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:35,430 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 11403 transitions. [2022-03-01 15:06:35,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 11403 transitions. [2022-03-01 15:06:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:35,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:35,434 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] [2022-03-01 15:06:35,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-01 15:06:35,434 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1282417583, now seen corresponding path program 55 times [2022-03-01 15:06:35,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:35,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410389752] [2022-03-01 15:06:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:35,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:36,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:36,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410389752] [2022-03-01 15:06:36,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410389752] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:36,156 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:36,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:36,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307693194] [2022-03-01 15:06:36,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:36,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:36,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:36,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:36,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:36,157 INFO L87 Difference]: Start difference. First operand 5566 states and 11403 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:39,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:39,575 INFO L93 Difference]: Finished difference Result 8105 states and 16631 transitions. [2022-03-01 15:06:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:39,575 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:39,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:39,584 INFO L225 Difference]: With dead ends: 8105 [2022-03-01 15:06:39,584 INFO L226 Difference]: Without dead ends: 8105 [2022-03-01 15:06:39,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:39,585 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1514 mSDsluCounter, 10372 mSDsCounter, 0 mSdLazyCounter, 3905 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 10958 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:39,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 10958 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3905 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:06:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8105 states. [2022-03-01 15:06:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8105 to 5564. [2022-03-01 15:06:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5561 states have (on average 2.049811185038662) internal successors, (11399), 5563 states have internal predecessors, (11399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 11399 transitions. [2022-03-01 15:06:39,644 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 11399 transitions. Word has length 99 [2022-03-01 15:06:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:39,644 INFO L470 AbstractCegarLoop]: Abstraction has 5564 states and 11399 transitions. [2022-03-01 15:06:39,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 11399 transitions. [2022-03-01 15:06:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:39,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:39,648 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] [2022-03-01 15:06:39,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-01 15:06:39,648 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1718301777, now seen corresponding path program 56 times [2022-03-01 15:06:39,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:39,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615132323] [2022-03-01 15:06:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:40,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:40,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615132323] [2022-03-01 15:06:40,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615132323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:40,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:40,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:40,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526737530] [2022-03-01 15:06:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:40,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:40,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:40,312 INFO L87 Difference]: Start difference. First operand 5564 states and 11399 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:43,674 INFO L93 Difference]: Finished difference Result 7510 states and 15405 transitions. [2022-03-01 15:06:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:43,674 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:43,681 INFO L225 Difference]: With dead ends: 7510 [2022-03-01 15:06:43,682 INFO L226 Difference]: Without dead ends: 7510 [2022-03-01 15:06:43,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:06:43,682 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1551 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 9762 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:43,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 9762 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 15:06:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7510 states. [2022-03-01 15:06:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7510 to 5615. [2022-03-01 15:06:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5612 states have (on average 2.04935851746258) internal successors, (11501), 5614 states have internal predecessors, (11501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 11501 transitions. [2022-03-01 15:06:43,737 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 11501 transitions. Word has length 99 [2022-03-01 15:06:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:43,737 INFO L470 AbstractCegarLoop]: Abstraction has 5615 states and 11501 transitions. [2022-03-01 15:06:43,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 11501 transitions. [2022-03-01 15:06:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:43,741 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:43,741 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] [2022-03-01 15:06:43,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-01 15:06:43,741 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash -86186341, now seen corresponding path program 57 times [2022-03-01 15:06:43,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:43,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57588178] [2022-03-01 15:06:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:43,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:44,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:44,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57588178] [2022-03-01 15:06:44,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57588178] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:44,530 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:44,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:06:44,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388160900] [2022-03-01 15:06:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:06:44,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:06:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:06:44,530 INFO L87 Difference]: Start difference. First operand 5615 states and 11501 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:06:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:48,127 INFO L93 Difference]: Finished difference Result 7293 states and 14970 transitions. [2022-03-01 15:06:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:48,128 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:06:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:48,135 INFO L225 Difference]: With dead ends: 7293 [2022-03-01 15:06:48,136 INFO L226 Difference]: Without dead ends: 7293 [2022-03-01 15:06:48,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:06:48,136 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1616 mSDsluCounter, 10109 mSDsCounter, 0 mSdLazyCounter, 3844 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 10661 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:48,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1616 Valid, 10661 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3844 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:06:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7293 states. [2022-03-01 15:06:48,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7293 to 5639. [2022-03-01 15:06:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 5636 states have (on average 2.049680624556423) internal successors, (11552), 5638 states have internal predecessors, (11552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 11552 transitions. [2022-03-01 15:06:48,195 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 11552 transitions. Word has length 99 [2022-03-01 15:06:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:48,195 INFO L470 AbstractCegarLoop]: Abstraction has 5639 states and 11552 transitions. [2022-03-01 15:06:48,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:06:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 11552 transitions. [2022-03-01 15:06:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:48,200 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:48,200 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] [2022-03-01 15:06:48,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-01 15:06:48,200 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash -178829853, now seen corresponding path program 58 times [2022-03-01 15:06:48,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:48,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703306212] [2022-03-01 15:06:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:48,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:48,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703306212] [2022-03-01 15:06:48,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703306212] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:48,942 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:48,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:48,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323553878] [2022-03-01 15:06:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:48,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:48,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:48,942 INFO L87 Difference]: Start difference. First operand 5639 states and 11552 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:52,695 INFO L93 Difference]: Finished difference Result 9352 states and 19216 transitions. [2022-03-01 15:06:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:06:52,696 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:06:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:52,705 INFO L225 Difference]: With dead ends: 9352 [2022-03-01 15:06:52,705 INFO L226 Difference]: Without dead ends: 9352 [2022-03-01 15:06:52,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:06:52,705 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1695 mSDsluCounter, 9716 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 10314 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:52,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1695 Valid, 10314 Invalid, 3620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3585 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:06:52,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2022-03-01 15:06:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 5641. [2022-03-01 15:06:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5641 states, 5638 states have (on average 2.049663001064207) internal successors, (11556), 5640 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5641 states to 5641 states and 11556 transitions. [2022-03-01 15:06:52,764 INFO L78 Accepts]: Start accepts. Automaton has 5641 states and 11556 transitions. Word has length 99 [2022-03-01 15:06:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:52,764 INFO L470 AbstractCegarLoop]: Abstraction has 5641 states and 11556 transitions. [2022-03-01 15:06:52,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:06:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5641 states and 11556 transitions. [2022-03-01 15:06:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:52,768 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:52,768 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] [2022-03-01 15:06:52,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-01 15:06:52,769 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1028339571, now seen corresponding path program 59 times [2022-03-01 15:06:52,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:52,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719088] [2022-03-01 15:06:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:53,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:53,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719088] [2022-03-01 15:06:53,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719088] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:53,377 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:53,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:06:53,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885274103] [2022-03-01 15:06:53,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:53,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:06:53,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:53,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:06:53,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:06:53,378 INFO L87 Difference]: Start difference. First operand 5641 states and 11556 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:06:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:06:56,991 INFO L93 Difference]: Finished difference Result 7394 states and 15174 transitions. [2022-03-01 15:06:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:06:56,992 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:06:56,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:06:56,999 INFO L225 Difference]: With dead ends: 7394 [2022-03-01 15:06:56,999 INFO L226 Difference]: Without dead ends: 7394 [2022-03-01 15:06:56,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:06:56,999 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1642 mSDsluCounter, 9997 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 10563 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:06:56,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 10563 Invalid, 3780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3737 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:06:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7394 states. [2022-03-01 15:06:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7394 to 5623. [2022-03-01 15:06:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5623 states, 5620 states have (on average 2.0494661921708186) internal successors, (11518), 5622 states have internal predecessors, (11518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:06:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5623 states to 5623 states and 11518 transitions. [2022-03-01 15:06:57,053 INFO L78 Accepts]: Start accepts. Automaton has 5623 states and 11518 transitions. Word has length 99 [2022-03-01 15:06:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:06:57,053 INFO L470 AbstractCegarLoop]: Abstraction has 5623 states and 11518 transitions. [2022-03-01 15:06:57,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:06:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5623 states and 11518 transitions. [2022-03-01 15:06:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:06:57,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:06:57,057 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] [2022-03-01 15:06:57,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-01 15:06:57,058 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:06:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:06:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash -966883357, now seen corresponding path program 60 times [2022-03-01 15:06:57,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:06:57,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482952362] [2022-03-01 15:06:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:06:57,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:06:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:06:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:06:57,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:06:57,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482952362] [2022-03-01 15:06:57,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482952362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:06:57,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:06:57,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:06:57,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155145889] [2022-03-01 15:06:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:06:57,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:06:57,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:06:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:06:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:06:57,697 INFO L87 Difference]: Start difference. First operand 5623 states and 11518 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:01,829 INFO L93 Difference]: Finished difference Result 9404 states and 19306 transitions. [2022-03-01 15:07:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:07:01,829 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:01,838 INFO L225 Difference]: With dead ends: 9404 [2022-03-01 15:07:01,838 INFO L226 Difference]: Without dead ends: 9404 [2022-03-01 15:07:01,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1144, Invalid=5176, Unknown=0, NotChecked=0, Total=6320 [2022-03-01 15:07:01,839 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1854 mSDsluCounter, 10372 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 10979 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:01,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1854 Valid, 10979 Invalid, 3625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:07:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2022-03-01 15:07:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 5627. [2022-03-01 15:07:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5627 states, 5624 states have (on average 2.049431009957326) internal successors, (11526), 5626 states have internal predecessors, (11526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 11526 transitions. [2022-03-01 15:07:01,900 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 11526 transitions. Word has length 99 [2022-03-01 15:07:01,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:01,900 INFO L470 AbstractCegarLoop]: Abstraction has 5627 states and 11526 transitions. [2022-03-01 15:07:01,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:01,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 11526 transitions. [2022-03-01 15:07:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:01,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:01,904 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] [2022-03-01 15:07:01,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-01 15:07:01,904 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:01,905 INFO L85 PathProgramCache]: Analyzing trace with hash -988076429, now seen corresponding path program 61 times [2022-03-01 15:07:01,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:01,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979546052] [2022-03-01 15:07:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:02,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:02,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979546052] [2022-03-01 15:07:02,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979546052] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:02,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:02,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:02,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30306184] [2022-03-01 15:07:02,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:02,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:02,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:02,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:02,619 INFO L87 Difference]: Start difference. First operand 5627 states and 11526 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:06,270 INFO L93 Difference]: Finished difference Result 8431 states and 17313 transitions. [2022-03-01 15:07:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:07:06,270 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:06,280 INFO L225 Difference]: With dead ends: 8431 [2022-03-01 15:07:06,280 INFO L226 Difference]: Without dead ends: 8431 [2022-03-01 15:07:06,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1044, Invalid=4962, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:07:06,281 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1766 mSDsluCounter, 9791 mSDsCounter, 0 mSdLazyCounter, 3534 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 10381 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:06,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 10381 Invalid, 3570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3534 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:07:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2022-03-01 15:07:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 5629. [2022-03-01 15:07:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5629 states, 5626 states have (on average 2.0494134376110913) internal successors, (11530), 5628 states have internal predecessors, (11530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 11530 transitions. [2022-03-01 15:07:06,371 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 11530 transitions. Word has length 99 [2022-03-01 15:07:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:06,371 INFO L470 AbstractCegarLoop]: Abstraction has 5629 states and 11530 transitions. [2022-03-01 15:07:06,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 11530 transitions. [2022-03-01 15:07:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:06,375 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:06,375 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] [2022-03-01 15:07:06,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-01 15:07:06,375 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1472913395, now seen corresponding path program 62 times [2022-03-01 15:07:06,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:06,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455289084] [2022-03-01 15:07:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:06,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:07,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:07,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455289084] [2022-03-01 15:07:07,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455289084] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:07,218 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:07,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:07,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312842261] [2022-03-01 15:07:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:07,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:07,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:07,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:07,219 INFO L87 Difference]: Start difference. First operand 5629 states and 11530 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:11,215 INFO L93 Difference]: Finished difference Result 7386 states and 15159 transitions. [2022-03-01 15:07:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:07:11,216 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:11,224 INFO L225 Difference]: With dead ends: 7386 [2022-03-01 15:07:11,224 INFO L226 Difference]: Without dead ends: 7386 [2022-03-01 15:07:11,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=935, Invalid=4615, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:07:11,225 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1459 mSDsluCounter, 9266 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 9832 SdHoareTripleChecker+Invalid, 3424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:11,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1459 Valid, 9832 Invalid, 3424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:07:11,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7386 states. [2022-03-01 15:07:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7386 to 5627. [2022-03-01 15:07:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5627 states, 5624 states have (on average 2.049431009957326) internal successors, (11526), 5626 states have internal predecessors, (11526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 11526 transitions. [2022-03-01 15:07:11,280 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 11526 transitions. Word has length 99 [2022-03-01 15:07:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:11,280 INFO L470 AbstractCegarLoop]: Abstraction has 5627 states and 11526 transitions. [2022-03-01 15:07:11,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 11526 transitions. [2022-03-01 15:07:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:11,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:11,284 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] [2022-03-01 15:07:11,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-01 15:07:11,284 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1628672577, now seen corresponding path program 63 times [2022-03-01 15:07:11,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:11,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715523239] [2022-03-01 15:07:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:12,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:12,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715523239] [2022-03-01 15:07:12,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715523239] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:12,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:12,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:12,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986802437] [2022-03-01 15:07:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:12,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:12,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:12,052 INFO L87 Difference]: Start difference. First operand 5627 states and 11526 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:16,705 INFO L93 Difference]: Finished difference Result 7782 states and 15930 transitions. [2022-03-01 15:07:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 15:07:16,706 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:16,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:16,715 INFO L225 Difference]: With dead ends: 7782 [2022-03-01 15:07:16,715 INFO L226 Difference]: Without dead ends: 7782 [2022-03-01 15:07:16,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1236, Invalid=5570, Unknown=0, NotChecked=0, Total=6806 [2022-03-01 15:07:16,716 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1827 mSDsluCounter, 10822 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 11412 SdHoareTripleChecker+Invalid, 3848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:16,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1827 Valid, 11412 Invalid, 3848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:07:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2022-03-01 15:07:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 5642. [2022-03-01 15:07:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5639 states have (on average 2.0492995211917004) internal successors, (11556), 5641 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 11556 transitions. [2022-03-01 15:07:16,773 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 11556 transitions. Word has length 99 [2022-03-01 15:07:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:16,773 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 11556 transitions. [2022-03-01 15:07:16,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 11556 transitions. [2022-03-01 15:07:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:16,777 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:16,777 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] [2022-03-01 15:07:16,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-01 15:07:16,778 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1781291341, now seen corresponding path program 64 times [2022-03-01 15:07:16,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:16,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46755328] [2022-03-01 15:07:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:17,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:17,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46755328] [2022-03-01 15:07:17,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46755328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:17,310 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:17,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:17,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265790819] [2022-03-01 15:07:17,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:17,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:17,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:17,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:17,311 INFO L87 Difference]: Start difference. First operand 5642 states and 11556 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:21,352 INFO L93 Difference]: Finished difference Result 8230 states and 16877 transitions. [2022-03-01 15:07:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:07:21,353 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:21,362 INFO L225 Difference]: With dead ends: 8230 [2022-03-01 15:07:21,362 INFO L226 Difference]: Without dead ends: 8230 [2022-03-01 15:07:21,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1157, Invalid=5323, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 15:07:21,363 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1945 mSDsluCounter, 10420 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 11010 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:21,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1945 Valid, 11010 Invalid, 3832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:07:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2022-03-01 15:07:21,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 5643. [2022-03-01 15:07:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5643 states, 5640 states have (on average 2.049290780141844) internal successors, (11558), 5642 states have internal predecessors, (11558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5643 states to 5643 states and 11558 transitions. [2022-03-01 15:07:21,468 INFO L78 Accepts]: Start accepts. Automaton has 5643 states and 11558 transitions. Word has length 99 [2022-03-01 15:07:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:21,468 INFO L470 AbstractCegarLoop]: Abstraction has 5643 states and 11558 transitions. [2022-03-01 15:07:21,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5643 states and 11558 transitions. [2022-03-01 15:07:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:21,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:21,473 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] [2022-03-01 15:07:21,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-01 15:07:21,473 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1760098269, now seen corresponding path program 65 times [2022-03-01 15:07:21,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:21,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549585236] [2022-03-01 15:07:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:22,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:22,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549585236] [2022-03-01 15:07:22,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549585236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:22,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:22,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:22,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330632827] [2022-03-01 15:07:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:22,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:22,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:22,261 INFO L87 Difference]: Start difference. First operand 5643 states and 11558 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:26,089 INFO L93 Difference]: Finished difference Result 8143 states and 16700 transitions. [2022-03-01 15:07:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:07:26,089 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:26,099 INFO L225 Difference]: With dead ends: 8143 [2022-03-01 15:07:26,099 INFO L226 Difference]: Without dead ends: 8143 [2022-03-01 15:07:26,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1038, Invalid=4968, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:07:26,100 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1950 mSDsluCounter, 9908 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 10475 SdHoareTripleChecker+Invalid, 3634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:26,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 10475 Invalid, 3634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:07:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2022-03-01 15:07:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 5645. [2022-03-01 15:07:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5642 states have (on average 2.0492733073378235) internal successors, (11562), 5644 states have internal predecessors, (11562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 11562 transitions. [2022-03-01 15:07:26,165 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 11562 transitions. Word has length 99 [2022-03-01 15:07:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:26,165 INFO L470 AbstractCegarLoop]: Abstraction has 5645 states and 11562 transitions. [2022-03-01 15:07:26,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 11562 transitions. [2022-03-01 15:07:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:26,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:26,170 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] [2022-03-01 15:07:26,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-01 15:07:26,170 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:26,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash -73879203, now seen corresponding path program 66 times [2022-03-01 15:07:26,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:26,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638876302] [2022-03-01 15:07:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:26,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:26,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638876302] [2022-03-01 15:07:26,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638876302] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:26,686 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:26,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-01 15:07:26,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874890729] [2022-03-01 15:07:26,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:26,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:07:26,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:07:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:07:26,686 INFO L87 Difference]: Start difference. First operand 5645 states and 11562 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:07:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:29,612 INFO L93 Difference]: Finished difference Result 7098 states and 14546 transitions. [2022-03-01 15:07:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 15:07:29,612 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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 [2022-03-01 15:07:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:29,619 INFO L225 Difference]: With dead ends: 7098 [2022-03-01 15:07:29,619 INFO L226 Difference]: Without dead ends: 7098 [2022-03-01 15:07:29,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=897, Invalid=4359, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 15:07:29,620 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1499 mSDsluCounter, 8150 mSDsCounter, 0 mSdLazyCounter, 2932 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 8677 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:29,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 8677 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2932 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 15:07:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7098 states. [2022-03-01 15:07:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7098 to 5642. [2022-03-01 15:07:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5639 states have (on average 2.0492995211917004) internal successors, (11556), 5641 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 11556 transitions. [2022-03-01 15:07:29,676 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 11556 transitions. Word has length 99 [2022-03-01 15:07:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:29,676 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 11556 transitions. [2022-03-01 15:07:29,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:07:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 11556 transitions. [2022-03-01 15:07:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:29,680 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:29,680 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] [2022-03-01 15:07:29,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-01 15:07:29,680 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:29,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1594576337, now seen corresponding path program 67 times [2022-03-01 15:07:29,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:29,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258217424] [2022-03-01 15:07:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:29,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:30,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:30,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258217424] [2022-03-01 15:07:30,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258217424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:30,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:30,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:30,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038840624] [2022-03-01 15:07:30,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:30,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:30,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:30,431 INFO L87 Difference]: Start difference. First operand 5642 states and 11556 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:33,985 INFO L93 Difference]: Finished difference Result 7482 states and 15367 transitions. [2022-03-01 15:07:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:07:33,985 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:33,992 INFO L225 Difference]: With dead ends: 7482 [2022-03-01 15:07:33,992 INFO L226 Difference]: Without dead ends: 7482 [2022-03-01 15:07:33,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:07:33,993 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1608 mSDsluCounter, 9866 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 10423 SdHoareTripleChecker+Invalid, 3871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:33,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 10423 Invalid, 3871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:07:33,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-03-01 15:07:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 5658. [2022-03-01 15:07:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5658 states, 5655 states have (on average 2.0495137046861185) internal successors, (11590), 5657 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 11590 transitions. [2022-03-01 15:07:34,052 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 11590 transitions. Word has length 99 [2022-03-01 15:07:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:34,052 INFO L470 AbstractCegarLoop]: Abstraction has 5658 states and 11590 transitions. [2022-03-01 15:07:34,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 11590 transitions. [2022-03-01 15:07:34,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:34,056 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:34,056 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] [2022-03-01 15:07:34,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-01 15:07:34,056 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:34,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1687219849, now seen corresponding path program 68 times [2022-03-01 15:07:34,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:34,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161285255] [2022-03-01 15:07:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:34,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:34,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:34,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161285255] [2022-03-01 15:07:34,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161285255] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:34,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:34,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:07:34,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576372612] [2022-03-01 15:07:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:34,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:07:34,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:07:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:07:34,724 INFO L87 Difference]: Start difference. First operand 5658 states and 11590 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:07:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:39,486 INFO L93 Difference]: Finished difference Result 9541 states and 19613 transitions. [2022-03-01 15:07:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:07:39,487 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:07:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:39,497 INFO L225 Difference]: With dead ends: 9541 [2022-03-01 15:07:39,497 INFO L226 Difference]: Without dead ends: 9541 [2022-03-01 15:07:39,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:07:39,498 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1558 mSDsluCounter, 11755 mSDsCounter, 0 mSdLazyCounter, 4463 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 12358 SdHoareTripleChecker+Invalid, 4501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:39,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 12358 Invalid, 4501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4463 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 15:07:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2022-03-01 15:07:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 5660. [2022-03-01 15:07:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5660 states, 5657 states have (on average 2.0494961993989746) internal successors, (11594), 5659 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 11594 transitions. [2022-03-01 15:07:39,561 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 11594 transitions. Word has length 99 [2022-03-01 15:07:39,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:39,561 INFO L470 AbstractCegarLoop]: Abstraction has 5660 states and 11594 transitions. [2022-03-01 15:07:39,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:07:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 11594 transitions. [2022-03-01 15:07:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:39,565 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:39,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:07:39,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-01 15:07:39,565 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:39,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:39,565 INFO L85 PathProgramCache]: Analyzing trace with hash -480050425, now seen corresponding path program 69 times [2022-03-01 15:07:39,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:39,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368089530] [2022-03-01 15:07:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:39,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:40,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:40,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368089530] [2022-03-01 15:07:40,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368089530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:40,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:40,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:07:40,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094712350] [2022-03-01 15:07:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:40,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:07:40,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:07:40,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:07:40,422 INFO L87 Difference]: Start difference. First operand 5660 states and 11594 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:07:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:45,160 INFO L93 Difference]: Finished difference Result 7583 states and 15571 transitions. [2022-03-01 15:07:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:07:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:07:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:45,168 INFO L225 Difference]: With dead ends: 7583 [2022-03-01 15:07:45,168 INFO L226 Difference]: Without dead ends: 7583 [2022-03-01 15:07:45,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:07:45,169 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1759 mSDsluCounter, 8974 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 9545 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:45,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1759 Valid, 9545 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:07:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-03-01 15:07:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 5642. [2022-03-01 15:07:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5639 states have (on average 2.0492995211917004) internal successors, (11556), 5641 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 11556 transitions. [2022-03-01 15:07:45,220 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 11556 transitions. Word has length 99 [2022-03-01 15:07:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:45,220 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 11556 transitions. [2022-03-01 15:07:45,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:07:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 11556 transitions. [2022-03-01 15:07:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:45,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:45,224 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] [2022-03-01 15:07:45,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-01 15:07:45,224 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:45,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1819693943, now seen corresponding path program 70 times [2022-03-01 15:07:45,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:45,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436278334] [2022-03-01 15:07:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:45,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:45,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436278334] [2022-03-01 15:07:45,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436278334] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:45,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:45,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:45,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128496652] [2022-03-01 15:07:45,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:45,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:45,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:45,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:45,924 INFO L87 Difference]: Start difference. First operand 5642 states and 11556 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:51,647 INFO L93 Difference]: Finished difference Result 9514 states and 19545 transitions. [2022-03-01 15:07:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:07:51,647 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:51,656 INFO L225 Difference]: With dead ends: 9514 [2022-03-01 15:07:51,656 INFO L226 Difference]: Without dead ends: 9514 [2022-03-01 15:07:51,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 15:07:51,657 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1725 mSDsluCounter, 10601 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 11228 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:51,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 11228 Invalid, 3898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3862 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 15:07:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9514 states. [2022-03-01 15:07:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9514 to 5639. [2022-03-01 15:07:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 5636 states have (on average 2.0493257629524484) internal successors, (11550), 5638 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 11550 transitions. [2022-03-01 15:07:51,716 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 11550 transitions. Word has length 99 [2022-03-01 15:07:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:51,716 INFO L470 AbstractCegarLoop]: Abstraction has 5639 states and 11550 transitions. [2022-03-01 15:07:51,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 11550 transitions. [2022-03-01 15:07:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:51,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:51,720 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] [2022-03-01 15:07:51,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-01 15:07:51,720 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1798500871, now seen corresponding path program 71 times [2022-03-01 15:07:51,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:51,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362998175] [2022-03-01 15:07:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:51,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:52,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:52,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362998175] [2022-03-01 15:07:52,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362998175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:52,459 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:52,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:52,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087676305] [2022-03-01 15:07:52,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:52,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:52,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:52,460 INFO L87 Difference]: Start difference. First operand 5639 states and 11550 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:07:57,492 INFO L93 Difference]: Finished difference Result 8537 states and 17524 transitions. [2022-03-01 15:07:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:07:57,493 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:07:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:07:57,501 INFO L225 Difference]: With dead ends: 8537 [2022-03-01 15:07:57,501 INFO L226 Difference]: Without dead ends: 8537 [2022-03-01 15:07:57,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1044, Invalid=4962, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:07:57,502 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1804 mSDsluCounter, 9138 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 9733 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:07:57,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1804 Valid, 9733 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3359 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:07:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2022-03-01 15:07:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 5641. [2022-03-01 15:07:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5641 states, 5638 states have (on average 2.04930826534232) internal successors, (11554), 5640 states have internal predecessors, (11554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:07:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5641 states to 5641 states and 11554 transitions. [2022-03-01 15:07:57,560 INFO L78 Accepts]: Start accepts. Automaton has 5641 states and 11554 transitions. Word has length 99 [2022-03-01 15:07:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:07:57,560 INFO L470 AbstractCegarLoop]: Abstraction has 5641 states and 11554 transitions. [2022-03-01 15:07:57,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:07:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5641 states and 11554 transitions. [2022-03-01 15:07:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:07:57,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:07:57,564 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] [2022-03-01 15:07:57,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-01 15:07:57,564 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:07:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:07:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash -35476601, now seen corresponding path program 72 times [2022-03-01 15:07:57,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:07:57,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611021615] [2022-03-01 15:07:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:07:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:07:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:07:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:07:58,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:07:58,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611021615] [2022-03-01 15:07:58,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611021615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:07:58,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:07:58,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:07:58,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793374868] [2022-03-01 15:07:58,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:07:58,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:07:58,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:07:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:07:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:07:58,385 INFO L87 Difference]: Start difference. First operand 5641 states and 11554 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:03,066 INFO L93 Difference]: Finished difference Result 7492 states and 15370 transitions. [2022-03-01 15:08:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:08:03,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:03,075 INFO L225 Difference]: With dead ends: 7492 [2022-03-01 15:08:03,075 INFO L226 Difference]: Without dead ends: 7492 [2022-03-01 15:08:03,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=935, Invalid=4615, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:08:03,076 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1519 mSDsluCounter, 9251 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 9822 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:03,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 9822 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3446 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:08:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-03-01 15:08:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 5630. [2022-03-01 15:08:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5627 states have (on average 2.0492269415318995) internal successors, (11531), 5629 states have internal predecessors, (11531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 11531 transitions. [2022-03-01 15:08:03,165 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 11531 transitions. Word has length 99 [2022-03-01 15:08:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:03,165 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 11531 transitions. [2022-03-01 15:08:03,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 11531 transitions. [2022-03-01 15:08:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:03,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:03,169 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] [2022-03-01 15:08:03,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-01 15:08:03,169 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash -67592007, now seen corresponding path program 73 times [2022-03-01 15:08:03,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:03,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397318922] [2022-03-01 15:08:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:03,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:04,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:04,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397318922] [2022-03-01 15:08:04,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397318922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:04,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:04,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:04,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952501596] [2022-03-01 15:08:04,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:04,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:04,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:04,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:04,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:04,002 INFO L87 Difference]: Start difference. First operand 5630 states and 11531 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:08,117 INFO L93 Difference]: Finished difference Result 7452 states and 15304 transitions. [2022-03-01 15:08:08,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:08:08,117 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:08,126 INFO L225 Difference]: With dead ends: 7452 [2022-03-01 15:08:08,126 INFO L226 Difference]: Without dead ends: 7452 [2022-03-01 15:08:08,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:08:08,127 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1552 mSDsluCounter, 10482 mSDsCounter, 0 mSdLazyCounter, 4228 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 11038 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:08,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 11038 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4228 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:08:08,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7452 states. [2022-03-01 15:08:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7452 to 5630. [2022-03-01 15:08:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5627 states have (on average 2.0492269415318995) internal successors, (11531), 5629 states have internal predecessors, (11531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 11531 transitions. [2022-03-01 15:08:08,212 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 11531 transitions. Word has length 99 [2022-03-01 15:08:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:08,212 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 11531 transitions. [2022-03-01 15:08:08,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 11531 transitions. [2022-03-01 15:08:08,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:08,217 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:08,217 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] [2022-03-01 15:08:08,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-01 15:08:08,217 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:08,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:08,217 INFO L85 PathProgramCache]: Analyzing trace with hash -160235519, now seen corresponding path program 74 times [2022-03-01 15:08:08,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:08,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330612503] [2022-03-01 15:08:08,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:08,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:08,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330612503] [2022-03-01 15:08:08,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330612503] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:08,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:08,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:08,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442692325] [2022-03-01 15:08:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:08,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:08,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:08,769 INFO L87 Difference]: Start difference. First operand 5630 states and 11531 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:12,432 INFO L93 Difference]: Finished difference Result 9342 states and 19193 transitions. [2022-03-01 15:08:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:08:12,433 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:12,462 INFO L225 Difference]: With dead ends: 9342 [2022-03-01 15:08:12,462 INFO L226 Difference]: Without dead ends: 9342 [2022-03-01 15:08:12,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:08:12,463 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1642 mSDsluCounter, 9711 mSDsCounter, 0 mSdLazyCounter, 3693 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 10313 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:12,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 10313 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3693 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:08:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9342 states. [2022-03-01 15:08:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9342 to 5624. [2022-03-01 15:08:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5624 states, 5621 states have (on average 2.049279487635652) internal successors, (11519), 5623 states have internal predecessors, (11519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5624 states to 5624 states and 11519 transitions. [2022-03-01 15:08:12,550 INFO L78 Accepts]: Start accepts. Automaton has 5624 states and 11519 transitions. Word has length 99 [2022-03-01 15:08:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:12,550 INFO L470 AbstractCegarLoop]: Abstraction has 5624 states and 11519 transitions. [2022-03-01 15:08:12,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5624 states and 11519 transitions. [2022-03-01 15:08:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:12,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:12,554 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] [2022-03-01 15:08:12,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-03-01 15:08:12,554 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1046933905, now seen corresponding path program 75 times [2022-03-01 15:08:12,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:12,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727911038] [2022-03-01 15:08:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:12,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:13,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:13,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727911038] [2022-03-01 15:08:13,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727911038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:13,351 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:13,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:13,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603716179] [2022-03-01 15:08:13,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:13,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:13,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:13,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:13,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:13,351 INFO L87 Difference]: Start difference. First operand 5624 states and 11519 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:17,065 INFO L93 Difference]: Finished difference Result 7452 states and 15287 transitions. [2022-03-01 15:08:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:08:17,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:17,078 INFO L225 Difference]: With dead ends: 7452 [2022-03-01 15:08:17,078 INFO L226 Difference]: Without dead ends: 7452 [2022-03-01 15:08:17,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:08:17,078 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1474 mSDsluCounter, 10001 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 10571 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:17,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 10571 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3972 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:08:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7452 states. [2022-03-01 15:08:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7452 to 5606. [2022-03-01 15:08:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5603 states have (on average 2.0490808495448865) internal successors, (11481), 5605 states have internal predecessors, (11481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 11481 transitions. [2022-03-01 15:08:17,138 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 11481 transitions. Word has length 99 [2022-03-01 15:08:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:17,138 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 11481 transitions. [2022-03-01 15:08:17,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 11481 transitions. [2022-03-01 15:08:17,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:17,142 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:17,142 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] [2022-03-01 15:08:17,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-01 15:08:17,142 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1638182441, now seen corresponding path program 76 times [2022-03-01 15:08:17,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:17,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006092514] [2022-03-01 15:08:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:18,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:18,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006092514] [2022-03-01 15:08:18,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006092514] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:18,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:18,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-01 15:08:18,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154748657] [2022-03-01 15:08:18,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:18,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 15:08:18,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:18,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 15:08:18,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1241, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:08:18,047 INFO L87 Difference]: Start difference. First operand 5606 states and 11481 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:08:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:23,472 INFO L93 Difference]: Finished difference Result 8226 states and 16904 transitions. [2022-03-01 15:08:23,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 15:08:23,472 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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 [2022-03-01 15:08:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:23,483 INFO L225 Difference]: With dead ends: 8226 [2022-03-01 15:08:23,483 INFO L226 Difference]: Without dead ends: 8226 [2022-03-01 15:08:23,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1402, Invalid=7154, Unknown=0, NotChecked=0, Total=8556 [2022-03-01 15:08:23,484 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 2126 mSDsluCounter, 10410 mSDsCounter, 0 mSdLazyCounter, 4545 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 10968 SdHoareTripleChecker+Invalid, 4597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:23,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2126 Valid, 10968 Invalid, 4597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4545 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 15:08:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8226 states. [2022-03-01 15:08:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8226 to 5752. [2022-03-01 15:08:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5752 states, 5749 states have (on average 2.0511393285788833) internal successors, (11792), 5751 states have internal predecessors, (11792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 11792 transitions. [2022-03-01 15:08:23,542 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 11792 transitions. Word has length 99 [2022-03-01 15:08:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:23,542 INFO L470 AbstractCegarLoop]: Abstraction has 5752 states and 11792 transitions. [2022-03-01 15:08:23,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:08:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 11792 transitions. [2022-03-01 15:08:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:23,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:23,546 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] [2022-03-01 15:08:23,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-01 15:08:23,546 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash -536116461, now seen corresponding path program 77 times [2022-03-01 15:08:23,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:23,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67591014] [2022-03-01 15:08:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:23,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:24,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:24,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67591014] [2022-03-01 15:08:24,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67591014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:24,227 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:24,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:24,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964125561] [2022-03-01 15:08:24,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:24,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:24,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:24,228 INFO L87 Difference]: Start difference. First operand 5752 states and 11792 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:27,947 INFO L93 Difference]: Finished difference Result 8591 states and 17638 transitions. [2022-03-01 15:08:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:08:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:27,972 INFO L225 Difference]: With dead ends: 8591 [2022-03-01 15:08:27,972 INFO L226 Difference]: Without dead ends: 8591 [2022-03-01 15:08:27,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:08:27,973 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1628 mSDsluCounter, 10081 mSDsCounter, 0 mSdLazyCounter, 4094 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 10635 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:27,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 10635 Invalid, 4130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 4094 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:08:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8591 states. [2022-03-01 15:08:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8591 to 5383. [2022-03-01 15:08:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5383 states, 5380 states have (on average 2.0479553903345726) internal successors, (11018), 5382 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5383 states to 5383 states and 11018 transitions. [2022-03-01 15:08:28,059 INFO L78 Accepts]: Start accepts. Automaton has 5383 states and 11018 transitions. Word has length 99 [2022-03-01 15:08:28,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:28,059 INFO L470 AbstractCegarLoop]: Abstraction has 5383 states and 11018 transitions. [2022-03-01 15:08:28,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5383 states and 11018 transitions. [2022-03-01 15:08:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:28,063 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:28,063 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] [2022-03-01 15:08:28,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-01 15:08:28,063 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:28,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1568360313, now seen corresponding path program 78 times [2022-03-01 15:08:28,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:28,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463326396] [2022-03-01 15:08:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:28,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:28,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463326396] [2022-03-01 15:08:28,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463326396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:28,948 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:28,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:28,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577432538] [2022-03-01 15:08:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:28,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:28,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:28,949 INFO L87 Difference]: Start difference. First operand 5383 states and 11018 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:33,327 INFO L93 Difference]: Finished difference Result 7505 states and 15415 transitions. [2022-03-01 15:08:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:08:33,328 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:33,335 INFO L225 Difference]: With dead ends: 7505 [2022-03-01 15:08:33,335 INFO L226 Difference]: Without dead ends: 7505 [2022-03-01 15:08:33,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:08:33,336 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1717 mSDsluCounter, 9242 mSDsCounter, 0 mSdLazyCounter, 3590 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 9799 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:33,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1717 Valid, 9799 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:08:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7505 states. [2022-03-01 15:08:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7505 to 5410. [2022-03-01 15:08:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5407 states have (on average 2.048270760125763) internal successors, (11075), 5409 states have internal predecessors, (11075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 11075 transitions. [2022-03-01 15:08:33,386 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 11075 transitions. Word has length 99 [2022-03-01 15:08:33,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:33,386 INFO L470 AbstractCegarLoop]: Abstraction has 5410 states and 11075 transitions. [2022-03-01 15:08:33,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 11075 transitions. [2022-03-01 15:08:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:33,390 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:33,390 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] [2022-03-01 15:08:33,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-01 15:08:33,391 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1661003825, now seen corresponding path program 79 times [2022-03-01 15:08:33,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:33,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091647016] [2022-03-01 15:08:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:34,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:34,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091647016] [2022-03-01 15:08:34,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091647016] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:34,063 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:34,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:08:34,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604192380] [2022-03-01 15:08:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:34,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:08:34,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:08:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:08:34,063 INFO L87 Difference]: Start difference. First operand 5410 states and 11075 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:08:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:37,940 INFO L93 Difference]: Finished difference Result 9587 states and 19709 transitions. [2022-03-01 15:08:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:08:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:08:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:37,950 INFO L225 Difference]: With dead ends: 9587 [2022-03-01 15:08:37,950 INFO L226 Difference]: Without dead ends: 9587 [2022-03-01 15:08:37,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:08:37,951 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1681 mSDsluCounter, 10944 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 11547 SdHoareTripleChecker+Invalid, 4267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:37,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 11547 Invalid, 4267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4226 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:08:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9587 states. [2022-03-01 15:08:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9587 to 5412. [2022-03-01 15:08:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5409 states have (on average 2.048252911813644) internal successors, (11079), 5411 states have internal predecessors, (11079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 11079 transitions. [2022-03-01 15:08:38,012 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 11079 transitions. Word has length 99 [2022-03-01 15:08:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:38,012 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 11079 transitions. [2022-03-01 15:08:38,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:08:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 11079 transitions. [2022-03-01 15:08:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:38,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:38,016 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] [2022-03-01 15:08:38,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-01 15:08:38,016 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash -453834401, now seen corresponding path program 80 times [2022-03-01 15:08:38,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:38,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772571780] [2022-03-01 15:08:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:38,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:38,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772571780] [2022-03-01 15:08:38,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772571780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:38,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:38,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:38,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134886707] [2022-03-01 15:08:38,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:38,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:38,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:38,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:38,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:38,740 INFO L87 Difference]: Start difference. First operand 5412 states and 11079 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:42,862 INFO L93 Difference]: Finished difference Result 7609 states and 15625 transitions. [2022-03-01 15:08:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:08:42,862 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:42,870 INFO L225 Difference]: With dead ends: 7609 [2022-03-01 15:08:42,870 INFO L226 Difference]: Without dead ends: 7609 [2022-03-01 15:08:42,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:08:42,871 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1617 mSDsluCounter, 9605 mSDsCounter, 0 mSdLazyCounter, 3682 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 10176 SdHoareTripleChecker+Invalid, 3717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:42,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 10176 Invalid, 3717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3682 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:08:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7609 states. [2022-03-01 15:08:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7609 to 5394. [2022-03-01 15:08:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5391 states have (on average 2.048043034687442) internal successors, (11041), 5393 states have internal predecessors, (11041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 11041 transitions. [2022-03-01 15:08:42,922 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 11041 transitions. Word has length 99 [2022-03-01 15:08:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:42,922 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 11041 transitions. [2022-03-01 15:08:42,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:42,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 11041 transitions. [2022-03-01 15:08:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:42,926 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:42,926 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] [2022-03-01 15:08:42,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-01 15:08:42,927 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1845909967, now seen corresponding path program 81 times [2022-03-01 15:08:42,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:42,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149245471] [2022-03-01 15:08:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:42,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:43,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:43,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149245471] [2022-03-01 15:08:43,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149245471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:43,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:43,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:43,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396358569] [2022-03-01 15:08:43,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:43,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:43,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:43,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:43,628 INFO L87 Difference]: Start difference. First operand 5394 states and 11041 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:48,560 INFO L93 Difference]: Finished difference Result 9620 states and 19761 transitions. [2022-03-01 15:08:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:08:48,560 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:48,569 INFO L225 Difference]: With dead ends: 9620 [2022-03-01 15:08:48,569 INFO L226 Difference]: Without dead ends: 9620 [2022-03-01 15:08:48,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 15:08:48,570 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1721 mSDsluCounter, 10671 mSDsCounter, 0 mSdLazyCounter, 3900 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 11298 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:48,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 11298 Invalid, 3933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3900 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:08:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9620 states. [2022-03-01 15:08:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9620 to 5395. [2022-03-01 15:08:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5395 states, 5392 states have (on average 2.0480341246290803) internal successors, (11043), 5394 states have internal predecessors, (11043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 11043 transitions. [2022-03-01 15:08:48,626 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 11043 transitions. Word has length 99 [2022-03-01 15:08:48,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:48,627 INFO L470 AbstractCegarLoop]: Abstraction has 5395 states and 11043 transitions. [2022-03-01 15:08:48,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:48,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 11043 transitions. [2022-03-01 15:08:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:48,631 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:48,631 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] [2022-03-01 15:08:48,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-01 15:08:48,631 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1824716895, now seen corresponding path program 82 times [2022-03-01 15:08:48,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:48,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654570570] [2022-03-01 15:08:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:49,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:49,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654570570] [2022-03-01 15:08:49,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654570570] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:49,199 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:49,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:08:49,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248643796] [2022-03-01 15:08:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:49,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:08:49,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:08:49,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:08:49,200 INFO L87 Difference]: Start difference. First operand 5395 states and 11043 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:08:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:52,890 INFO L93 Difference]: Finished difference Result 8626 states and 17704 transitions. [2022-03-01 15:08:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:08:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:08:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:52,925 INFO L225 Difference]: With dead ends: 8626 [2022-03-01 15:08:52,925 INFO L226 Difference]: Without dead ends: 8626 [2022-03-01 15:08:52,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:08:52,925 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1754 mSDsluCounter, 11008 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 11603 SdHoareTripleChecker+Invalid, 4216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:52,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1754 Valid, 11603 Invalid, 4216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:08:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2022-03-01 15:08:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 5397. [2022-03-01 15:08:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 5394 states have (on average 2.0480163144234336) internal successors, (11047), 5396 states have internal predecessors, (11047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 11047 transitions. [2022-03-01 15:08:52,980 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 11047 transitions. Word has length 99 [2022-03-01 15:08:52,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:52,980 INFO L470 AbstractCegarLoop]: Abstraction has 5397 states and 11047 transitions. [2022-03-01 15:08:52,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:08:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 11047 transitions. [2022-03-01 15:08:52,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:52,984 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:52,984 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] [2022-03-01 15:08:52,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-01 15:08:52,984 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash -9260577, now seen corresponding path program 83 times [2022-03-01 15:08:52,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:52,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465382302] [2022-03-01 15:08:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:53,467 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:53,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465382302] [2022-03-01 15:08:53,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465382302] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:53,467 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:53,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:53,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489110351] [2022-03-01 15:08:53,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:53,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:53,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:53,468 INFO L87 Difference]: Start difference. First operand 5397 states and 11047 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:08:56,922 INFO L93 Difference]: Finished difference Result 7581 states and 15550 transitions. [2022-03-01 15:08:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 15:08:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:08:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:08:56,932 INFO L225 Difference]: With dead ends: 7581 [2022-03-01 15:08:56,932 INFO L226 Difference]: Without dead ends: 7581 [2022-03-01 15:08:56,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=914, Invalid=4488, Unknown=0, NotChecked=0, Total=5402 [2022-03-01 15:08:56,933 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1689 mSDsluCounter, 9067 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 9623 SdHoareTripleChecker+Invalid, 3498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:08:56,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1689 Valid, 9623 Invalid, 3498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:08:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2022-03-01 15:08:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 5394. [2022-03-01 15:08:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5391 states have (on average 2.048043034687442) internal successors, (11041), 5393 states have internal predecessors, (11041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:08:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 11041 transitions. [2022-03-01 15:08:56,992 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 11041 transitions. Word has length 99 [2022-03-01 15:08:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:08:56,993 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 11041 transitions. [2022-03-01 15:08:56,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:08:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 11041 transitions. [2022-03-01 15:08:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:08:56,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:08:56,997 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] [2022-03-01 15:08:56,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-01 15:08:56,997 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:08:56,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:08:56,997 INFO L85 PathProgramCache]: Analyzing trace with hash -41375983, now seen corresponding path program 84 times [2022-03-01 15:08:56,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:08:56,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548782687] [2022-03-01 15:08:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:08:56,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:08:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:08:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:08:57,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:08:57,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548782687] [2022-03-01 15:08:57,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548782687] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:08:57,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:08:57,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:08:57,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025024423] [2022-03-01 15:08:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:08:57,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:08:57,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:08:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:08:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:08:57,829 INFO L87 Difference]: Start difference. First operand 5394 states and 11041 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:01,361 INFO L93 Difference]: Finished difference Result 7848 states and 16137 transitions. [2022-03-01 15:09:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:01,361 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:01,372 INFO L225 Difference]: With dead ends: 7848 [2022-03-01 15:09:01,372 INFO L226 Difference]: Without dead ends: 7848 [2022-03-01 15:09:01,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:09:01,373 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1648 mSDsluCounter, 9148 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 9710 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:01,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 9710 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:09:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7848 states. [2022-03-01 15:09:01,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7848 to 5412. [2022-03-01 15:09:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5409 states have (on average 2.048252911813644) internal successors, (11079), 5411 states have internal predecessors, (11079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 11079 transitions. [2022-03-01 15:09:01,448 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 11079 transitions. Word has length 99 [2022-03-01 15:09:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:01,449 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 11079 transitions. [2022-03-01 15:09:01,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 11079 transitions. [2022-03-01 15:09:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:01,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:01,453 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] [2022-03-01 15:09:01,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-01 15:09:01,454 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:01,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash -134019495, now seen corresponding path program 85 times [2022-03-01 15:09:01,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:01,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68293761] [2022-03-01 15:09:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:02,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:02,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68293761] [2022-03-01 15:09:02,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68293761] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:02,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:02,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:02,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182807030] [2022-03-01 15:09:02,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:02,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:02,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:02,090 INFO L87 Difference]: Start difference. First operand 5412 states and 11079 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:06,452 INFO L93 Difference]: Finished difference Result 9818 states and 20188 transitions. [2022-03-01 15:09:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:09:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:06,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:06,463 INFO L225 Difference]: With dead ends: 9818 [2022-03-01 15:09:06,463 INFO L226 Difference]: Without dead ends: 9818 [2022-03-01 15:09:06,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:09:06,465 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1628 mSDsluCounter, 10984 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 11592 SdHoareTripleChecker+Invalid, 4293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:06,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 11592 Invalid, 4293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:09:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2022-03-01 15:09:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 5414. [2022-03-01 15:09:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5411 states have (on average 2.04823507669562) internal successors, (11083), 5413 states have internal predecessors, (11083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 11083 transitions. [2022-03-01 15:09:06,530 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 11083 transitions. Word has length 99 [2022-03-01 15:09:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:06,531 INFO L470 AbstractCegarLoop]: Abstraction has 5414 states and 11083 transitions. [2022-03-01 15:09:06,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 11083 transitions. [2022-03-01 15:09:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:06,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:06,534 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] [2022-03-01 15:09:06,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-01 15:09:06,535 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:06,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1073149929, now seen corresponding path program 86 times [2022-03-01 15:09:06,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:06,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704373880] [2022-03-01 15:09:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:06,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:07,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:07,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704373880] [2022-03-01 15:09:07,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704373880] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:07,139 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:07,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:09:07,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488331088] [2022-03-01 15:09:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:07,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:09:07,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:09:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:09:07,139 INFO L87 Difference]: Start difference. First operand 5414 states and 11083 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:09:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:12,018 INFO L93 Difference]: Finished difference Result 7911 states and 16246 transitions. [2022-03-01 15:09:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:09:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:12,026 INFO L225 Difference]: With dead ends: 7911 [2022-03-01 15:09:12,026 INFO L226 Difference]: Without dead ends: 7911 [2022-03-01 15:09:12,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:09:12,027 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1539 mSDsluCounter, 10478 mSDsCounter, 0 mSdLazyCounter, 4095 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 11054 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:12,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 11054 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4095 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 15:09:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7911 states. [2022-03-01 15:09:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 5396. [2022-03-01 15:09:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5393 states have (on average 2.0480252178750233) internal successors, (11045), 5395 states have internal predecessors, (11045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 11045 transitions. [2022-03-01 15:09:12,081 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 11045 transitions. Word has length 99 [2022-03-01 15:09:12,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:12,081 INFO L470 AbstractCegarLoop]: Abstraction has 5396 states and 11045 transitions. [2022-03-01 15:09:12,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:09:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 11045 transitions. [2022-03-01 15:09:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:12,085 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:12,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:09:12,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-03-01 15:09:12,085 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1611966417, now seen corresponding path program 87 times [2022-03-01 15:09:12,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:12,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395020744] [2022-03-01 15:09:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:12,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:12,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395020744] [2022-03-01 15:09:12,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395020744] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:12,901 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:12,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:12,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015753485] [2022-03-01 15:09:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:12,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:12,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:12,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:12,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:12,902 INFO L87 Difference]: Start difference. First operand 5396 states and 11045 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:16,574 INFO L93 Difference]: Finished difference Result 7592 states and 15589 transitions. [2022-03-01 15:09:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:16,584 INFO L225 Difference]: With dead ends: 7592 [2022-03-01 15:09:16,585 INFO L226 Difference]: Without dead ends: 7592 [2022-03-01 15:09:16,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:09:16,585 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1501 mSDsluCounter, 10226 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 10786 SdHoareTripleChecker+Invalid, 4101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:16,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1501 Valid, 10786 Invalid, 4101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:09:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2022-03-01 15:09:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 5394. [2022-03-01 15:09:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5391 states have (on average 2.048043034687442) internal successors, (11041), 5393 states have internal predecessors, (11041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 11041 transitions. [2022-03-01 15:09:16,644 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 11041 transitions. Word has length 99 [2022-03-01 15:09:16,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:16,644 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 11041 transitions. [2022-03-01 15:09:16,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 11041 transitions. [2022-03-01 15:09:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:16,648 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:16,648 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] [2022-03-01 15:09:16,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-03-01 15:09:16,649 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -795570981, now seen corresponding path program 88 times [2022-03-01 15:09:16,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:16,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953220603] [2022-03-01 15:09:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:16,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:17,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:17,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953220603] [2022-03-01 15:09:17,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953220603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:17,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:17,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:09:17,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13839942] [2022-03-01 15:09:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:17,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:09:17,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:09:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:09:17,259 INFO L87 Difference]: Start difference. First operand 5394 states and 11041 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:09:20,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:20,730 INFO L93 Difference]: Finished difference Result 7657 states and 15736 transitions. [2022-03-01 15:09:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:20,731 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:09:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:20,739 INFO L225 Difference]: With dead ends: 7657 [2022-03-01 15:09:20,739 INFO L226 Difference]: Without dead ends: 7657 [2022-03-01 15:09:20,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:09:20,740 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1751 mSDsluCounter, 10059 mSDsCounter, 0 mSdLazyCounter, 4050 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 10615 SdHoareTripleChecker+Invalid, 4093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:20,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 10615 Invalid, 4093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4050 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:09:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2022-03-01 15:09:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 5416. [2022-03-01 15:09:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5416 states, 5413 states have (on average 2.0482172547570663) internal successors, (11087), 5415 states have internal predecessors, (11087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 11087 transitions. [2022-03-01 15:09:20,797 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 11087 transitions. Word has length 99 [2022-03-01 15:09:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:20,797 INFO L470 AbstractCegarLoop]: Abstraction has 5416 states and 11087 transitions. [2022-03-01 15:09:20,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:09:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 11087 transitions. [2022-03-01 15:09:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:20,801 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:20,801 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] [2022-03-01 15:09:20,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-01 15:09:20,801 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash -888214493, now seen corresponding path program 89 times [2022-03-01 15:09:20,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:20,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036313830] [2022-03-01 15:09:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:21,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:21,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036313830] [2022-03-01 15:09:21,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036313830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:21,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:21,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:21,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727253248] [2022-03-01 15:09:21,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:21,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:21,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:21,615 INFO L87 Difference]: Start difference. First operand 5416 states and 11087 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:25,332 INFO L93 Difference]: Finished difference Result 9627 states and 19787 transitions. [2022-03-01 15:09:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:09:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:25,342 INFO L225 Difference]: With dead ends: 9627 [2022-03-01 15:09:25,343 INFO L226 Difference]: Without dead ends: 9627 [2022-03-01 15:09:25,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:09:25,343 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1708 mSDsluCounter, 10130 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 10732 SdHoareTripleChecker+Invalid, 3988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:25,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1708 Valid, 10732 Invalid, 3988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:09:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9627 states. [2022-03-01 15:09:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9627 to 5418. [2022-03-01 15:09:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5415 states have (on average 2.0481994459833794) internal successors, (11091), 5417 states have internal predecessors, (11091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 11091 transitions. [2022-03-01 15:09:25,407 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 11091 transitions. Word has length 99 [2022-03-01 15:09:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:25,407 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 11091 transitions. [2022-03-01 15:09:25,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 11091 transitions. [2022-03-01 15:09:25,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:25,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:25,411 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] [2022-03-01 15:09:25,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-03-01 15:09:25,411 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash 318954931, now seen corresponding path program 90 times [2022-03-01 15:09:25,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:25,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921488933] [2022-03-01 15:09:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:25,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:25,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921488933] [2022-03-01 15:09:25,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921488933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:25,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:25,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:25,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358958834] [2022-03-01 15:09:25,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:25,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:25,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:25,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:25,916 INFO L87 Difference]: Start difference. First operand 5418 states and 11091 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:29,692 INFO L93 Difference]: Finished difference Result 7720 states and 15845 transitions. [2022-03-01 15:09:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:29,693 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:29,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:29,700 INFO L225 Difference]: With dead ends: 7720 [2022-03-01 15:09:29,700 INFO L226 Difference]: Without dead ends: 7720 [2022-03-01 15:09:29,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:09:29,701 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1495 mSDsluCounter, 10692 mSDsCounter, 0 mSdLazyCounter, 4278 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 11262 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:29,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 11262 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4278 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:09:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7720 states. [2022-03-01 15:09:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7720 to 5400. [2022-03-01 15:09:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5397 states have (on average 2.04798962386511) internal successors, (11053), 5399 states have internal predecessors, (11053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 11053 transitions. [2022-03-01 15:09:29,750 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 11053 transitions. Word has length 99 [2022-03-01 15:09:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:29,750 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 11053 transitions. [2022-03-01 15:09:29,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 11053 transitions. [2022-03-01 15:09:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:29,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:29,754 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] [2022-03-01 15:09:29,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-03-01 15:09:29,754 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:29,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1928805881, now seen corresponding path program 91 times [2022-03-01 15:09:29,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:29,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602932598] [2022-03-01 15:09:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:30,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:30,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602932598] [2022-03-01 15:09:30,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602932598] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:30,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:30,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:30,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766469313] [2022-03-01 15:09:30,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:30,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:30,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:30,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:30,426 INFO L87 Difference]: Start difference. First operand 5400 states and 11053 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:33,871 INFO L93 Difference]: Finished difference Result 7742 states and 15906 transitions. [2022-03-01 15:09:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:33,871 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:33,879 INFO L225 Difference]: With dead ends: 7742 [2022-03-01 15:09:33,879 INFO L226 Difference]: Without dead ends: 7742 [2022-03-01 15:09:33,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:09:33,879 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1576 mSDsluCounter, 9766 mSDsCounter, 0 mSdLazyCounter, 3942 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 10326 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:33,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 10326 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3942 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:09:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2022-03-01 15:09:33,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 5398. [2022-03-01 15:09:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5395 states have (on average 2.0480074142724747) internal successors, (11049), 5397 states have internal predecessors, (11049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 11049 transitions. [2022-03-01 15:09:33,927 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 11049 transitions. Word has length 99 [2022-03-01 15:09:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:33,927 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 11049 transitions. [2022-03-01 15:09:33,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 11049 transitions. [2022-03-01 15:09:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:33,930 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:33,930 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] [2022-03-01 15:09:33,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-01 15:09:33,931 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -253644005, now seen corresponding path program 92 times [2022-03-01 15:09:33,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:33,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664945391] [2022-03-01 15:09:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:33,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:34,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:34,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664945391] [2022-03-01 15:09:34,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664945391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:34,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:34,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-01 15:09:34,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020875108] [2022-03-01 15:09:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:34,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 15:09:34,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 15:09:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1241, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:09:34,764 INFO L87 Difference]: Start difference. First operand 5398 states and 11049 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:09:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:40,847 INFO L93 Difference]: Finished difference Result 8435 states and 17344 transitions. [2022-03-01 15:09:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 15:09:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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 [2022-03-01 15:09:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:40,858 INFO L225 Difference]: With dead ends: 8435 [2022-03-01 15:09:40,859 INFO L226 Difference]: Without dead ends: 8435 [2022-03-01 15:09:40,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1402, Invalid=7154, Unknown=0, NotChecked=0, Total=8556 [2022-03-01 15:09:40,861 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1873 mSDsluCounter, 11552 mSDsCounter, 0 mSdLazyCounter, 5329 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 12109 SdHoareTripleChecker+Invalid, 5377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:40,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 12109 Invalid, 5377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5329 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-01 15:09:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8435 states. [2022-03-01 15:09:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8435 to 5697. [2022-03-01 15:09:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5697 states, 5694 states have (on average 2.0518089216719355) internal successors, (11683), 5696 states have internal predecessors, (11683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5697 states to 5697 states and 11683 transitions. [2022-03-01 15:09:40,936 INFO L78 Accepts]: Start accepts. Automaton has 5697 states and 11683 transitions. Word has length 99 [2022-03-01 15:09:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:40,936 INFO L470 AbstractCegarLoop]: Abstraction has 5697 states and 11683 transitions. [2022-03-01 15:09:40,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:09:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5697 states and 11683 transitions. [2022-03-01 15:09:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:40,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:40,942 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] [2022-03-01 15:09:40,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-01 15:09:40,943 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash 848421975, now seen corresponding path program 93 times [2022-03-01 15:09:40,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:40,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522570766] [2022-03-01 15:09:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:41,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:41,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522570766] [2022-03-01 15:09:41,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522570766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:41,804 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:41,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:41,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823238331] [2022-03-01 15:09:41,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:41,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:41,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:41,805 INFO L87 Difference]: Start difference. First operand 5697 states and 11683 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:45,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:45,456 INFO L93 Difference]: Finished difference Result 8874 states and 18228 transitions. [2022-03-01 15:09:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:45,467 INFO L225 Difference]: With dead ends: 8874 [2022-03-01 15:09:45,467 INFO L226 Difference]: Without dead ends: 8874 [2022-03-01 15:09:45,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:09:45,468 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1687 mSDsluCounter, 9056 mSDsCounter, 0 mSdLazyCounter, 3624 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 9609 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:45,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 9609 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3624 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:09:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8874 states. [2022-03-01 15:09:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8874 to 5394. [2022-03-01 15:09:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5391 states have (on average 2.048043034687442) internal successors, (11041), 5393 states have internal predecessors, (11041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 11041 transitions. [2022-03-01 15:09:45,537 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 11041 transitions. Word has length 99 [2022-03-01 15:09:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:45,537 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 11041 transitions. [2022-03-01 15:09:45,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 11041 transitions. [2022-03-01 15:09:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:45,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:45,541 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] [2022-03-01 15:09:45,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-01 15:09:45,541 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1362747807, now seen corresponding path program 94 times [2022-03-01 15:09:45,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:45,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723986944] [2022-03-01 15:09:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:45,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:46,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:46,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723986944] [2022-03-01 15:09:46,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723986944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:46,369 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:46,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:46,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775309666] [2022-03-01 15:09:46,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:46,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:46,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:46,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:46,370 INFO L87 Difference]: Start difference. First operand 5394 states and 11041 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:50,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:50,544 INFO L93 Difference]: Finished difference Result 7785 states and 15995 transitions. [2022-03-01 15:09:50,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:50,544 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:50,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:50,553 INFO L225 Difference]: With dead ends: 7785 [2022-03-01 15:09:50,553 INFO L226 Difference]: Without dead ends: 7785 [2022-03-01 15:09:50,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:09:50,554 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1629 mSDsluCounter, 9496 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 10058 SdHoareTripleChecker+Invalid, 3735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:50,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 10058 Invalid, 3735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:09:50,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2022-03-01 15:09:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 5424. [2022-03-01 15:09:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5421 states have (on average 2.048330566316178) internal successors, (11104), 5423 states have internal predecessors, (11104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 11104 transitions. [2022-03-01 15:09:50,612 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 11104 transitions. Word has length 99 [2022-03-01 15:09:50,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:50,613 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 11104 transitions. [2022-03-01 15:09:50,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 11104 transitions. [2022-03-01 15:09:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:50,617 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:50,617 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, 1] [2022-03-01 15:09:50,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-03-01 15:09:50,617 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:50,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1270104295, now seen corresponding path program 95 times [2022-03-01 15:09:50,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:50,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019455590] [2022-03-01 15:09:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:50,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:51,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:51,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019455590] [2022-03-01 15:09:51,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019455590] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:51,181 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:51,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:09:51,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308566081] [2022-03-01 15:09:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:51,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:09:51,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:51,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:09:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:09:51,182 INFO L87 Difference]: Start difference. First operand 5424 states and 11104 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:09:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:55,451 INFO L93 Difference]: Finished difference Result 9867 states and 20289 transitions. [2022-03-01 15:09:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:09:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:09:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:55,461 INFO L225 Difference]: With dead ends: 9867 [2022-03-01 15:09:55,461 INFO L226 Difference]: Without dead ends: 9867 [2022-03-01 15:09:55,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:09:55,462 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1631 mSDsluCounter, 10995 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 11603 SdHoareTripleChecker+Invalid, 4161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:55,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 11603 Invalid, 4161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:09:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2022-03-01 15:09:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 5426. [2022-03-01 15:09:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5426 states, 5423 states have (on average 2.0483127420247094) internal successors, (11108), 5425 states have internal predecessors, (11108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:09:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5426 states to 5426 states and 11108 transitions. [2022-03-01 15:09:55,520 INFO L78 Accepts]: Start accepts. Automaton has 5426 states and 11108 transitions. Word has length 99 [2022-03-01 15:09:55,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:09:55,520 INFO L470 AbstractCegarLoop]: Abstraction has 5426 states and 11108 transitions. [2022-03-01 15:09:55,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:09:55,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5426 states and 11108 transitions. [2022-03-01 15:09:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:09:55,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:09:55,524 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] [2022-03-01 15:09:55,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-01 15:09:55,524 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:09:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:09:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1817693577, now seen corresponding path program 96 times [2022-03-01 15:09:55,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:09:55,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042640057] [2022-03-01 15:09:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:09:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:09:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:09:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:09:56,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:09:56,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042640057] [2022-03-01 15:09:56,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042640057] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:09:56,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:09:56,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:09:56,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762138863] [2022-03-01 15:09:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:09:56,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:09:56,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:09:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:09:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:09:56,282 INFO L87 Difference]: Start difference. First operand 5426 states and 11108 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:09:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:09:59,938 INFO L93 Difference]: Finished difference Result 7889 states and 16205 transitions. [2022-03-01 15:09:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:09:59,939 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:09:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:09:59,949 INFO L225 Difference]: With dead ends: 7889 [2022-03-01 15:09:59,950 INFO L226 Difference]: Without dead ends: 7889 [2022-03-01 15:09:59,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:09:59,951 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1517 mSDsluCounter, 9302 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 9878 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:09:59,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 9878 Invalid, 3537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:09:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7889 states. [2022-03-01 15:10:00,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7889 to 5408. [2022-03-01 15:10:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5405 states have (on average 2.048103607770583) internal successors, (11070), 5407 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 11070 transitions. [2022-03-01 15:10:00,022 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 11070 transitions. Word has length 99 [2022-03-01 15:10:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:00,022 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 11070 transitions. [2022-03-01 15:10:00,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 11070 transitions. [2022-03-01 15:10:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:00,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:00,027 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] [2022-03-01 15:10:00,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-01 15:10:00,027 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash 482050791, now seen corresponding path program 97 times [2022-03-01 15:10:00,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:00,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889263526] [2022-03-01 15:10:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:00,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:00,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:00,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889263526] [2022-03-01 15:10:00,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889263526] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:00,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:00,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-01 15:10:00,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813625263] [2022-03-01 15:10:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:00,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:10:00,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:10:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:10:00,488 INFO L87 Difference]: Start difference. First operand 5408 states and 11070 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:10:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:04,156 INFO L93 Difference]: Finished difference Result 9900 states and 20341 transitions. [2022-03-01 15:10:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-01 15:10:04,156 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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 [2022-03-01 15:10:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:04,168 INFO L225 Difference]: With dead ends: 9900 [2022-03-01 15:10:04,168 INFO L226 Difference]: Without dead ends: 9900 [2022-03-01 15:10:04,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1129, Invalid=5033, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:10:04,168 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1682 mSDsluCounter, 10822 mSDsCounter, 0 mSdLazyCounter, 3892 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 11439 SdHoareTripleChecker+Invalid, 3926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:04,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 11439 Invalid, 3926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3892 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:10:04,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9900 states. [2022-03-01 15:10:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9900 to 5409. [2022-03-01 15:10:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 5406 states have (on average 2.048094709581946) internal successors, (11072), 5408 states have internal predecessors, (11072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 11072 transitions. [2022-03-01 15:10:04,238 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 11072 transitions. Word has length 99 [2022-03-01 15:10:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:04,238 INFO L470 AbstractCegarLoop]: Abstraction has 5409 states and 11072 transitions. [2022-03-01 15:10:04,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:10:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 11072 transitions. [2022-03-01 15:10:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:04,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:04,242 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] [2022-03-01 15:10:04,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-01 15:10:04,242 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:04,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:04,243 INFO L85 PathProgramCache]: Analyzing trace with hash 460857719, now seen corresponding path program 98 times [2022-03-01 15:10:04,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:04,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709998482] [2022-03-01 15:10:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:04,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:04,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709998482] [2022-03-01 15:10:04,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709998482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:04,779 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:04,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:10:04,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459207140] [2022-03-01 15:10:04,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:04,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:10:04,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:10:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:10:04,780 INFO L87 Difference]: Start difference. First operand 5409 states and 11072 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:09,338 INFO L93 Difference]: Finished difference Result 8906 states and 18284 transitions. [2022-03-01 15:10:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:10:09,338 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:10:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:09,348 INFO L225 Difference]: With dead ends: 8906 [2022-03-01 15:10:09,348 INFO L226 Difference]: Without dead ends: 8906 [2022-03-01 15:10:09,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1044, Invalid=4962, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:10:09,349 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1891 mSDsluCounter, 9821 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 10421 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:09,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1891 Valid, 10421 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:10:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2022-03-01 15:10:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 5411. [2022-03-01 15:10:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5408 states have (on average 2.048076923076923) internal successors, (11076), 5410 states have internal predecessors, (11076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 11076 transitions. [2022-03-01 15:10:09,405 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 11076 transitions. Word has length 99 [2022-03-01 15:10:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:09,405 INFO L470 AbstractCegarLoop]: Abstraction has 5411 states and 11076 transitions. [2022-03-01 15:10:09,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 11076 transitions. [2022-03-01 15:10:09,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:09,409 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:09,409 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] [2022-03-01 15:10:09,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-01 15:10:09,409 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1373119753, now seen corresponding path program 99 times [2022-03-01 15:10:09,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:09,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900349886] [2022-03-01 15:10:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:10,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:10,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900349886] [2022-03-01 15:10:10,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900349886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:10,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:10,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:10:10,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064471252] [2022-03-01 15:10:10,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:10,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:10:10,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:10:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:10:10,158 INFO L87 Difference]: Start difference. First operand 5411 states and 11076 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:13,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:13,697 INFO L93 Difference]: Finished difference Result 7861 states and 16130 transitions. [2022-03-01 15:10:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:13,697 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:10:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:13,706 INFO L225 Difference]: With dead ends: 7861 [2022-03-01 15:10:13,706 INFO L226 Difference]: Without dead ends: 7861 [2022-03-01 15:10:13,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:10:13,706 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1648 mSDsluCounter, 9807 mSDsCounter, 0 mSdLazyCounter, 3812 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 10383 SdHoareTripleChecker+Invalid, 3855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:13,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 10383 Invalid, 3855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3812 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:10:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2022-03-01 15:10:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 5400. [2022-03-01 15:10:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5397 states have (on average 2.04798962386511) internal successors, (11053), 5399 states have internal predecessors, (11053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 11053 transitions. [2022-03-01 15:10:13,767 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 11053 transitions. Word has length 99 [2022-03-01 15:10:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:13,767 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 11053 transitions. [2022-03-01 15:10:13,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 11053 transitions. [2022-03-01 15:10:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:13,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:13,772 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] [2022-03-01 15:10:13,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-03-01 15:10:13,772 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1405235159, now seen corresponding path program 100 times [2022-03-01 15:10:13,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:13,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263597338] [2022-03-01 15:10:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:14,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:14,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263597338] [2022-03-01 15:10:14,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263597338] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:14,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:14,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:10:14,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102254417] [2022-03-01 15:10:14,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:14,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:10:14,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:14,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:10:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:10:14,553 INFO L87 Difference]: Start difference. First operand 5400 states and 11053 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:19,200 INFO L93 Difference]: Finished difference Result 8128 states and 16717 transitions. [2022-03-01 15:10:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:19,200 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:10:19,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:19,208 INFO L225 Difference]: With dead ends: 8128 [2022-03-01 15:10:19,209 INFO L226 Difference]: Without dead ends: 8128 [2022-03-01 15:10:19,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:10:19,209 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1691 mSDsluCounter, 10201 mSDsCounter, 0 mSdLazyCounter, 4145 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 10768 SdHoareTripleChecker+Invalid, 4182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:19,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 10768 Invalid, 4182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4145 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:10:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states. [2022-03-01 15:10:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8128 to 5418. [2022-03-01 15:10:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5415 states have (on average 2.0481994459833794) internal successors, (11091), 5417 states have internal predecessors, (11091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 11091 transitions. [2022-03-01 15:10:19,269 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 11091 transitions. Word has length 99 [2022-03-01 15:10:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:19,269 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 11091 transitions. [2022-03-01 15:10:19,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 11091 transitions. [2022-03-01 15:10:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:19,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:19,273 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] [2022-03-01 15:10:19,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-01 15:10:19,274 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:19,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1497878671, now seen corresponding path program 101 times [2022-03-01 15:10:19,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:19,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648556100] [2022-03-01 15:10:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:19,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:20,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:20,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648556100] [2022-03-01 15:10:20,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648556100] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:20,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:20,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-03-01 15:10:20,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800623784] [2022-03-01 15:10:20,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:20,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 15:10:20,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:20,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 15:10:20,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:10:20,128 INFO L87 Difference]: Start difference. First operand 5418 states and 11091 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 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) [2022-03-01 15:10:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:25,583 INFO L93 Difference]: Finished difference Result 10243 states and 21063 transitions. [2022-03-01 15:10:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:10:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 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 [2022-03-01 15:10:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:25,597 INFO L225 Difference]: With dead ends: 10243 [2022-03-01 15:10:25,597 INFO L226 Difference]: Without dead ends: 10243 [2022-03-01 15:10:25,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1415, Invalid=6417, Unknown=0, NotChecked=0, Total=7832 [2022-03-01 15:10:25,598 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 1845 mSDsluCounter, 12529 mSDsCounter, 0 mSdLazyCounter, 4947 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 13191 SdHoareTripleChecker+Invalid, 4993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:25,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 13191 Invalid, 4993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4947 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 15:10:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10243 states. [2022-03-01 15:10:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10243 to 5420. [2022-03-01 15:10:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 5417 states have (on average 2.048181650359978) internal successors, (11095), 5419 states have internal predecessors, (11095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 11095 transitions. [2022-03-01 15:10:25,674 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 11095 transitions. Word has length 99 [2022-03-01 15:10:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:25,674 INFO L470 AbstractCegarLoop]: Abstraction has 5420 states and 11095 transitions. [2022-03-01 15:10:25,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 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) [2022-03-01 15:10:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 11095 transitions. [2022-03-01 15:10:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:25,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:25,678 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] [2022-03-01 15:10:25,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-01 15:10:25,679 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:25,679 INFO L85 PathProgramCache]: Analyzing trace with hash -290709247, now seen corresponding path program 102 times [2022-03-01 15:10:25,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:25,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110787009] [2022-03-01 15:10:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:25,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:26,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:26,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110787009] [2022-03-01 15:10:26,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110787009] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:26,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:26,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:10:26,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660473553] [2022-03-01 15:10:26,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:26,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:10:26,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:10:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:10:26,316 INFO L87 Difference]: Start difference. First operand 5420 states and 11095 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:29,720 INFO L93 Difference]: Finished difference Result 8191 states and 16826 transitions. [2022-03-01 15:10:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:29,721 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:10:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:29,732 INFO L225 Difference]: With dead ends: 8191 [2022-03-01 15:10:29,732 INFO L226 Difference]: Without dead ends: 8191 [2022-03-01 15:10:29,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:10:29,732 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 1591 mSDsluCounter, 9942 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 10523 SdHoareTripleChecker+Invalid, 3945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:29,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 10523 Invalid, 3945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:10:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8191 states. [2022-03-01 15:10:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8191 to 5402. [2022-03-01 15:10:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5399 states have (on average 2.047971846638266) internal successors, (11057), 5401 states have internal predecessors, (11057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 11057 transitions. [2022-03-01 15:10:29,788 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 11057 transitions. Word has length 99 [2022-03-01 15:10:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:29,789 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 11057 transitions. [2022-03-01 15:10:29,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 11057 transitions. [2022-03-01 15:10:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:29,793 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:29,793 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] [2022-03-01 15:10:29,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-01 15:10:29,793 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:29,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1319141703, now seen corresponding path program 103 times [2022-03-01 15:10:29,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:29,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000202490] [2022-03-01 15:10:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:29,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:30,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:30,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000202490] [2022-03-01 15:10:30,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000202490] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:30,323 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:30,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:10:30,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649862487] [2022-03-01 15:10:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:30,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:10:30,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:10:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:10:30,324 INFO L87 Difference]: Start difference. First operand 5402 states and 11057 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:34,089 INFO L93 Difference]: Finished difference Result 7872 states and 16169 transitions. [2022-03-01 15:10:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:34,090 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:10:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:34,098 INFO L225 Difference]: With dead ends: 7872 [2022-03-01 15:10:34,098 INFO L226 Difference]: Without dead ends: 7872 [2022-03-01 15:10:34,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:10:34,099 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1506 mSDsluCounter, 10290 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 10855 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:34,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 10855 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:10:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7872 states. [2022-03-01 15:10:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7872 to 5399. [2022-03-01 15:10:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 5396 states have (on average 2.0479985174203112) internal successors, (11051), 5398 states have internal predecessors, (11051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 11051 transitions. [2022-03-01 15:10:34,160 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 11051 transitions. Word has length 99 [2022-03-01 15:10:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:34,160 INFO L470 AbstractCegarLoop]: Abstraction has 5399 states and 11051 transitions. [2022-03-01 15:10:34,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 11051 transitions. [2022-03-01 15:10:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:34,164 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:34,164 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] [2022-03-01 15:10:34,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-03-01 15:10:34,164 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2135537139, now seen corresponding path program 104 times [2022-03-01 15:10:34,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:34,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814283274] [2022-03-01 15:10:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:34,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:34,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:34,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814283274] [2022-03-01 15:10:34,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814283274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:34,976 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:34,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:10:34,976 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870230815] [2022-03-01 15:10:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:34,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:10:34,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:10:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:10:34,977 INFO L87 Difference]: Start difference. First operand 5399 states and 11051 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:38,972 INFO L93 Difference]: Finished difference Result 8185 states and 16831 transitions. [2022-03-01 15:10:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:38,972 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:10:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:38,981 INFO L225 Difference]: With dead ends: 8185 [2022-03-01 15:10:38,981 INFO L226 Difference]: Without dead ends: 8185 [2022-03-01 15:10:38,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:10:38,981 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1773 mSDsluCounter, 9849 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 10416 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:38,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 10416 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:10:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8185 states. [2022-03-01 15:10:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8185 to 5421. [2022-03-01 15:10:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5421 states, 5418 states have (on average 2.048172757475083) internal successors, (11097), 5420 states have internal predecessors, (11097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 11097 transitions. [2022-03-01 15:10:39,031 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 11097 transitions. Word has length 99 [2022-03-01 15:10:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:39,032 INFO L470 AbstractCegarLoop]: Abstraction has 5421 states and 11097 transitions. [2022-03-01 15:10:39,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 11097 transitions. [2022-03-01 15:10:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:39,035 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:39,035 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] [2022-03-01 15:10:39,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-01 15:10:39,035 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2042893627, now seen corresponding path program 105 times [2022-03-01 15:10:39,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:39,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303985044] [2022-03-01 15:10:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:39,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:39,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303985044] [2022-03-01 15:10:39,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303985044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:39,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:39,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:10:39,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089568791] [2022-03-01 15:10:39,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:39,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:10:39,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:10:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:10:39,767 INFO L87 Difference]: Start difference. First operand 5421 states and 11097 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:44,607 INFO L93 Difference]: Finished difference Result 10155 states and 20882 transitions. [2022-03-01 15:10:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:10:44,607 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:10:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:44,619 INFO L225 Difference]: With dead ends: 10155 [2022-03-01 15:10:44,619 INFO L226 Difference]: Without dead ends: 10155 [2022-03-01 15:10:44,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:10:44,619 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1719 mSDsluCounter, 10985 mSDsCounter, 0 mSdLazyCounter, 4396 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 11598 SdHoareTripleChecker+Invalid, 4429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:44,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 11598 Invalid, 4429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4396 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 15:10:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10155 states. [2022-03-01 15:10:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10155 to 5423. [2022-03-01 15:10:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5423 states, 5420 states have (on average 2.0481549815498155) internal successors, (11101), 5422 states have internal predecessors, (11101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 11101 transitions. [2022-03-01 15:10:44,678 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 11101 transitions. Word has length 99 [2022-03-01 15:10:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:44,679 INFO L470 AbstractCegarLoop]: Abstraction has 5423 states and 11101 transitions. [2022-03-01 15:10:44,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 11101 transitions. [2022-03-01 15:10:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:44,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:44,683 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] [2022-03-01 15:10:44,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-01 15:10:44,683 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:44,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1044904245, now seen corresponding path program 106 times [2022-03-01 15:10:44,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:44,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029590816] [2022-03-01 15:10:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:44,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:45,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:45,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029590816] [2022-03-01 15:10:45,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029590816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:45,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:45,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:10:45,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618170849] [2022-03-01 15:10:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:45,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:10:45,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:10:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:10:45,274 INFO L87 Difference]: Start difference. First operand 5423 states and 11101 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:48,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:48,933 INFO L93 Difference]: Finished difference Result 8248 states and 16940 transitions. [2022-03-01 15:10:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:48,933 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:10:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:48,942 INFO L225 Difference]: With dead ends: 8248 [2022-03-01 15:10:48,942 INFO L226 Difference]: Without dead ends: 8248 [2022-03-01 15:10:48,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:10:48,942 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 1528 mSDsluCounter, 10815 mSDsCounter, 0 mSdLazyCounter, 4327 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 11396 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:48,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 11396 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4327 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:10:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8248 states. [2022-03-01 15:10:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8248 to 5405. [2022-03-01 15:10:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5402 states have (on average 2.047945205479452) internal successors, (11063), 5404 states have internal predecessors, (11063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 11063 transitions. [2022-03-01 15:10:48,991 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 11063 transitions. Word has length 99 [2022-03-01 15:10:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:48,991 INFO L470 AbstractCegarLoop]: Abstraction has 5405 states and 11063 transitions. [2022-03-01 15:10:48,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:10:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 11063 transitions. [2022-03-01 15:10:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:48,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:48,995 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] [2022-03-01 15:10:48,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-01 15:10:48,995 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash 564946705, now seen corresponding path program 107 times [2022-03-01 15:10:48,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:48,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618182024] [2022-03-01 15:10:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:49,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:49,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618182024] [2022-03-01 15:10:49,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618182024] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:49,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:49,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:10:49,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553784297] [2022-03-01 15:10:49,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:49,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:10:49,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:49,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:10:49,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:10:49,595 INFO L87 Difference]: Start difference. First operand 5405 states and 11063 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:53,580 INFO L93 Difference]: Finished difference Result 8270 states and 17001 transitions. [2022-03-01 15:10:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:53,580 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:10:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:53,589 INFO L225 Difference]: With dead ends: 8270 [2022-03-01 15:10:53,590 INFO L226 Difference]: Without dead ends: 8270 [2022-03-01 15:10:53,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:10:53,590 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1521 mSDsluCounter, 10020 mSDsCounter, 0 mSdLazyCounter, 4094 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 10591 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:53,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 10591 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4094 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:10:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8270 states. [2022-03-01 15:10:53,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8270 to 5403. [2022-03-01 15:10:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5400 states have (on average 2.0479629629629628) internal successors, (11059), 5402 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 11059 transitions. [2022-03-01 15:10:53,649 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 11059 transitions. Word has length 99 [2022-03-01 15:10:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:53,650 INFO L470 AbstractCegarLoop]: Abstraction has 5403 states and 11059 transitions. [2022-03-01 15:10:53,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 11059 transitions. [2022-03-01 15:10:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:53,653 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:53,654 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] [2022-03-01 15:10:53,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-01 15:10:53,654 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1617503181, now seen corresponding path program 108 times [2022-03-01 15:10:53,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:53,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536690358] [2022-03-01 15:10:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:53,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:54,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:54,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536690358] [2022-03-01 15:10:54,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536690358] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:54,489 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:54,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:10:54,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670280953] [2022-03-01 15:10:54,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:54,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:10:54,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:10:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:10:54,489 INFO L87 Difference]: Start difference. First operand 5403 states and 11059 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:10:57,925 INFO L93 Difference]: Finished difference Result 7927 states and 16279 transitions. [2022-03-01 15:10:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:10:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:10:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:10:57,933 INFO L225 Difference]: With dead ends: 7927 [2022-03-01 15:10:57,933 INFO L226 Difference]: Without dead ends: 7927 [2022-03-01 15:10:57,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:10:57,934 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1622 mSDsluCounter, 9815 mSDsCounter, 0 mSdLazyCounter, 3928 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 10379 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:10:57,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1622 Valid, 10379 Invalid, 3963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3928 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:10:57,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7927 states. [2022-03-01 15:10:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7927 to 5397. [2022-03-01 15:10:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 5394 states have (on average 2.0480163144234336) internal successors, (11047), 5396 states have internal predecessors, (11047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:10:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 11047 transitions. [2022-03-01 15:10:57,987 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 11047 transitions. Word has length 99 [2022-03-01 15:10:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:10:57,987 INFO L470 AbstractCegarLoop]: Abstraction has 5397 states and 11047 transitions. [2022-03-01 15:10:57,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:10:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 11047 transitions. [2022-03-01 15:10:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:10:57,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:10:57,991 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] [2022-03-01 15:10:57,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-01 15:10:57,991 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:10:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:10:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1800973723, now seen corresponding path program 109 times [2022-03-01 15:10:57,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:10:57,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632534185] [2022-03-01 15:10:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:10:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:10:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:10:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:10:58,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:10:58,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632534185] [2022-03-01 15:10:58,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632534185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:10:58,635 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:10:58,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:10:58,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426271409] [2022-03-01 15:10:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:10:58,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:10:58,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:10:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:10:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:10:58,636 INFO L87 Difference]: Start difference. First operand 5397 states and 11047 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:03,145 INFO L93 Difference]: Finished difference Result 7755 states and 15932 transitions. [2022-03-01 15:11:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:03,145 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:03,156 INFO L225 Difference]: With dead ends: 7755 [2022-03-01 15:11:03,156 INFO L226 Difference]: Without dead ends: 7755 [2022-03-01 15:11:03,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:11:03,157 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1556 mSDsluCounter, 9900 mSDsCounter, 0 mSdLazyCounter, 4121 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 10463 SdHoareTripleChecker+Invalid, 4155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:03,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 10463 Invalid, 4155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4121 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 15:11:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7755 states. [2022-03-01 15:11:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7755 to 5425. [2022-03-01 15:11:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5422 states have (on average 2.0481372187384728) internal successors, (11105), 5424 states have internal predecessors, (11105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 11105 transitions. [2022-03-01 15:11:03,226 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 11105 transitions. Word has length 99 [2022-03-01 15:11:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:03,227 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 11105 transitions. [2022-03-01 15:11:03,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 11105 transitions. [2022-03-01 15:11:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:03,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:03,230 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] [2022-03-01 15:11:03,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-03-01 15:11:03,231 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1708330211, now seen corresponding path program 110 times [2022-03-01 15:11:03,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:03,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916217481] [2022-03-01 15:11:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:03,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:03,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916217481] [2022-03-01 15:11:03,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916217481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:03,714 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:03,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:03,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177390377] [2022-03-01 15:11:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:03,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:03,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:03,714 INFO L87 Difference]: Start difference. First operand 5425 states and 11105 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:08,383 INFO L93 Difference]: Finished difference Result 9725 states and 19983 transitions. [2022-03-01 15:11:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:11:08,384 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:08,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:08,396 INFO L225 Difference]: With dead ends: 9725 [2022-03-01 15:11:08,396 INFO L226 Difference]: Without dead ends: 9725 [2022-03-01 15:11:08,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:11:08,397 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1680 mSDsluCounter, 10521 mSDsCounter, 0 mSdLazyCounter, 4175 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 11130 SdHoareTripleChecker+Invalid, 4211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:08,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 11130 Invalid, 4211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 4175 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 15:11:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9725 states. [2022-03-01 15:11:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9725 to 5427. [2022-03-01 15:11:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 5424 states have (on average 2.0481194690265485) internal successors, (11109), 5426 states have internal predecessors, (11109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 11109 transitions. [2022-03-01 15:11:08,489 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 11109 transitions. Word has length 99 [2022-03-01 15:11:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:08,489 INFO L470 AbstractCegarLoop]: Abstraction has 5427 states and 11109 transitions. [2022-03-01 15:11:08,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 11109 transitions. [2022-03-01 15:11:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:08,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:08,493 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] [2022-03-01 15:11:08,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-01 15:11:08,494 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1379467661, now seen corresponding path program 111 times [2022-03-01 15:11:08,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:08,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381160737] [2022-03-01 15:11:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:08,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:09,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:09,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381160737] [2022-03-01 15:11:09,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381160737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:09,250 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:09,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:09,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795125778] [2022-03-01 15:11:09,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:09,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:09,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:09,251 INFO L87 Difference]: Start difference. First operand 5427 states and 11109 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:13,195 INFO L93 Difference]: Finished difference Result 7818 states and 16041 transitions. [2022-03-01 15:11:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:13,195 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:13,205 INFO L225 Difference]: With dead ends: 7818 [2022-03-01 15:11:13,205 INFO L226 Difference]: Without dead ends: 7818 [2022-03-01 15:11:13,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:11:13,206 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1514 mSDsluCounter, 9971 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 10548 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:13,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 10548 Invalid, 3987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:11:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2022-03-01 15:11:13,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 5409. [2022-03-01 15:11:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 5406 states have (on average 2.0479097299297075) internal successors, (11071), 5408 states have internal predecessors, (11071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 11071 transitions. [2022-03-01 15:11:13,269 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 11071 transitions. Word has length 99 [2022-03-01 15:11:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:13,269 INFO L470 AbstractCegarLoop]: Abstraction has 5409 states and 11071 transitions. [2022-03-01 15:11:13,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 11071 transitions. [2022-03-01 15:11:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:13,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:13,273 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] [2022-03-01 15:11:13,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-01 15:11:13,274 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash 230383289, now seen corresponding path program 112 times [2022-03-01 15:11:13,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:13,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789118000] [2022-03-01 15:11:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:13,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:14,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:14,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789118000] [2022-03-01 15:11:14,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789118000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:14,121 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:14,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:14,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899098087] [2022-03-01 15:11:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:14,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:14,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:14,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:14,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:14,122 INFO L87 Difference]: Start difference. First operand 5409 states and 11071 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:19,002 INFO L93 Difference]: Finished difference Result 7840 states and 16102 transitions. [2022-03-01 15:11:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:19,012 INFO L225 Difference]: With dead ends: 7840 [2022-03-01 15:11:19,012 INFO L226 Difference]: Without dead ends: 7840 [2022-03-01 15:11:19,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:11:19,013 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1513 mSDsluCounter, 9831 mSDsCounter, 0 mSdLazyCounter, 3966 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 10398 SdHoareTripleChecker+Invalid, 3997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:19,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 10398 Invalid, 3997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3966 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-01 15:11:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7840 states. [2022-03-01 15:11:19,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7840 to 5407. [2022-03-01 15:11:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5407 states, 5404 states have (on average 2.0479274611398965) internal successors, (11067), 5406 states have internal predecessors, (11067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 11067 transitions. [2022-03-01 15:11:19,086 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 11067 transitions. Word has length 99 [2022-03-01 15:11:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:19,089 INFO L470 AbstractCegarLoop]: Abstraction has 5407 states and 11067 transitions. [2022-03-01 15:11:19,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 11067 transitions. [2022-03-01 15:11:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:19,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:19,094 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] [2022-03-01 15:11:19,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-03-01 15:11:19,094 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1952066597, now seen corresponding path program 113 times [2022-03-01 15:11:19,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:19,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886789754] [2022-03-01 15:11:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:19,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:19,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886789754] [2022-03-01 15:11:19,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886789754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:19,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:19,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:19,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525348251] [2022-03-01 15:11:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:19,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:19,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:19,931 INFO L87 Difference]: Start difference. First operand 5407 states and 11067 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:23,637 INFO L93 Difference]: Finished difference Result 7891 states and 16204 transitions. [2022-03-01 15:11:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:23,637 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:23,646 INFO L225 Difference]: With dead ends: 7891 [2022-03-01 15:11:23,646 INFO L226 Difference]: Without dead ends: 7891 [2022-03-01 15:11:23,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:11:23,647 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1656 mSDsluCounter, 9863 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 10429 SdHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:23,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 10429 Invalid, 4087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:11:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2022-03-01 15:11:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 5403. [2022-03-01 15:11:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5400 states have (on average 2.0479629629629628) internal successors, (11059), 5402 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 11059 transitions. [2022-03-01 15:11:23,708 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 11059 transitions. Word has length 99 [2022-03-01 15:11:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 5403 states and 11059 transitions. [2022-03-01 15:11:23,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 11059 transitions. [2022-03-01 15:11:23,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:23,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:23,713 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] [2022-03-01 15:11:23,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-01 15:11:23,713 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:23,713 INFO L85 PathProgramCache]: Analyzing trace with hash -228584293, now seen corresponding path program 114 times [2022-03-01 15:11:23,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:23,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656166850] [2022-03-01 15:11:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:23,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:24,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:24,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656166850] [2022-03-01 15:11:24,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656166850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:24,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:24,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:24,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798619217] [2022-03-01 15:11:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:24,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:24,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:24,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:24,329 INFO L87 Difference]: Start difference. First operand 5403 states and 11059 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:28,004 INFO L93 Difference]: Finished difference Result 7493 states and 15372 transitions. [2022-03-01 15:11:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:28,004 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:28,013 INFO L225 Difference]: With dead ends: 7493 [2022-03-01 15:11:28,014 INFO L226 Difference]: Without dead ends: 7493 [2022-03-01 15:11:28,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:11:28,014 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1580 mSDsluCounter, 8746 mSDsCounter, 0 mSdLazyCounter, 3449 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 9307 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:28,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 9307 Invalid, 3484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:11:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2022-03-01 15:11:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 5397. [2022-03-01 15:11:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 5394 states have (on average 2.0480163144234336) internal successors, (11047), 5396 states have internal predecessors, (11047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 11047 transitions. [2022-03-01 15:11:28,080 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 11047 transitions. Word has length 99 [2022-03-01 15:11:28,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:28,080 INFO L470 AbstractCegarLoop]: Abstraction has 5397 states and 11047 transitions. [2022-03-01 15:11:28,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:28,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 11047 transitions. [2022-03-01 15:11:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:28,085 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:28,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:11:28,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-01 15:11:28,085 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash -983511297, now seen corresponding path program 115 times [2022-03-01 15:11:28,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:28,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95757815] [2022-03-01 15:11:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:28,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:28,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:28,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95757815] [2022-03-01 15:11:28,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95757815] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:28,698 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:28,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:28,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83531405] [2022-03-01 15:11:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:28,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:28,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:28,699 INFO L87 Difference]: Start difference. First operand 5397 states and 11047 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:32,148 INFO L93 Difference]: Finished difference Result 7865 states and 16155 transitions. [2022-03-01 15:11:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:32,148 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:32,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:32,157 INFO L225 Difference]: With dead ends: 7865 [2022-03-01 15:11:32,157 INFO L226 Difference]: Without dead ends: 7865 [2022-03-01 15:11:32,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:11:32,157 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1601 mSDsluCounter, 9588 mSDsCounter, 0 mSdLazyCounter, 3739 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 10153 SdHoareTripleChecker+Invalid, 3773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:32,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 10153 Invalid, 3773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3739 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:11:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2022-03-01 15:11:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 5428. [2022-03-01 15:11:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5428 states, 5425 states have (on average 2.048294930875576) internal successors, (11112), 5427 states have internal predecessors, (11112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5428 states to 5428 states and 11112 transitions. [2022-03-01 15:11:32,210 INFO L78 Accepts]: Start accepts. Automaton has 5428 states and 11112 transitions. Word has length 99 [2022-03-01 15:11:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:32,210 INFO L470 AbstractCegarLoop]: Abstraction has 5428 states and 11112 transitions. [2022-03-01 15:11:32,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5428 states and 11112 transitions. [2022-03-01 15:11:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:32,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:32,214 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] [2022-03-01 15:11:32,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-01 15:11:32,214 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1076154809, now seen corresponding path program 116 times [2022-03-01 15:11:32,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:32,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099481495] [2022-03-01 15:11:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:32,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:32,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:32,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099481495] [2022-03-01 15:11:32,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099481495] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:32,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:32,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:32,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122794703] [2022-03-01 15:11:32,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:32,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:32,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:32,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:32,898 INFO L87 Difference]: Start difference. First operand 5428 states and 11112 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:36,374 INFO L93 Difference]: Finished difference Result 9947 states and 20449 transitions. [2022-03-01 15:11:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:11:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:36,386 INFO L225 Difference]: With dead ends: 9947 [2022-03-01 15:11:36,386 INFO L226 Difference]: Without dead ends: 9947 [2022-03-01 15:11:36,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:11:36,386 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 1551 mSDsluCounter, 11086 mSDsCounter, 0 mSdLazyCounter, 4072 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 11697 SdHoareTripleChecker+Invalid, 4105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:36,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 11697 Invalid, 4105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4072 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:11:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9947 states. [2022-03-01 15:11:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9947 to 5430. [2022-03-01 15:11:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5430 states, 5427 states have (on average 2.0482771328542473) internal successors, (11116), 5429 states have internal predecessors, (11116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 11116 transitions. [2022-03-01 15:11:36,459 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 11116 transitions. Word has length 99 [2022-03-01 15:11:36,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:36,459 INFO L470 AbstractCegarLoop]: Abstraction has 5430 states and 11116 transitions. [2022-03-01 15:11:36,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 11116 transitions. [2022-03-01 15:11:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:36,464 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:36,464 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] [2022-03-01 15:11:36,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-01 15:11:36,464 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:36,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash 131014615, now seen corresponding path program 117 times [2022-03-01 15:11:36,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:36,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582715307] [2022-03-01 15:11:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:36,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:36,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582715307] [2022-03-01 15:11:36,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582715307] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:36,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:36,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:36,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906840039] [2022-03-01 15:11:36,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:36,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:36,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:36,975 INFO L87 Difference]: Start difference. First operand 5430 states and 11116 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:41,853 INFO L93 Difference]: Finished difference Result 7969 states and 16365 transitions. [2022-03-01 15:11:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:41,862 INFO L225 Difference]: With dead ends: 7969 [2022-03-01 15:11:41,862 INFO L226 Difference]: Without dead ends: 7969 [2022-03-01 15:11:41,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:11:41,862 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1513 mSDsluCounter, 10528 mSDsCounter, 0 mSdLazyCounter, 4099 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 11107 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:41,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 11107 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4099 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 15:11:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7969 states. [2022-03-01 15:11:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7969 to 5412. [2022-03-01 15:11:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5409 states have (on average 2.0480680347568865) internal successors, (11078), 5411 states have internal predecessors, (11078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 11078 transitions. [2022-03-01 15:11:41,918 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 11078 transitions. Word has length 99 [2022-03-01 15:11:41,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:41,918 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 11078 transitions. [2022-03-01 15:11:41,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:41,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 11078 transitions. [2022-03-01 15:11:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:41,922 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:41,922 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] [2022-03-01 15:11:41,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-01 15:11:41,923 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:41,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1864208313, now seen corresponding path program 118 times [2022-03-01 15:11:41,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:41,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335844728] [2022-03-01 15:11:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:42,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:42,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335844728] [2022-03-01 15:11:42,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335844728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:42,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:42,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:42,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303772037] [2022-03-01 15:11:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:42,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:42,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:42,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:42,592 INFO L87 Difference]: Start difference. First operand 5412 states and 11078 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:48,440 INFO L93 Difference]: Finished difference Result 9980 states and 20501 transitions. [2022-03-01 15:11:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-01 15:11:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:48,453 INFO L225 Difference]: With dead ends: 9980 [2022-03-01 15:11:48,453 INFO L226 Difference]: Without dead ends: 9980 [2022-03-01 15:11:48,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 15:11:48,454 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1649 mSDsluCounter, 12000 mSDsCounter, 0 mSdLazyCounter, 4375 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 12635 SdHoareTripleChecker+Invalid, 4409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:48,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 12635 Invalid, 4409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4375 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-01 15:11:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9980 states. [2022-03-01 15:11:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9980 to 5413. [2022-03-01 15:11:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5410 states have (on average 2.048059149722736) internal successors, (11080), 5412 states have internal predecessors, (11080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 11080 transitions. [2022-03-01 15:11:48,531 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 11080 transitions. Word has length 99 [2022-03-01 15:11:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:48,531 INFO L470 AbstractCegarLoop]: Abstraction has 5413 states and 11080 transitions. [2022-03-01 15:11:48,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 11080 transitions. [2022-03-01 15:11:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:48,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:48,536 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] [2022-03-01 15:11:48,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-01 15:11:48,536 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:48,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1885401385, now seen corresponding path program 119 times [2022-03-01 15:11:48,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:48,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555869363] [2022-03-01 15:11:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:48,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:49,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:49,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555869363] [2022-03-01 15:11:49,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555869363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:49,267 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:49,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:49,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786186808] [2022-03-01 15:11:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:49,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:49,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:49,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:49,268 INFO L87 Difference]: Start difference. First operand 5413 states and 11080 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:53,348 INFO L93 Difference]: Finished difference Result 8986 states and 18444 transitions. [2022-03-01 15:11:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:11:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:11:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:53,359 INFO L225 Difference]: With dead ends: 8986 [2022-03-01 15:11:53,360 INFO L226 Difference]: Without dead ends: 8986 [2022-03-01 15:11:53,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1044, Invalid=4962, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:11:53,360 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1648 mSDsluCounter, 11480 mSDsCounter, 0 mSdLazyCounter, 4305 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 12083 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:53,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 12083 Invalid, 4339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4305 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:11:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2022-03-01 15:11:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 5415. [2022-03-01 15:11:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5412 states have (on average 2.048041389504804) internal successors, (11084), 5414 states have internal predecessors, (11084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 11084 transitions. [2022-03-01 15:11:53,434 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 11084 transitions. Word has length 99 [2022-03-01 15:11:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 5415 states and 11084 transitions. [2022-03-01 15:11:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:11:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 11084 transitions. [2022-03-01 15:11:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:53,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:53,440 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] [2022-03-01 15:11:53,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-01 15:11:53,440 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash 575588439, now seen corresponding path program 120 times [2022-03-01 15:11:53,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:53,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383079877] [2022-03-01 15:11:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:53,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:54,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:54,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383079877] [2022-03-01 15:11:54,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383079877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:54,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:54,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:11:54,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818457474] [2022-03-01 15:11:54,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:54,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:11:54,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:11:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:11:54,116 INFO L87 Difference]: Start difference. First operand 5415 states and 11084 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:11:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:11:57,375 INFO L93 Difference]: Finished difference Result 7941 states and 16290 transitions. [2022-03-01 15:11:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:11:57,375 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:11:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:11:57,385 INFO L225 Difference]: With dead ends: 7941 [2022-03-01 15:11:57,385 INFO L226 Difference]: Without dead ends: 7941 [2022-03-01 15:11:57,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:11:57,385 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1532 mSDsluCounter, 9940 mSDsCounter, 0 mSdLazyCounter, 3660 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 10519 SdHoareTripleChecker+Invalid, 3700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:11:57,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 10519 Invalid, 3700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3660 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:11:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7941 states. [2022-03-01 15:11:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7941 to 5404. [2022-03-01 15:11:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5401 states have (on average 2.0479540825773004) internal successors, (11061), 5403 states have internal predecessors, (11061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:11:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 11061 transitions. [2022-03-01 15:11:57,454 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 11061 transitions. Word has length 99 [2022-03-01 15:11:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:11:57,454 INFO L470 AbstractCegarLoop]: Abstraction has 5404 states and 11061 transitions. [2022-03-01 15:11:57,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:11:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 11061 transitions. [2022-03-01 15:11:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:11:57,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:11:57,459 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] [2022-03-01 15:11:57,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-01 15:11:57,459 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:11:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:11:57,459 INFO L85 PathProgramCache]: Analyzing trace with hash 543473033, now seen corresponding path program 121 times [2022-03-01 15:11:57,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:11:57,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014021260] [2022-03-01 15:11:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:11:57,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:11:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:11:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:11:58,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:11:58,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014021260] [2022-03-01 15:11:58,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014021260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:11:58,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:11:58,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:11:58,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403713095] [2022-03-01 15:11:58,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:11:58,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:11:58,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:11:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:11:58,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:11:58,082 INFO L87 Difference]: Start difference. First operand 5404 states and 11061 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:01,464 INFO L93 Difference]: Finished difference Result 8208 states and 16877 transitions. [2022-03-01 15:12:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:01,464 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:12:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:01,473 INFO L225 Difference]: With dead ends: 8208 [2022-03-01 15:12:01,473 INFO L226 Difference]: Without dead ends: 8208 [2022-03-01 15:12:01,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:12:01,474 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1541 mSDsluCounter, 10445 mSDsCounter, 0 mSdLazyCounter, 4222 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 11015 SdHoareTripleChecker+Invalid, 4255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:01,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 11015 Invalid, 4255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4222 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:12:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8208 states. [2022-03-01 15:12:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8208 to 5422. [2022-03-01 15:12:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5422 states, 5419 states have (on average 2.0481638678723013) internal successors, (11099), 5421 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 11099 transitions. [2022-03-01 15:12:01,540 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 11099 transitions. Word has length 99 [2022-03-01 15:12:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:01,541 INFO L470 AbstractCegarLoop]: Abstraction has 5422 states and 11099 transitions. [2022-03-01 15:12:01,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 11099 transitions. [2022-03-01 15:12:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:01,545 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:01,545 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] [2022-03-01 15:12:01,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-01 15:12:01,546 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash 450829521, now seen corresponding path program 122 times [2022-03-01 15:12:01,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:01,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96277373] [2022-03-01 15:12:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:01,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:02,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:02,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96277373] [2022-03-01 15:12:02,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96277373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:02,121 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:02,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-03-01 15:12:02,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309958928] [2022-03-01 15:12:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:02,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-01 15:12:02,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-01 15:12:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 15:12:02,122 INFO L87 Difference]: Start difference. First operand 5422 states and 11099 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 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) [2022-03-01 15:12:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:06,788 INFO L93 Difference]: Finished difference Result 10323 states and 21223 transitions. [2022-03-01 15:12:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 15:12:06,788 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 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 [2022-03-01 15:12:06,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:06,801 INFO L225 Difference]: With dead ends: 10323 [2022-03-01 15:12:06,801 INFO L226 Difference]: Without dead ends: 10323 [2022-03-01 15:12:06,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1415, Invalid=6417, Unknown=0, NotChecked=0, Total=7832 [2022-03-01 15:12:06,802 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 1788 mSDsluCounter, 14402 mSDsCounter, 0 mSdLazyCounter, 5644 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 15067 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:06,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1788 Valid, 15067 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5644 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 15:12:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10323 states. [2022-03-01 15:12:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10323 to 5424. [2022-03-01 15:12:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5421 states have (on average 2.0481460985058106) internal successors, (11103), 5423 states have internal predecessors, (11103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 11103 transitions. [2022-03-01 15:12:06,880 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 11103 transitions. Word has length 99 [2022-03-01 15:12:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:06,880 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 11103 transitions. [2022-03-01 15:12:06,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 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) [2022-03-01 15:12:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 11103 transitions. [2022-03-01 15:12:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:06,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:06,884 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] [2022-03-01 15:12:06,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-01 15:12:06,885 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1657998945, now seen corresponding path program 123 times [2022-03-01 15:12:06,885 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:06,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737947830] [2022-03-01 15:12:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:07,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:07,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737947830] [2022-03-01 15:12:07,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737947830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:07,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:07,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-01 15:12:07,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530561038] [2022-03-01 15:12:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:07,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-01 15:12:07,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:07,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-01 15:12:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-03-01 15:12:07,420 INFO L87 Difference]: Start difference. First operand 5424 states and 11103 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:12:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:11,603 INFO L93 Difference]: Finished difference Result 8271 states and 16986 transitions. [2022-03-01 15:12:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 15:12:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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 [2022-03-01 15:12:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:11,614 INFO L225 Difference]: With dead ends: 8271 [2022-03-01 15:12:11,614 INFO L226 Difference]: Without dead ends: 8271 [2022-03-01 15:12:11,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=901, Invalid=4355, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 15:12:11,614 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1537 mSDsluCounter, 9215 mSDsCounter, 0 mSdLazyCounter, 3499 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 9785 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:11,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 9785 Invalid, 3533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3499 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:12:11,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2022-03-01 15:12:11,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 5406. [2022-03-01 15:12:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5403 states have (on average 2.047936331667592) internal successors, (11065), 5405 states have internal predecessors, (11065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 11065 transitions. [2022-03-01 15:12:11,686 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 11065 transitions. Word has length 99 [2022-03-01 15:12:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:11,686 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 11065 transitions. [2022-03-01 15:12:11,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 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) [2022-03-01 15:12:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 11065 transitions. [2022-03-01 15:12:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:11,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:11,691 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] [2022-03-01 15:12:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-01 15:12:11,691 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1027117401, now seen corresponding path program 124 times [2022-03-01 15:12:11,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:11,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771611037] [2022-03-01 15:12:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:12,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:12,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771611037] [2022-03-01 15:12:12,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771611037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:12,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:12,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:12:12,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258167478] [2022-03-01 15:12:12,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:12,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:12:12,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:12:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:12:12,538 INFO L87 Difference]: Start difference. First operand 5406 states and 11065 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:15,861 INFO L93 Difference]: Finished difference Result 7952 states and 16329 transitions. [2022-03-01 15:12:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:15,861 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:12:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:15,869 INFO L225 Difference]: With dead ends: 7952 [2022-03-01 15:12:15,869 INFO L226 Difference]: Without dead ends: 7952 [2022-03-01 15:12:15,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:12:15,870 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1642 mSDsluCounter, 8620 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 9188 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:15,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 9188 Invalid, 3327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:12:15,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2022-03-01 15:12:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 5403. [2022-03-01 15:12:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5400 states have (on average 2.0479629629629628) internal successors, (11059), 5402 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 11059 transitions. [2022-03-01 15:12:15,926 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 11059 transitions. Word has length 99 [2022-03-01 15:12:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:15,927 INFO L470 AbstractCegarLoop]: Abstraction has 5403 states and 11059 transitions. [2022-03-01 15:12:15,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 11059 transitions. [2022-03-01 15:12:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:15,931 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:15,931 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] [2022-03-01 15:12:15,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-03-01 15:12:15,931 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash -210721965, now seen corresponding path program 125 times [2022-03-01 15:12:15,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:15,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429543073] [2022-03-01 15:12:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:16,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:16,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429543073] [2022-03-01 15:12:16,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429543073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:16,701 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:16,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-01 15:12:16,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070217881] [2022-03-01 15:12:16,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:16,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 15:12:16,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:16,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 15:12:16,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 15:12:16,702 INFO L87 Difference]: Start difference. First operand 5403 states and 11059 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:12:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:21,073 INFO L93 Difference]: Finished difference Result 9284 states and 19117 transitions. [2022-03-01 15:12:21,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 15:12:21,073 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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 [2022-03-01 15:12:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:21,086 INFO L225 Difference]: With dead ends: 9284 [2022-03-01 15:12:21,087 INFO L226 Difference]: Without dead ends: 9284 [2022-03-01 15:12:21,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1406, Invalid=7150, Unknown=0, NotChecked=0, Total=8556 [2022-03-01 15:12:21,088 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 2052 mSDsluCounter, 9779 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 10353 SdHoareTripleChecker+Invalid, 3998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:21,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 10353 Invalid, 3998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3945 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:12:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9284 states. [2022-03-01 15:12:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9284 to 5718. [2022-03-01 15:12:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5715 states have (on average 2.0549431321084866) internal successors, (11744), 5717 states have internal predecessors, (11744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 11744 transitions. [2022-03-01 15:12:21,172 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 11744 transitions. Word has length 99 [2022-03-01 15:12:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:21,172 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 11744 transitions. [2022-03-01 15:12:21,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 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) [2022-03-01 15:12:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 11744 transitions. [2022-03-01 15:12:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:21,176 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:21,176 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] [2022-03-01 15:12:21,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-01 15:12:21,177 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:21,177 INFO L85 PathProgramCache]: Analyzing trace with hash 891344015, now seen corresponding path program 126 times [2022-03-01 15:12:21,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:21,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213363146] [2022-03-01 15:12:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:21,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:21,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:21,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213363146] [2022-03-01 15:12:21,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213363146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:21,798 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:21,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:12:21,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085722437] [2022-03-01 15:12:21,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:21,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:12:21,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:12:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:12:21,799 INFO L87 Difference]: Start difference. First operand 5718 states and 11744 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:25,489 INFO L93 Difference]: Finished difference Result 9740 states and 20035 transitions. [2022-03-01 15:12:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:25,490 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:12:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:25,503 INFO L225 Difference]: With dead ends: 9740 [2022-03-01 15:12:25,503 INFO L226 Difference]: Without dead ends: 9740 [2022-03-01 15:12:25,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:12:25,504 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1591 mSDsluCounter, 10386 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 10956 SdHoareTripleChecker+Invalid, 4136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:25,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 10956 Invalid, 4136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:12:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9740 states. [2022-03-01 15:12:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9740 to 5425. [2022-03-01 15:12:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5422 states have (on average 2.0481372187384728) internal successors, (11105), 5424 states have internal predecessors, (11105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 11105 transitions. [2022-03-01 15:12:25,587 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 11105 transitions. Word has length 99 [2022-03-01 15:12:25,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:25,587 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 11105 transitions. [2022-03-01 15:12:25,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 11105 transitions. [2022-03-01 15:12:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:25,592 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:25,592 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] [2022-03-01 15:12:25,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-03-01 15:12:25,593 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash -303365477, now seen corresponding path program 127 times [2022-03-01 15:12:25,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:25,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364538782] [2022-03-01 15:12:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:25,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:26,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:26,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364538782] [2022-03-01 15:12:26,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364538782] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:26,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:26,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:12:26,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578560044] [2022-03-01 15:12:26,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:26,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:12:26,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:12:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:12:26,440 INFO L87 Difference]: Start difference. First operand 5425 states and 11105 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:12:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:31,569 INFO L93 Difference]: Finished difference Result 10235 states and 21042 transitions. [2022-03-01 15:12:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:12:31,569 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:12:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:31,580 INFO L225 Difference]: With dead ends: 10235 [2022-03-01 15:12:31,581 INFO L226 Difference]: Without dead ends: 10235 [2022-03-01 15:12:31,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-01 15:12:31,581 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1810 mSDsluCounter, 10308 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 10924 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:31,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 10924 Invalid, 3879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:12:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2022-03-01 15:12:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 5427. [2022-03-01 15:12:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 5424 states have (on average 2.0481194690265485) internal successors, (11109), 5426 states have internal predecessors, (11109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 11109 transitions. [2022-03-01 15:12:31,652 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 11109 transitions. Word has length 99 [2022-03-01 15:12:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:31,652 INFO L470 AbstractCegarLoop]: Abstraction has 5427 states and 11109 transitions. [2022-03-01 15:12:31,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:12:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 11109 transitions. [2022-03-01 15:12:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:31,656 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:31,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:12:31,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-03-01 15:12:31,657 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash 903803947, now seen corresponding path program 128 times [2022-03-01 15:12:31,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:31,657 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874654586] [2022-03-01 15:12:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:31,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:32,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:32,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874654586] [2022-03-01 15:12:32,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874654586] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:32,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:32,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:12:32,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378195923] [2022-03-01 15:12:32,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:32,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:12:32,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:32,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:12:32,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:12:32,221 INFO L87 Difference]: Start difference. First operand 5427 states and 11109 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:36,436 INFO L93 Difference]: Finished difference Result 8328 states and 17100 transitions. [2022-03-01 15:12:36,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:36,436 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:12:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:36,447 INFO L225 Difference]: With dead ends: 8328 [2022-03-01 15:12:36,448 INFO L226 Difference]: Without dead ends: 8328 [2022-03-01 15:12:36,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:12:36,448 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1627 mSDsluCounter, 9835 mSDsCounter, 0 mSdLazyCounter, 3941 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 10419 SdHoareTripleChecker+Invalid, 3975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:36,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 10419 Invalid, 3975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3941 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:12:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8328 states. [2022-03-01 15:12:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8328 to 5409. [2022-03-01 15:12:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 5406 states have (on average 2.0479097299297075) internal successors, (11071), 5408 states have internal predecessors, (11071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 11071 transitions. [2022-03-01 15:12:36,524 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 11071 transitions. Word has length 99 [2022-03-01 15:12:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:36,524 INFO L470 AbstractCegarLoop]: Abstraction has 5409 states and 11071 transitions. [2022-03-01 15:12:36,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 11071 transitions. [2022-03-01 15:12:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:36,529 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:36,529 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] [2022-03-01 15:12:36,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-03-01 15:12:36,529 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:36,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1781312399, now seen corresponding path program 129 times [2022-03-01 15:12:36,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:36,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485954842] [2022-03-01 15:12:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:37,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:37,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485954842] [2022-03-01 15:12:37,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485954842] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:37,042 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:37,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:12:37,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859996975] [2022-03-01 15:12:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:37,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:12:37,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:12:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:12:37,042 INFO L87 Difference]: Start difference. First operand 5409 states and 11071 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:40,630 INFO L93 Difference]: Finished difference Result 8350 states and 17161 transitions. [2022-03-01 15:12:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:40,631 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:12:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:40,640 INFO L225 Difference]: With dead ends: 8350 [2022-03-01 15:12:40,641 INFO L226 Difference]: Without dead ends: 8350 [2022-03-01 15:12:40,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:12:40,641 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1608 mSDsluCounter, 9688 mSDsCounter, 0 mSdLazyCounter, 3769 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 10262 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:40,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 10262 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3769 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 15:12:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8350 states. [2022-03-01 15:12:40,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8350 to 5407. [2022-03-01 15:12:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5407 states, 5404 states have (on average 2.0479274611398965) internal successors, (11067), 5406 states have internal predecessors, (11067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 11067 transitions. [2022-03-01 15:12:40,705 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 11067 transitions. Word has length 99 [2022-03-01 15:12:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:40,706 INFO L470 AbstractCegarLoop]: Abstraction has 5407 states and 11067 transitions. [2022-03-01 15:12:40,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 11067 transitions. [2022-03-01 15:12:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:40,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:40,710 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] [2022-03-01 15:12:40,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-03-01 15:12:40,710 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:40,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:40,710 INFO L85 PathProgramCache]: Analyzing trace with hash 331205011, now seen corresponding path program 130 times [2022-03-01 15:12:40,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:40,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474318078] [2022-03-01 15:12:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:40,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:41,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:41,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474318078] [2022-03-01 15:12:41,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474318078] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:41,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:41,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:12:41,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799218976] [2022-03-01 15:12:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:41,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:12:41,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:41,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:12:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:12:41,253 INFO L87 Difference]: Start difference. First operand 5407 states and 11067 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:45,538 INFO L93 Difference]: Finished difference Result 8007 states and 16439 transitions. [2022-03-01 15:12:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:45,538 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:12:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:45,548 INFO L225 Difference]: With dead ends: 8007 [2022-03-01 15:12:45,548 INFO L226 Difference]: Without dead ends: 8007 [2022-03-01 15:12:45,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:12:45,548 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1575 mSDsluCounter, 10002 mSDsCounter, 0 mSdLazyCounter, 4014 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 10569 SdHoareTripleChecker+Invalid, 4048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:45,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 10569 Invalid, 4048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4014 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:12:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8007 states. [2022-03-01 15:12:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8007 to 5401. [2022-03-01 15:12:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 5398 states have (on average 2.047980733605039) internal successors, (11055), 5400 states have internal predecessors, (11055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 11055 transitions. [2022-03-01 15:12:45,617 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 11055 transitions. Word has length 99 [2022-03-01 15:12:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:45,617 INFO L470 AbstractCegarLoop]: Abstraction has 5401 states and 11055 transitions. [2022-03-01 15:12:45,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 11055 transitions. [2022-03-01 15:12:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:45,622 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:45,622 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] [2022-03-01 15:12:45,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-03-01 15:12:45,622 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:45,623 INFO L85 PathProgramCache]: Analyzing trace with hash -545285381, now seen corresponding path program 131 times [2022-03-01 15:12:45,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:45,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301673363] [2022-03-01 15:12:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:45,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:46,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:46,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301673363] [2022-03-01 15:12:46,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301673363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:46,436 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:46,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:12:46,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376137209] [2022-03-01 15:12:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:46,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:12:46,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:46,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:12:46,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:12:46,437 INFO L87 Difference]: Start difference. First operand 5401 states and 11055 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:12:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:50,325 INFO L93 Difference]: Finished difference Result 8360 states and 17181 transitions. [2022-03-01 15:12:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:12:50,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:50,335 INFO L225 Difference]: With dead ends: 8360 [2022-03-01 15:12:50,335 INFO L226 Difference]: Without dead ends: 8360 [2022-03-01 15:12:50,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:12:50,336 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1600 mSDsluCounter, 10227 mSDsCounter, 0 mSdLazyCounter, 4059 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 10802 SdHoareTripleChecker+Invalid, 4098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:50,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 10802 Invalid, 4098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4059 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:12:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8360 states. [2022-03-01 15:12:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8360 to 5429. [2022-03-01 15:12:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5429 states, 5426 states have (on average 2.048101732399558) internal successors, (11113), 5428 states have internal predecessors, (11113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5429 states to 5429 states and 11113 transitions. [2022-03-01 15:12:50,406 INFO L78 Accepts]: Start accepts. Automaton has 5429 states and 11113 transitions. Word has length 99 [2022-03-01 15:12:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:50,406 INFO L470 AbstractCegarLoop]: Abstraction has 5429 states and 11113 transitions. [2022-03-01 15:12:50,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:12:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5429 states and 11113 transitions. [2022-03-01 15:12:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:50,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:50,411 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] [2022-03-01 15:12:50,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-03-01 15:12:50,411 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash -637928893, now seen corresponding path program 132 times [2022-03-01 15:12:50,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:50,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330217662] [2022-03-01 15:12:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:50,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:50,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330217662] [2022-03-01 15:12:50,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330217662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:50,871 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:50,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:12:50,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267600912] [2022-03-01 15:12:50,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:50,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:12:50,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:12:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:12:50,872 INFO L87 Difference]: Start difference. First operand 5429 states and 11113 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:54,911 INFO L93 Difference]: Finished difference Result 10330 states and 21232 transitions. [2022-03-01 15:12:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 15:12:54,911 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:12:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:54,922 INFO L225 Difference]: With dead ends: 10330 [2022-03-01 15:12:54,922 INFO L226 Difference]: Without dead ends: 10330 [2022-03-01 15:12:54,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-01 15:12:54,923 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 1548 mSDsluCounter, 11525 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 12146 SdHoareTripleChecker+Invalid, 4438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:54,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 12146 Invalid, 4438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:12:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10330 states. [2022-03-01 15:12:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10330 to 5431. [2022-03-01 15:12:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 5428 states have (on average 2.0480840088430363) internal successors, (11117), 5430 states have internal predecessors, (11117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 11117 transitions. [2022-03-01 15:12:54,991 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 11117 transitions. Word has length 99 [2022-03-01 15:12:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:54,991 INFO L470 AbstractCegarLoop]: Abstraction has 5431 states and 11117 transitions. [2022-03-01 15:12:54,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:12:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 11117 transitions. [2022-03-01 15:12:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:54,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:54,995 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] [2022-03-01 15:12:54,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-03-01 15:12:54,996 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash 569240531, now seen corresponding path program 133 times [2022-03-01 15:12:54,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:54,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748752397] [2022-03-01 15:12:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:54,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:12:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:12:55,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:12:55,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748752397] [2022-03-01 15:12:55,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748752397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:12:55,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:12:55,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:12:55,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329613858] [2022-03-01 15:12:55,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:12:55,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:12:55,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:12:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:12:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:12:55,788 INFO L87 Difference]: Start difference. First operand 5431 states and 11117 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:12:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:12:59,152 INFO L93 Difference]: Finished difference Result 8423 states and 17290 transitions. [2022-03-01 15:12:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:12:59,156 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:12:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:12:59,167 INFO L225 Difference]: With dead ends: 8423 [2022-03-01 15:12:59,167 INFO L226 Difference]: Without dead ends: 8423 [2022-03-01 15:12:59,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:12:59,168 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 1741 mSDsluCounter, 10045 mSDsCounter, 0 mSdLazyCounter, 3923 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 10634 SdHoareTripleChecker+Invalid, 3967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:12:59,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 10634 Invalid, 3967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3923 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 15:12:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8423 states. [2022-03-01 15:12:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8423 to 5413. [2022-03-01 15:12:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5410 states have (on average 2.0478743068391867) internal successors, (11079), 5412 states have internal predecessors, (11079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:12:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 11079 transitions. [2022-03-01 15:12:59,242 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 11079 transitions. Word has length 99 [2022-03-01 15:12:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:12:59,242 INFO L470 AbstractCegarLoop]: Abstraction has 5413 states and 11079 transitions. [2022-03-01 15:12:59,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:12:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 11079 transitions. [2022-03-01 15:12:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:12:59,247 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:12:59,247 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] [2022-03-01 15:12:59,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-03-01 15:12:59,247 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:12:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:12:59,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2115875815, now seen corresponding path program 134 times [2022-03-01 15:12:59,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:12:59,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807169151] [2022-03-01 15:12:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:12:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:12:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:13:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:13:00,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:13:00,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807169151] [2022-03-01 15:13:00,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807169151] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:13:00,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:13:00,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:13:00,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671943089] [2022-03-01 15:13:00,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:13:00,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:13:00,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:13:00,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:13:00,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:13:00,020 INFO L87 Difference]: Start difference. First operand 5413 states and 11079 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:13:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:13:03,700 INFO L93 Difference]: Finished difference Result 8445 states and 17351 transitions. [2022-03-01 15:13:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:13:03,700 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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 [2022-03-01 15:13:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:13:03,712 INFO L225 Difference]: With dead ends: 8445 [2022-03-01 15:13:03,712 INFO L226 Difference]: Without dead ends: 8445 [2022-03-01 15:13:03,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-01 15:13:03,713 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1583 mSDsluCounter, 10164 mSDsCounter, 0 mSdLazyCounter, 4261 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 10743 SdHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:13:03,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 10743 Invalid, 4295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4261 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-01 15:13:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8445 states. [2022-03-01 15:13:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8445 to 5411. [2022-03-01 15:13:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5408 states have (on average 2.0478920118343193) internal successors, (11075), 5410 states have internal predecessors, (11075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:13:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 11075 transitions. [2022-03-01 15:13:03,795 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 11075 transitions. Word has length 99 [2022-03-01 15:13:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:13:03,795 INFO L470 AbstractCegarLoop]: Abstraction has 5411 states and 11075 transitions. [2022-03-01 15:13:03,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) [2022-03-01 15:13:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 11075 transitions. [2022-03-01 15:13:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:13:03,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:13:03,799 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] [2022-03-01 15:13:03,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-03-01 15:13:03,799 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:13:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:13:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash -3358405, now seen corresponding path program 135 times [2022-03-01 15:13:03,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:13:03,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785300646] [2022-03-01 15:13:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:13:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:13:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:13:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:13:04,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:13:04,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785300646] [2022-03-01 15:13:04,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785300646] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:13:04,470 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:13:04,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:13:04,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533408225] [2022-03-01 15:13:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:13:04,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:13:04,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:13:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:13:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:13:04,471 INFO L87 Difference]: Start difference. First operand 5411 states and 11075 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:13:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:13:08,910 INFO L93 Difference]: Finished difference Result 8496 states and 17453 transitions. [2022-03-01 15:13:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:13:08,911 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:13:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:13:08,922 INFO L225 Difference]: With dead ends: 8496 [2022-03-01 15:13:08,923 INFO L226 Difference]: Without dead ends: 8496 [2022-03-01 15:13:08,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=958, Invalid=4742, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:13:08,924 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1881 mSDsluCounter, 9419 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 9997 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:13:08,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1881 Valid, 9997 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 15:13:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8496 states. [2022-03-01 15:13:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8496 to 5407. [2022-03-01 15:13:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5407 states, 5404 states have (on average 2.0479274611398965) internal successors, (11067), 5406 states have internal predecessors, (11067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:13:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 11067 transitions. [2022-03-01 15:13:09,001 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 11067 transitions. Word has length 99 [2022-03-01 15:13:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:13:09,001 INFO L470 AbstractCegarLoop]: Abstraction has 5407 states and 11067 transitions. [2022-03-01 15:13:09,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:13:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 11067 transitions. [2022-03-01 15:13:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:13:09,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:13:09,006 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] [2022-03-01 15:13:09,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-03-01 15:13:09,006 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:13:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:13:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1720123899, now seen corresponding path program 136 times [2022-03-01 15:13:09,007 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:13:09,007 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513958637] [2022-03-01 15:13:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:13:09,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:13:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:13:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:13:09,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:13:09,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513958637] [2022-03-01 15:13:09,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513958637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:13:09,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:13:09,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-01 15:13:09,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227131376] [2022-03-01 15:13:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:13:09,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-01 15:13:09,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:13:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-01 15:13:09,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 15:13:09,716 INFO L87 Difference]: Start difference. First operand 5407 states and 11067 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:13:13,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:13:13,431 INFO L93 Difference]: Finished difference Result 8098 states and 16621 transitions. [2022-03-01 15:13:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-01 15:13:13,432 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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 [2022-03-01 15:13:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:13:13,443 INFO L225 Difference]: With dead ends: 8098 [2022-03-01 15:13:13,443 INFO L226 Difference]: Without dead ends: 8098 [2022-03-01 15:13:13,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=958, Invalid=4742, Unknown=0, NotChecked=0, Total=5700 [2022-03-01 15:13:13,444 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1601 mSDsluCounter, 9447 mSDsCounter, 0 mSdLazyCounter, 3698 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 10020 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-01 15:13:13,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 10020 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3698 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-01 15:13:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8098 states. [2022-03-01 15:13:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8098 to 5398. [2022-03-01 15:13:13,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5395 states have (on average 2.0480074142724747) internal successors, (11049), 5397 states have internal predecessors, (11049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:13:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 11049 transitions. [2022-03-01 15:13:13,529 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 11049 transitions. Word has length 99 [2022-03-01 15:13:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:13:13,530 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 11049 transitions. [2022-03-01 15:13:13,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 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) [2022-03-01 15:13:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 11049 transitions. [2022-03-01 15:13:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 15:13:13,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:13:13,534 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] [2022-03-01 15:13:13,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-03-01 15:13:13,535 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-01 15:13:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:13:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1582414983, now seen corresponding path program 137 times [2022-03-01 15:13:13,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:13:13,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339567396] [2022-03-01 15:13:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:13:13,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:13:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:13:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:13:14,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:13:14,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339567396] [2022-03-01 15:13:14,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339567396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:13:14,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:13:14,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-01 15:13:14,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489225702] [2022-03-01 15:13:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:13:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-01 15:13:14,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:13:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-01 15:13:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-01 15:13:14,432 INFO L87 Difference]: Start difference. First operand 5398 states and 11049 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 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) Received shutdown request... [2022-03-01 15:13:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 15:13:15,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=354, Invalid=1808, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 15:13:15,912 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 362 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 15:13:15,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2031 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 15:13:15,913 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-03-01 15:13:15,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-03-01 15:13:15,914 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (5398states) and FLOYD_HOARE automaton (currently 18 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 47 known predicates. [2022-03-01 15:13:15,915 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-03-01 15:13:15,918 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-03-01 15:13:15,918 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-03-01 15:13:15,918 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 7 remaining) [2022-03-01 15:13:15,918 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-03-01 15:13:15,918 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-03-01 15:13:15,921 INFO L732 BasicCegarLoop]: Path program histogram: [137, 33, 1, 1, 1] [2022-03-01 15:13:15,922 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 15:13:15,929 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 15:13:15,929 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 15:13:15,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 03:13:15 BasicIcfg [2022-03-01 15:13:15,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 15:13:15,939 INFO L158 Benchmark]: Toolchain (without parser) took 851464.82ms. Allocated memory was 215.0MB in the beginning and 766.5MB in the end (delta: 551.6MB). Free memory was 156.9MB in the beginning and 455.9MB in the end (delta: -299.0MB). Peak memory consumption was 254.1MB. Max. memory is 8.0GB. [2022-03-01 15:13:15,939 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 215.0MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 15:13:15,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.12ms. Allocated memory was 215.0MB in the beginning and 359.7MB in the end (delta: 144.7MB). Free memory was 156.8MB in the beginning and 315.8MB in the end (delta: -159.0MB). Peak memory consumption was 6.2MB. Max. memory is 8.0GB. [2022-03-01 15:13:15,939 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.31ms. Allocated memory is still 359.7MB. Free memory was 315.8MB in the beginning and 313.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 15:13:15,939 INFO L158 Benchmark]: Boogie Preprocessor took 26.63ms. Allocated memory is still 359.7MB. Free memory was 313.1MB in the beginning and 311.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 15:13:15,939 INFO L158 Benchmark]: RCFGBuilder took 370.35ms. Allocated memory is still 359.7MB. Free memory was 311.6MB in the beginning and 295.3MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-03-01 15:13:15,946 INFO L158 Benchmark]: TraceAbstraction took 850621.02ms. Allocated memory was 359.7MB in the beginning and 766.5MB in the end (delta: 406.8MB). Free memory was 294.8MB in the beginning and 455.9MB in the end (delta: -161.1MB). Peak memory consumption was 246.7MB. Max. memory is 8.0GB. [2022-03-01 15:13:15,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 215.0MB. Free memory is still 174.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 388.12ms. Allocated memory was 215.0MB in the beginning and 359.7MB in the end (delta: 144.7MB). Free memory was 156.8MB in the beginning and 315.8MB in the end (delta: -159.0MB). Peak memory consumption was 6.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.31ms. Allocated memory is still 359.7MB. Free memory was 315.8MB in the beginning and 313.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.63ms. Allocated memory is still 359.7MB. Free memory was 313.1MB in the beginning and 311.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 370.35ms. Allocated memory is still 359.7MB. Free memory was 311.6MB in the beginning and 295.3MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 850621.02ms. Allocated memory was 359.7MB in the beginning and 766.5MB in the end (delta: 406.8MB). Free memory was 294.8MB in the beginning and 455.9MB in the end (delta: -161.1MB). Peak memory consumption was 246.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 832]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5398states) and FLOYD_HOARE automaton (currently 18 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 47 known predicates. - TimeoutResultAtElement [Line: 836]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5398states) and FLOYD_HOARE automaton (currently 18 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 47 known predicates. - TimeoutResultAtElement [Line: 837]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5398states) and FLOYD_HOARE automaton (currently 18 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 47 known predicates. - TimeoutResultAtElement [Line: 854]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5398states) and FLOYD_HOARE automaton (currently 18 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 47 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 220 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 850.4s, OverallIterations: 173, TraceHistogramMax: 1, PathProgramHistogramMax: 137, EmptinessCheckTime: 0.8s, AutomataDifference: 725.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 269188 SdHoareTripleChecker+Valid, 206.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 269188 mSDsluCounter, 1599854 SdHoareTripleChecker+Invalid, 177.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1508593 mSDsCounter, 6257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 594892 IncrementalHoareTripleChecker+Invalid, 601149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6257 mSolverCounterUnsat, 91261 mSDtfsCounter, 594892 mSolverCounterSat, 3.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13565 GetRequests, 734 SyntacticMatches, 103 SemanticMatches, 12727 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170637 ImplicationChecksByTransitivity, 559.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5772occurred in iteration=66, InterpolantAutomatonStates: 8229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.5s AutomataMinimizationTime, 172 MinimizatonAttempts, 418648 StatesRemovedByMinimization, 171 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 109.8s InterpolantComputationTime, 16886 NumberOfCodeBlocks, 16886 NumberOfCodeBlocksAsserted, 173 NumberOfCheckSat, 16713 ConstructedInterpolants, 0 QuantifiedInterpolants, 297305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 173 InterpolantComputations, 173 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown