/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-?-bc289cb [2022-01-28 12:23:18,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 12:23:18,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 12:23:18,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 12:23:18,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 12:23:18,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 12:23:18,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 12:23:18,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 12:23:18,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 12:23:18,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 12:23:18,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 12:23:18,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-28 12:23:18,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-28 12:23:18,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-28 12:23:18,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-28 12:23:18,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-28 12:23:18,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-28 12:23:18,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-28 12:23:18,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-28 12:23:18,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-28 12:23:18,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-28 12:23:18,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-28 12:23:18,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-28 12:23:18,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-28 12:23:18,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-28 12:23:18,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-28 12:23:18,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-28 12:23:18,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-28 12:23:18,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-28 12:23:18,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-28 12:23:18,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-28 12:23:18,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-28 12:23:18,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-28 12:23:18,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-28 12:23:18,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-28 12:23:18,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-28 12:23:18,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-28 12:23:18,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-28 12:23:18,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 12:23:18,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 12:23:18,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 12:23:18,312 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 [2022-01-28 12:23:18,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 12:23:18,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 12:23:18,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 12:23:18,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 12:23:18,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 12:23:18,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 12:23:18,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 12:23:18,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 12:23:18,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 12:23:18,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 12:23:18,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 12:23:18,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 12:23:18,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 12:23:18,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 12:23:18,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 12:23:18,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 12:23:18,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 12:23:18,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 12:23:18,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 12:23:18,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 12:23:18,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-28 12:23:18,504 INFO L275 PluginConnector]: CDTParser initialized [2022-01-28 12:23:18,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-01-28 12:23:18,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b015d29f/85e88da6c1f741c49a07cfdbac2e0298/FLAG08a3acf33 [2022-01-28 12:23:18,975 INFO L306 CDTParser]: Found 1 translation units. [2022-01-28 12:23:18,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-01-28 12:23:18,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b015d29f/85e88da6c1f741c49a07cfdbac2e0298/FLAG08a3acf33 [2022-01-28 12:23:19,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b015d29f/85e88da6c1f741c49a07cfdbac2e0298 [2022-01-28 12:23:19,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 12:23:19,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-28 12:23:19,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-28 12:23:19,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-28 12:23:19,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-28 12:23:19,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65040140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19, skipping insertion in model container [2022-01-28 12:23:19,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-28 12:23:19,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-28 12:23:19,535 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-28 12:23:19,656 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] [2022-01-28 12:23:19,658 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] [2022-01-28 12:23:19,659 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] [2022-01-28 12:23:19,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 12:23:19,667 INFO L203 MainTranslator]: Completed pre-run [2022-01-28 12:23:19,683 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-28 12:23:19,712 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] [2022-01-28 12:23:19,713 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] [2022-01-28 12:23:19,713 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] [2022-01-28 12:23:19,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2022-01-28 12:23:19,749 INFO L208 MainTranslator]: Completed translation [2022-01-28 12:23:19,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19 WrapperNode [2022-01-28 12:23:19,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-28 12:23:19,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 12:23:19,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 12:23:19,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 12:23:19,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,802 INFO L137 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2022-01-28 12:23:19,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 12:23:19,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 12:23:19,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 12:23:19,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 12:23:19,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 12:23:19,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 12:23:19,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 12:23:19,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 12:23:19,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (1/1) ... [2022-01-28 12:23:19,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 12:23:19,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 12:23:19,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-28 12:23:19,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-28 12:23:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-01-28 12:23:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-01-28 12:23:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-28 12:23:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-28 12:23:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-28 12:23:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-28 12:23:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-28 12:23:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-28 12:23:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 12:23:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 12:23:19,902 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 12:23:19,992 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 12:23:19,993 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 12:23:20,197 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 12:23:20,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 12:23:20,203 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-28 12:23:20,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:23:20 BoogieIcfgContainer [2022-01-28 12:23:20,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 12:23:20,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 12:23:20,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 12:23:20,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 12:23:20,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:23:19" (1/3) ... [2022-01-28 12:23:20,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a014b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:23:20, skipping insertion in model container [2022-01-28 12:23:20,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:23:19" (2/3) ... [2022-01-28 12:23:20,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a014b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:23:20, skipping insertion in model container [2022-01-28 12:23:20,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:23:20" (3/3) ... [2022-01-28 12:23:20,215 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-01-28 12:23:20,218 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 12:23:20,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 12:23:20,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-28 12:23:20,218 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 12:23:20,239 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,239 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,239 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,239 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,240 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,241 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,254 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,261 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,266 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,266 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,271 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,271 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,271 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-28 12:23:20,274 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-28 12:23:20,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 12:23:20,305 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, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-28 12:23:20,305 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-28 12:23:20,313 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 158 transitions, 324 flow [2022-01-28 12:23:20,423 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) [2022-01-28 12:23:20,428 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) [2022-01-28 12:23:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-28 12:23:20,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:20,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:23:20,434 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)] === [2022-01-28 12:23:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:20,437 INFO L85 PathProgramCache]: Analyzing trace with hash 847621616, now seen corresponding path program 1 times [2022-01-28 12:23:20,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:20,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192176994] [2022-01-28 12:23:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:20,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:20,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:20,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192176994] [2022-01-28 12:23:20,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192176994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:20,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:20,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-28 12:23:20,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093399572] [2022-01-28 12:23:20,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:20,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-28 12:23:20,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-28 12:23:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 12:23:20,655 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) [2022-01-28 12:23:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:20,699 INFO L93 Difference]: Finished difference Result 2540 states and 5152 transitions. [2022-01-28 12:23:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 12:23:20,701 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 [2022-01-28 12:23:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:20,722 INFO L225 Difference]: With dead ends: 2540 [2022-01-28 12:23:20,722 INFO L226 Difference]: Without dead ends: 2540 [2022-01-28 12:23:20,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-28 12:23:20,732 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 [2022-01-28 12:23:20,734 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] [2022-01-28 12:23:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-01-28 12:23:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2540. [2022-01-28 12:23:20,872 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) [2022-01-28 12:23:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 5152 transitions. [2022-01-28 12:23:20,879 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 5152 transitions. Word has length 40 [2022-01-28 12:23:20,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:20,879 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 5152 transitions. [2022-01-28 12:23:20,879 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) [2022-01-28 12:23:20,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 5152 transitions. [2022-01-28 12:23:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-28 12:23:20,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:20,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:23:20,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 12:23:20,882 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)] === [2022-01-28 12:23:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 506434889, now seen corresponding path program 1 times [2022-01-28 12:23:20,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:20,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429826345] [2022-01-28 12:23:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:20,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:20,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:20,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429826345] [2022-01-28 12:23:20,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429826345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:20,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:20,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 12:23:20,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137122139] [2022-01-28 12:23:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:20,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 12:23:20,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 12:23:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 12:23:20,944 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) [2022-01-28 12:23:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:20,994 INFO L93 Difference]: Finished difference Result 4136 states and 8424 transitions. [2022-01-28 12:23:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 12:23:20,995 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 [2022-01-28 12:23:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:21,007 INFO L225 Difference]: With dead ends: 4136 [2022-01-28 12:23:21,008 INFO L226 Difference]: Without dead ends: 4136 [2022-01-28 12:23:21,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 12:23:21,009 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 [2022-01-28 12:23:21,009 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] [2022-01-28 12:23:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2022-01-28 12:23:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3148. [2022-01-28 12:23:21,072 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) [2022-01-28 12:23:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 6422 transitions. [2022-01-28 12:23:21,080 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 6422 transitions. Word has length 41 [2022-01-28 12:23:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:21,081 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 6422 transitions. [2022-01-28 12:23:21,081 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) [2022-01-28 12:23:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 6422 transitions. [2022-01-28 12:23:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-28 12:23:21,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:21,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:23:21,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 12:23:21,088 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)] === [2022-01-28 12:23:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash -654644372, now seen corresponding path program 1 times [2022-01-28 12:23:21,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:21,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637643866] [2022-01-28 12:23:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:21,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:21,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:21,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637643866] [2022-01-28 12:23:21,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637643866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:21,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:21,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-28 12:23:21,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863815107] [2022-01-28 12:23:21,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:21,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-28 12:23:21,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-28 12:23:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-01-28 12:23:21,535 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) [2022-01-28 12:23:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:22,924 INFO L93 Difference]: Finished difference Result 3509 states and 7163 transitions. [2022-01-28 12:23:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-28 12:23:22,925 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 [2022-01-28 12:23:22,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:22,936 INFO L225 Difference]: With dead ends: 3509 [2022-01-28 12:23:22,937 INFO L226 Difference]: Without dead ends: 3353 [2022-01-28 12:23:22,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=361, Invalid=971, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:23:22,938 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 [2022-01-28 12:23:22,939 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] [2022-01-28 12:23:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2022-01-28 12:23:22,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3088. [2022-01-28 12:23:22,996 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) [2022-01-28 12:23:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 6311 transitions. [2022-01-28 12:23:23,003 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 6311 transitions. Word has length 74 [2022-01-28 12:23:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:23,005 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 6311 transitions. [2022-01-28 12:23:23,005 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) [2022-01-28 12:23:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 6311 transitions. [2022-01-28 12:23:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:23:23,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:23,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:23:23,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 12:23:23,010 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)] === [2022-01-28 12:23:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1119085425, now seen corresponding path program 1 times [2022-01-28 12:23:23,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:23,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834575948] [2022-01-28 12:23:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:23,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:23,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:23,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834575948] [2022-01-28 12:23:23,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834575948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:23,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:23,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:23:23,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126784254] [2022-01-28 12:23:23,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:23,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:23:23,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:23:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:23:23,727 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) [2022-01-28 12:23:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:29,621 INFO L93 Difference]: Finished difference Result 4311 states and 8834 transitions. [2022-01-28 12:23:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:23:29,621 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 [2022-01-28 12:23:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:29,635 INFO L225 Difference]: With dead ends: 4311 [2022-01-28 12:23:29,635 INFO L226 Difference]: Without dead ends: 4311 [2022-01-28 12:23:29,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1453, Invalid=4247, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:23:29,643 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 [2022-01-28 12:23:29,644 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] [2022-01-28 12:23:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-01-28 12:23:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3439. [2022-01-28 12:23:29,714 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) [2022-01-28 12:23:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 7037 transitions. [2022-01-28 12:23:29,759 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 7037 transitions. Word has length 96 [2022-01-28 12:23:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:29,761 INFO L470 AbstractCegarLoop]: Abstraction has 3439 states and 7037 transitions. [2022-01-28 12:23:29,761 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) [2022-01-28 12:23:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 7037 transitions. [2022-01-28 12:23:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:23:29,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:29,776 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] [2022-01-28 12:23:29,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 12:23:29,779 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)] === [2022-01-28 12:23:29,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1259521701, now seen corresponding path program 2 times [2022-01-28 12:23:29,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:29,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527883373] [2022-01-28 12:23:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:29,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:30,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:30,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527883373] [2022-01-28 12:23:30,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527883373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:30,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:30,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:23:30,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343790313] [2022-01-28 12:23:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:30,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:23:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:23:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:23:30,402 INFO L87 Difference]: Start difference. First operand 3439 states and 7037 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) [2022-01-28 12:23:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:35,605 INFO L93 Difference]: Finished difference Result 4308 states and 8822 transitions. [2022-01-28 12:23:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-28 12:23:35,605 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 [2022-01-28 12:23:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:35,620 INFO L225 Difference]: With dead ends: 4308 [2022-01-28 12:23:35,620 INFO L226 Difference]: Without dead ends: 4308 [2022-01-28 12:23:35,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1434, Invalid=4116, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:23:35,622 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1298 mSDsluCounter, 3910 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:23:35,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 4248 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:23:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-01-28 12:23:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3443. [2022-01-28 12:23:35,675 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) [2022-01-28 12:23:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 7045 transitions. [2022-01-28 12:23:35,681 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 7045 transitions. Word has length 96 [2022-01-28 12:23:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:35,682 INFO L470 AbstractCegarLoop]: Abstraction has 3443 states and 7045 transitions. [2022-01-28 12:23:35,682 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) [2022-01-28 12:23:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 7045 transitions. [2022-01-28 12:23:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:23:35,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:35,685 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] [2022-01-28 12:23:35,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-28 12:23:35,685 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)] === [2022-01-28 12:23:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2109335891, now seen corresponding path program 3 times [2022-01-28 12:23:35,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:35,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012384604] [2022-01-28 12:23:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:35,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:36,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:36,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012384604] [2022-01-28 12:23:36,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012384604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:36,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:36,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:23:36,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521129568] [2022-01-28 12:23:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:36,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:23:36,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:23:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:23:36,371 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) [2022-01-28 12:23:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:41,914 INFO L93 Difference]: Finished difference Result 4297 states and 8799 transitions. [2022-01-28 12:23:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-28 12:23:41,915 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 [2022-01-28 12:23:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:41,936 INFO L225 Difference]: With dead ends: 4297 [2022-01-28 12:23:41,936 INFO L226 Difference]: Without dead ends: 4297 [2022-01-28 12:23:41,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1536, Invalid=4470, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:23:41,938 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 1288 mSDsluCounter, 4346 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 4675 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:23:41,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 4675 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 12:23:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2022-01-28 12:23:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3444. [2022-01-28 12:23:41,986 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) [2022-01-28 12:23:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 7047 transitions. [2022-01-28 12:23:41,993 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 7047 transitions. Word has length 96 [2022-01-28 12:23:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:41,993 INFO L470 AbstractCegarLoop]: Abstraction has 3444 states and 7047 transitions. [2022-01-28 12:23:41,994 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) [2022-01-28 12:23:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 7047 transitions. [2022-01-28 12:23:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:23:41,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:41,997 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] [2022-01-28 12:23:41,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-28 12:23:41,998 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)] === [2022-01-28 12:23:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash -340043283, now seen corresponding path program 4 times [2022-01-28 12:23:41,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:41,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398599106] [2022-01-28 12:23:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:41,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:42,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:42,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398599106] [2022-01-28 12:23:42,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398599106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:42,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:42,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:23:42,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560195946] [2022-01-28 12:23:42,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:42,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:23:42,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:23:42,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:23:42,602 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) [2022-01-28 12:23:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:47,710 INFO L93 Difference]: Finished difference Result 4348 states and 8903 transitions. [2022-01-28 12:23:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:23:47,711 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 [2022-01-28 12:23:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:47,718 INFO L225 Difference]: With dead ends: 4348 [2022-01-28 12:23:47,718 INFO L226 Difference]: Without dead ends: 4348 [2022-01-28 12:23:47,719 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 [2022-01-28 12:23:47,719 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1374 mSDsluCounter, 3996 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:23:47,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 4338 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-28 12:23:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2022-01-28 12:23:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 3473. [2022-01-28 12:23:47,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 3470 states have (on average 2.048126801152738) internal successors, (7107), 3472 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:23:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 7107 transitions. [2022-01-28 12:23:47,767 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 7107 transitions. Word has length 96 [2022-01-28 12:23:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:47,767 INFO L470 AbstractCegarLoop]: Abstraction has 3473 states and 7107 transitions. [2022-01-28 12:23:47,767 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) [2022-01-28 12:23:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 7107 transitions. [2022-01-28 12:23:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:23:47,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:47,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:23:47,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-28 12:23:47,771 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)] === [2022-01-28 12:23:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1585435859, now seen corresponding path program 5 times [2022-01-28 12:23:47,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:47,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311394333] [2022-01-28 12:23:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:47,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:48,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:48,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311394333] [2022-01-28 12:23:48,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311394333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:48,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:48,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:23:48,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495944720] [2022-01-28 12:23:48,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:48,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:23:48,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:48,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:23:48,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:23:48,285 INFO L87 Difference]: Start difference. First operand 3473 states and 7107 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) [2022-01-28 12:23:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:51,975 INFO L93 Difference]: Finished difference Result 4346 states and 8892 transitions. [2022-01-28 12:23:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:23:51,976 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 [2022-01-28 12:23:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:51,987 INFO L225 Difference]: With dead ends: 4346 [2022-01-28 12:23:51,987 INFO L226 Difference]: Without dead ends: 4346 [2022-01-28 12:23:51,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1216, Invalid=3614, Unknown=0, NotChecked=0, Total=4830 [2022-01-28 12:23:51,989 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1395 mSDsluCounter, 4062 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:23:51,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1395 Valid, 4405 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-28 12:23:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2022-01-28 12:23:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 3548. [2022-01-28 12:23:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3545 states have (on average 2.048236953455571) internal successors, (7261), 3547 states have internal predecessors, (7261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:23:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 7261 transitions. [2022-01-28 12:23:52,060 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 7261 transitions. Word has length 96 [2022-01-28 12:23:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:52,060 INFO L470 AbstractCegarLoop]: Abstraction has 3548 states and 7261 transitions. [2022-01-28 12:23:52,061 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) [2022-01-28 12:23:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 7261 transitions. [2022-01-28 12:23:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:23:52,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:52,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:23:52,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-28 12:23:52,065 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)] === [2022-01-28 12:23:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash 735621669, now seen corresponding path program 6 times [2022-01-28 12:23:52,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122238746] [2022-01-28 12:23:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:52,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:52,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:52,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122238746] [2022-01-28 12:23:52,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122238746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:52,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:52,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:23:52,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860611630] [2022-01-28 12:23:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:52,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:23:52,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:52,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:23:52,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:23:52,568 INFO L87 Difference]: Start difference. First operand 3548 states and 7261 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) [2022-01-28 12:23:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:23:57,889 INFO L93 Difference]: Finished difference Result 4360 states and 8919 transitions. [2022-01-28 12:23:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:23:57,890 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 [2022-01-28 12:23:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:23:57,905 INFO L225 Difference]: With dead ends: 4360 [2022-01-28 12:23:57,905 INFO L226 Difference]: Without dead ends: 4360 [2022-01-28 12:23:57,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1327, Invalid=3929, Unknown=0, NotChecked=0, Total=5256 [2022-01-28 12:23:57,917 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1411 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 4933 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:23:57,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 4933 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-28 12:23:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2022-01-28 12:23:58,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 3549. [2022-01-28 12:23:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 3546 states have (on average 2.048223350253807) internal successors, (7263), 3548 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:23:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 7263 transitions. [2022-01-28 12:23:58,009 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 7263 transitions. Word has length 96 [2022-01-28 12:23:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:23:58,009 INFO L470 AbstractCegarLoop]: Abstraction has 3549 states and 7263 transitions. [2022-01-28 12:23:58,009 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) [2022-01-28 12:23:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 7263 transitions. [2022-01-28 12:23:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:23:58,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:23:58,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:23:58,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-28 12:23:58,015 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)] === [2022-01-28 12:23:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:23:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1790053019, now seen corresponding path program 7 times [2022-01-28 12:23:58,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:23:58,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146790027] [2022-01-28 12:23:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:23:58,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:23:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:23:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:23:58,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:23:58,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146790027] [2022-01-28 12:23:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146790027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:23:58,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:23:58,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:23:58,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512208014] [2022-01-28 12:23:58,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:23:58,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:23:58,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:23:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:23:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:23:58,728 INFO L87 Difference]: Start difference. First operand 3549 states and 7263 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) [2022-01-28 12:24:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:03,154 INFO L93 Difference]: Finished difference Result 4283 states and 8762 transitions. [2022-01-28 12:24:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-28 12:24:03,154 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 [2022-01-28 12:24:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:03,160 INFO L225 Difference]: With dead ends: 4283 [2022-01-28 12:24:03,160 INFO L226 Difference]: Without dead ends: 4283 [2022-01-28 12:24:03,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1178, Invalid=2982, Unknown=0, NotChecked=0, Total=4160 [2022-01-28 12:24:03,162 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1314 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:03,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 4779 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:24:03,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2022-01-28 12:24:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3661. [2022-01-28 12:24:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 3658 states have (on average 2.0483870967741935) internal successors, (7493), 3660 states have internal predecessors, (7493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 7493 transitions. [2022-01-28 12:24:03,237 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 7493 transitions. Word has length 96 [2022-01-28 12:24:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:03,237 INFO L470 AbstractCegarLoop]: Abstraction has 3661 states and 7493 transitions. [2022-01-28 12:24:03,238 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) [2022-01-28 12:24:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 7493 transitions. [2022-01-28 12:24:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:03,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:03,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:03,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-28 12:24:03,242 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)] === [2022-01-28 12:24:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1937409939, now seen corresponding path program 8 times [2022-01-28 12:24:03,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:03,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335682179] [2022-01-28 12:24:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:03,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:03,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:03,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335682179] [2022-01-28 12:24:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335682179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:03,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:03,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:03,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774543551] [2022-01-28 12:24:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:03,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:03,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:03,792 INFO L87 Difference]: Start difference. First operand 3661 states and 7493 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) [2022-01-28 12:24:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:07,135 INFO L93 Difference]: Finished difference Result 4343 states and 8877 transitions. [2022-01-28 12:24:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-28 12:24:07,135 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 [2022-01-28 12:24:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:07,142 INFO L225 Difference]: With dead ends: 4343 [2022-01-28 12:24:07,142 INFO L226 Difference]: Without dead ends: 4343 [2022-01-28 12:24:07,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=842, Invalid=2940, Unknown=0, NotChecked=0, Total=3782 [2022-01-28 12:24:07,143 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1325 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 5242 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:07,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 5242 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-28 12:24:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2022-01-28 12:24:07,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 3679. [2022-01-28 12:24:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 3676 states have (on average 2.0481501632208925) internal successors, (7529), 3678 states have internal predecessors, (7529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 7529 transitions. [2022-01-28 12:24:07,185 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 7529 transitions. Word has length 96 [2022-01-28 12:24:07,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:07,185 INFO L470 AbstractCegarLoop]: Abstraction has 3679 states and 7529 transitions. [2022-01-28 12:24:07,185 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) [2022-01-28 12:24:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 7529 transitions. [2022-01-28 12:24:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:07,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:07,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:07,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-28 12:24:07,189 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)] === [2022-01-28 12:24:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:07,189 INFO L85 PathProgramCache]: Analyzing trace with hash -588264749, now seen corresponding path program 9 times [2022-01-28 12:24:07,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:07,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100120169] [2022-01-28 12:24:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:07,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:07,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:07,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100120169] [2022-01-28 12:24:07,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100120169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:07,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:07,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:07,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312725932] [2022-01-28 12:24:07,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:07,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:07,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:07,913 INFO L87 Difference]: Start difference. First operand 3679 states and 7529 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) [2022-01-28 12:24:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:12,486 INFO L93 Difference]: Finished difference Result 4279 states and 8746 transitions. [2022-01-28 12:24:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 12:24:12,487 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 [2022-01-28 12:24:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:12,497 INFO L225 Difference]: With dead ends: 4279 [2022-01-28 12:24:12,497 INFO L226 Difference]: Without dead ends: 4279 [2022-01-28 12:24:12,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1204, Invalid=3086, Unknown=0, NotChecked=0, Total=4290 [2022-01-28 12:24:12,498 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1181 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:12,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 4217 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:24:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2022-01-28 12:24:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 3644. [2022-01-28 12:24:12,534 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) [2022-01-28 12:24:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 7457 transitions. [2022-01-28 12:24:12,539 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 7457 transitions. Word has length 96 [2022-01-28 12:24:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:12,539 INFO L470 AbstractCegarLoop]: Abstraction has 3644 states and 7457 transitions. [2022-01-28 12:24:12,539 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) [2022-01-28 12:24:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 7457 transitions. [2022-01-28 12:24:12,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:12,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:12,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:12,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-28 12:24:12,543 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)] === [2022-01-28 12:24:12,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash 847590765, now seen corresponding path program 10 times [2022-01-28 12:24:12,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:12,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022408990] [2022-01-28 12:24:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:12,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:13,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:13,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022408990] [2022-01-28 12:24:13,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022408990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:13,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:13,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:13,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588589823] [2022-01-28 12:24:13,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:13,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:13,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:13,191 INFO L87 Difference]: Start difference. First operand 3644 states and 7457 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) [2022-01-28 12:24:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:21,308 INFO L93 Difference]: Finished difference Result 4538 states and 9276 transitions. [2022-01-28 12:24:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-28 12:24:21,309 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 [2022-01-28 12:24:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:21,315 INFO L225 Difference]: With dead ends: 4538 [2022-01-28 12:24:21,315 INFO L226 Difference]: Without dead ends: 4538 [2022-01-28 12:24:21,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2967, Invalid=7335, Unknown=0, NotChecked=0, Total=10302 [2022-01-28 12:24:21,317 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1435 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:21,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1435 Valid, 3955 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:24:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4538 states. [2022-01-28 12:24:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4538 to 3743. [2022-01-28 12:24:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 3740 states have (on average 2.047326203208556) internal successors, (7657), 3742 states have internal predecessors, (7657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:21,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 7657 transitions. [2022-01-28 12:24:21,395 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 7657 transitions. Word has length 96 [2022-01-28 12:24:21,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:21,396 INFO L470 AbstractCegarLoop]: Abstraction has 3743 states and 7657 transitions. [2022-01-28 12:24:21,396 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) [2022-01-28 12:24:21,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 7657 transitions. [2022-01-28 12:24:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:21,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:21,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:21,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-28 12:24:21,399 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)] === [2022-01-28 12:24:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1757374095, now seen corresponding path program 11 times [2022-01-28 12:24:21,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:21,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549453957] [2022-01-28 12:24:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:21,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:21,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:21,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549453957] [2022-01-28 12:24:21,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549453957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:21,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:21,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:21,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095190962] [2022-01-28 12:24:21,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:21,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:21,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:21,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:21,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:21,920 INFO L87 Difference]: Start difference. First operand 3743 states and 7657 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) [2022-01-28 12:24:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:26,503 INFO L93 Difference]: Finished difference Result 5252 states and 10791 transitions. [2022-01-28 12:24:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:24:26,503 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 [2022-01-28 12:24:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:26,509 INFO L225 Difference]: With dead ends: 5252 [2022-01-28 12:24:26,509 INFO L226 Difference]: Without dead ends: 5252 [2022-01-28 12:24:26,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1452, Invalid=4248, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:24:26,510 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1226 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 4907 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:26,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 4907 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:24:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2022-01-28 12:24:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 3977. [2022-01-28 12:24:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3974 states have (on average 2.055611474584801) internal successors, (8169), 3976 states have internal predecessors, (8169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 8169 transitions. [2022-01-28 12:24:26,561 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 8169 transitions. Word has length 96 [2022-01-28 12:24:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:26,561 INFO L470 AbstractCegarLoop]: Abstraction has 3977 states and 8169 transitions. [2022-01-28 12:24:26,561 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) [2022-01-28 12:24:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 8169 transitions. [2022-01-28 12:24:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:26,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:26,565 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] [2022-01-28 12:24:26,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-28 12:24:26,565 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)] === [2022-01-28 12:24:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1616937819, now seen corresponding path program 12 times [2022-01-28 12:24:26,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:26,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631386034] [2022-01-28 12:24:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:26,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:27,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:27,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631386034] [2022-01-28 12:24:27,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631386034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:27,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:27,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:27,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487018785] [2022-01-28 12:24:27,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:27,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:27,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:27,076 INFO L87 Difference]: Start difference. First operand 3977 states and 8169 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) [2022-01-28 12:24:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:32,323 INFO L93 Difference]: Finished difference Result 5249 states and 10779 transitions. [2022-01-28 12:24:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-28 12:24:32,323 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 [2022-01-28 12:24:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:32,329 INFO L225 Difference]: With dead ends: 5249 [2022-01-28 12:24:32,329 INFO L226 Difference]: Without dead ends: 5249 [2022-01-28 12:24:32,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1433, Invalid=4117, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:24:32,332 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1227 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:32,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 4950 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-28 12:24:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5249 states. [2022-01-28 12:24:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5249 to 3981. [2022-01-28 12:24:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3978 states have (on average 2.0555555555555554) internal successors, (8177), 3980 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 8177 transitions. [2022-01-28 12:24:32,384 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 8177 transitions. Word has length 96 [2022-01-28 12:24:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:32,384 INFO L470 AbstractCegarLoop]: Abstraction has 3981 states and 8177 transitions. [2022-01-28 12:24:32,384 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) [2022-01-28 12:24:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 8177 transitions. [2022-01-28 12:24:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:32,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:32,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:32,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-28 12:24:32,388 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)] === [2022-01-28 12:24:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash 767123629, now seen corresponding path program 13 times [2022-01-28 12:24:32,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:32,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191444148] [2022-01-28 12:24:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:32,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:32,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191444148] [2022-01-28 12:24:32,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191444148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:32,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:32,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:32,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272070789] [2022-01-28 12:24:32,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:32,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:32,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:32,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:32,890 INFO L87 Difference]: Start difference. First operand 3981 states and 8177 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) [2022-01-28 12:24:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:38,352 INFO L93 Difference]: Finished difference Result 5238 states and 10756 transitions. [2022-01-28 12:24:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-28 12:24:38,352 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 [2022-01-28 12:24:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:38,358 INFO L225 Difference]: With dead ends: 5238 [2022-01-28 12:24:38,358 INFO L226 Difference]: Without dead ends: 5238 [2022-01-28 12:24:38,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1535, Invalid=4471, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:24:38,360 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1281 mSDsluCounter, 5150 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 5488 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:38,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 5488 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-28 12:24:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2022-01-28 12:24:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3982. [2022-01-28 12:24:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3979 states have (on average 2.055541593365167) internal successors, (8179), 3981 states have internal predecessors, (8179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 8179 transitions. [2022-01-28 12:24:38,417 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 8179 transitions. Word has length 96 [2022-01-28 12:24:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:38,417 INFO L470 AbstractCegarLoop]: Abstraction has 3982 states and 8179 transitions. [2022-01-28 12:24:38,417 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) [2022-01-28 12:24:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 8179 transitions. [2022-01-28 12:24:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:38,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:38,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:38,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-28 12:24:38,420 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)] === [2022-01-28 12:24:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:38,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1758551059, now seen corresponding path program 14 times [2022-01-28 12:24:38,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:38,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147698062] [2022-01-28 12:24:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:38,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:38,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:38,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147698062] [2022-01-28 12:24:38,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147698062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:38,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:38,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:38,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451803174] [2022-01-28 12:24:38,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:38,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:38,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:38,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:38,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:38,996 INFO L87 Difference]: Start difference. First operand 3982 states and 8179 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) [2022-01-28 12:24:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:43,496 INFO L93 Difference]: Finished difference Result 5289 states and 10860 transitions. [2022-01-28 12:24:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:24:43,497 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 [2022-01-28 12:24:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:43,502 INFO L225 Difference]: With dead ends: 5289 [2022-01-28 12:24:43,502 INFO L226 Difference]: Without dead ends: 5289 [2022-01-28 12:24:43,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1386, Invalid=3444, Unknown=0, NotChecked=0, Total=4830 [2022-01-28 12:24:43,503 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1487 mSDsluCounter, 3775 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:43,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 4126 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-28 12:24:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2022-01-28 12:24:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 3991. [2022-01-28 12:24:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 3988 states have (on average 2.055416248746239) internal successors, (8197), 3990 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 8197 transitions. [2022-01-28 12:24:43,591 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 8197 transitions. Word has length 96 [2022-01-28 12:24:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:43,591 INFO L470 AbstractCegarLoop]: Abstraction has 3991 states and 8197 transitions. [2022-01-28 12:24:43,591 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) [2022-01-28 12:24:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 8197 transitions. [2022-01-28 12:24:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:43,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:43,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:43,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-28 12:24:43,595 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)] === [2022-01-28 12:24:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash 166928083, now seen corresponding path program 15 times [2022-01-28 12:24:43,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:43,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972116179] [2022-01-28 12:24:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:43,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:43,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:44,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972116179] [2022-01-28 12:24:44,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972116179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:44,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:44,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:44,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706761192] [2022-01-28 12:24:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:44,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:44,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:44,002 INFO L87 Difference]: Start difference. First operand 3991 states and 8197 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) [2022-01-28 12:24:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:47,507 INFO L93 Difference]: Finished difference Result 5167 states and 10600 transitions. [2022-01-28 12:24:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:24:47,507 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 [2022-01-28 12:24:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:47,515 INFO L225 Difference]: With dead ends: 5167 [2022-01-28 12:24:47,515 INFO L226 Difference]: Without dead ends: 5167 [2022-01-28 12:24:47,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1215, Invalid=3615, Unknown=0, NotChecked=0, Total=4830 [2022-01-28 12:24:47,517 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1214 mSDsluCounter, 5144 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:47,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 5496 Invalid, 2439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:24:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2022-01-28 12:24:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 4043. [2022-01-28 12:24:47,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 4040 states have (on average 2.0544554455445545) internal successors, (8300), 4042 states have internal predecessors, (8300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 8300 transitions. [2022-01-28 12:24:47,596 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 8300 transitions. Word has length 96 [2022-01-28 12:24:47,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:47,596 INFO L470 AbstractCegarLoop]: Abstraction has 4043 states and 8300 transitions. [2022-01-28 12:24:47,596 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) [2022-01-28 12:24:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 8300 transitions. [2022-01-28 12:24:47,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:47,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:47,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:47,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-28 12:24:47,600 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)] === [2022-01-28 12:24:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash -682886107, now seen corresponding path program 16 times [2022-01-28 12:24:47,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:47,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55208218] [2022-01-28 12:24:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:47,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:48,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:48,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55208218] [2022-01-28 12:24:48,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55208218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:48,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:48,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694641618] [2022-01-28 12:24:48,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:48,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:48,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:48,141 INFO L87 Difference]: Start difference. First operand 4043 states and 8300 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) [2022-01-28 12:24:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:52,545 INFO L93 Difference]: Finished difference Result 5181 states and 10627 transitions. [2022-01-28 12:24:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:24:52,550 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 [2022-01-28 12:24:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:52,556 INFO L225 Difference]: With dead ends: 5181 [2022-01-28 12:24:52,556 INFO L226 Difference]: Without dead ends: 5181 [2022-01-28 12:24:52,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1326, Invalid=3930, Unknown=0, NotChecked=0, Total=5256 [2022-01-28 12:24:52,557 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1252 mSDsluCounter, 4150 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:52,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 4493 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:24:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2022-01-28 12:24:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 4044. [2022-01-28 12:24:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 4041 states have (on average 2.054441969809453) internal successors, (8302), 4043 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 8302 transitions. [2022-01-28 12:24:52,606 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 8302 transitions. Word has length 96 [2022-01-28 12:24:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:52,606 INFO L470 AbstractCegarLoop]: Abstraction has 4044 states and 8302 transitions. [2022-01-28 12:24:52,606 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) [2022-01-28 12:24:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 8302 transitions. [2022-01-28 12:24:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:52,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:52,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:52,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-28 12:24:52,610 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)] === [2022-01-28 12:24:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:52,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1086406501, now seen corresponding path program 17 times [2022-01-28 12:24:52,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:52,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567712992] [2022-01-28 12:24:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:52,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:53,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:53,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567712992] [2022-01-28 12:24:53,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567712992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:53,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:53,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:53,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363681559] [2022-01-28 12:24:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:53,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:53,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:53,271 INFO L87 Difference]: Start difference. First operand 4044 states and 8302 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) [2022-01-28 12:24:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:24:57,816 INFO L93 Difference]: Finished difference Result 5124 states and 10512 transitions. [2022-01-28 12:24:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-28 12:24:57,817 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 [2022-01-28 12:24:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:24:57,822 INFO L225 Difference]: With dead ends: 5124 [2022-01-28 12:24:57,822 INFO L226 Difference]: Without dead ends: 5124 [2022-01-28 12:24:57,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1177, Invalid=2983, Unknown=0, NotChecked=0, Total=4160 [2022-01-28 12:24:57,826 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1233 mSDsluCounter, 4826 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:24:57,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 5173 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:24:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2022-01-28 12:24:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 3992. [2022-01-28 12:24:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3989 states have (on average 2.0506392579593884) internal successors, (8180), 3991 states have internal predecessors, (8180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:24:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 8180 transitions. [2022-01-28 12:24:57,867 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 8180 transitions. Word has length 96 [2022-01-28 12:24:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:24:57,867 INFO L470 AbstractCegarLoop]: Abstraction has 3992 states and 8180 transitions. [2022-01-28 12:24:57,867 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) [2022-01-28 12:24:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 8180 transitions. [2022-01-28 12:24:57,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:24:57,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:24:57,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:24:57,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-28 12:24:57,871 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)] === [2022-01-28 12:24:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:24:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash 518902163, now seen corresponding path program 18 times [2022-01-28 12:24:57,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:24:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913667508] [2022-01-28 12:24:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:24:57,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:24:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:24:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:24:58,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:24:58,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913667508] [2022-01-28 12:24:58,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913667508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:24:58,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:24:58,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:24:58,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57460872] [2022-01-28 12:24:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:24:58,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:24:58,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:24:58,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:24:58,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:24:58,508 INFO L87 Difference]: Start difference. First operand 3992 states and 8180 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) [2022-01-28 12:25:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:01,529 INFO L93 Difference]: Finished difference Result 5184 states and 10627 transitions. [2022-01-28 12:25:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-28 12:25:01,529 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 [2022-01-28 12:25:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:01,535 INFO L225 Difference]: With dead ends: 5184 [2022-01-28 12:25:01,535 INFO L226 Difference]: Without dead ends: 5184 [2022-01-28 12:25:01,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=841, Invalid=2941, Unknown=0, NotChecked=0, Total=3782 [2022-01-28 12:25:01,536 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1192 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:01,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 4993 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:25:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2022-01-28 12:25:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4010. [2022-01-28 12:25:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4007 states have (on average 2.0504117793860743) internal successors, (8216), 4009 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 8216 transitions. [2022-01-28 12:25:01,585 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 8216 transitions. Word has length 96 [2022-01-28 12:25:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:01,585 INFO L470 AbstractCegarLoop]: Abstraction has 4010 states and 8216 transitions. [2022-01-28 12:25:01,586 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) [2022-01-28 12:25:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 8216 transitions. [2022-01-28 12:25:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:01,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:01,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:01,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-28 12:25:01,590 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)] === [2022-01-28 12:25:01,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2006772525, now seen corresponding path program 19 times [2022-01-28 12:25:01,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:01,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620688229] [2022-01-28 12:25:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:01,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:02,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:02,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620688229] [2022-01-28 12:25:02,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620688229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:02,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:02,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:02,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890939416] [2022-01-28 12:25:02,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:02,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:02,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:02,221 INFO L87 Difference]: Start difference. First operand 4010 states and 8216 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) [2022-01-28 12:25:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:07,387 INFO L93 Difference]: Finished difference Result 5069 states and 10394 transitions. [2022-01-28 12:25:07,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 12:25:07,387 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 [2022-01-28 12:25:07,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:07,393 INFO L225 Difference]: With dead ends: 5069 [2022-01-28 12:25:07,393 INFO L226 Difference]: Without dead ends: 5069 [2022-01-28 12:25:07,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1207, Invalid=3083, Unknown=0, NotChecked=0, Total=4290 [2022-01-28 12:25:07,395 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1167 mSDsluCounter, 4290 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 4640 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:07,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 4640 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 12:25:07,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2022-01-28 12:25:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 4193. [2022-01-28 12:25:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 4190 states have (on average 2.051073985680191) internal successors, (8594), 4192 states have internal predecessors, (8594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 8594 transitions. [2022-01-28 12:25:07,445 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 8594 transitions. Word has length 96 [2022-01-28 12:25:07,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:07,446 INFO L470 AbstractCegarLoop]: Abstraction has 4193 states and 8594 transitions. [2022-01-28 12:25:07,446 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) [2022-01-28 12:25:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 8594 transitions. [2022-01-28 12:25:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:07,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:07,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:07,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-28 12:25:07,450 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)] === [2022-01-28 12:25:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash -570917011, now seen corresponding path program 20 times [2022-01-28 12:25:07,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:07,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347263882] [2022-01-28 12:25:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:07,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:08,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347263882] [2022-01-28 12:25:08,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347263882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:08,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:08,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:08,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217867811] [2022-01-28 12:25:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:08,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:08,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:08,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:08,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:08,071 INFO L87 Difference]: Start difference. First operand 4193 states and 8594 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) [2022-01-28 12:25:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:19,769 INFO L93 Difference]: Finished difference Result 5800 states and 11887 transitions. [2022-01-28 12:25:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-28 12:25:19,769 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 [2022-01-28 12:25:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:19,774 INFO L225 Difference]: With dead ends: 5800 [2022-01-28 12:25:19,774 INFO L226 Difference]: Without dead ends: 5800 [2022-01-28 12:25:19,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3768, Invalid=9342, Unknown=0, NotChecked=0, Total=13110 [2022-01-28 12:25:19,787 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 1378 mSDsluCounter, 5388 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 5852 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:19,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 5852 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3043 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:25:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2022-01-28 12:25:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 4010. [2022-01-28 12:25:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4007 states have (on average 2.0504117793860743) internal successors, (8216), 4009 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 8216 transitions. [2022-01-28 12:25:19,850 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 8216 transitions. Word has length 96 [2022-01-28 12:25:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:19,850 INFO L470 AbstractCegarLoop]: Abstraction has 4010 states and 8216 transitions. [2022-01-28 12:25:19,850 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) [2022-01-28 12:25:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 8216 transitions. [2022-01-28 12:25:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:19,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:19,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:19,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-28 12:25:19,862 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)] === [2022-01-28 12:25:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2037360013, now seen corresponding path program 21 times [2022-01-28 12:25:19,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:19,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665889971] [2022-01-28 12:25:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:19,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:20,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:20,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665889971] [2022-01-28 12:25:20,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665889971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:20,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:20,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:20,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328837947] [2022-01-28 12:25:20,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:20,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:20,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:20,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:20,303 INFO L87 Difference]: Start difference. First operand 4010 states and 8216 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) [2022-01-28 12:25:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:29,056 INFO L93 Difference]: Finished difference Result 5386 states and 11023 transitions. [2022-01-28 12:25:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-28 12:25:29,056 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 [2022-01-28 12:25:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:29,062 INFO L225 Difference]: With dead ends: 5386 [2022-01-28 12:25:29,062 INFO L226 Difference]: Without dead ends: 5386 [2022-01-28 12:25:29,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3366, Invalid=8406, Unknown=0, NotChecked=0, Total=11772 [2022-01-28 12:25:29,064 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1630 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 3857 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:29,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1630 Valid, 3857 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-28 12:25:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2022-01-28 12:25:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 4375. [2022-01-28 12:25:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 4372 states have (on average 2.050548947849954) internal successors, (8965), 4374 states have internal predecessors, (8965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 8965 transitions. [2022-01-28 12:25:29,108 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 8965 transitions. Word has length 96 [2022-01-28 12:25:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:29,108 INFO L470 AbstractCegarLoop]: Abstraction has 4375 states and 8965 transitions. [2022-01-28 12:25:29,127 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) [2022-01-28 12:25:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 8965 transitions. [2022-01-28 12:25:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:29,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:29,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:29,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-28 12:25:29,132 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)] === [2022-01-28 12:25:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash 155436657, now seen corresponding path program 22 times [2022-01-28 12:25:29,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:29,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577995500] [2022-01-28 12:25:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:29,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:29,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:29,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577995500] [2022-01-28 12:25:29,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577995500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:29,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:29,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:29,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245483346] [2022-01-28 12:25:29,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:29,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:29,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:29,736 INFO L87 Difference]: Start difference. First operand 4375 states and 8965 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) [2022-01-28 12:25:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:35,948 INFO L93 Difference]: Finished difference Result 5494 states and 11300 transitions. [2022-01-28 12:25:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:25:35,948 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 [2022-01-28 12:25:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:35,955 INFO L225 Difference]: With dead ends: 5494 [2022-01-28 12:25:35,955 INFO L226 Difference]: Without dead ends: 5494 [2022-01-28 12:25:35,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1451, Invalid=4249, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:25:35,956 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1180 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:35,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 4988 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-28 12:25:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2022-01-28 12:25:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 4599. [2022-01-28 12:25:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4596 states have (on average 2.0576588337684942) internal successors, (9457), 4598 states have internal predecessors, (9457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 9457 transitions. [2022-01-28 12:25:36,014 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 9457 transitions. Word has length 96 [2022-01-28 12:25:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:36,014 INFO L470 AbstractCegarLoop]: Abstraction has 4599 states and 9457 transitions. [2022-01-28 12:25:36,014 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) [2022-01-28 12:25:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 9457 transitions. [2022-01-28 12:25:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:36,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:36,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:36,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-28 12:25:36,019 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)] === [2022-01-28 12:25:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 15000381, now seen corresponding path program 23 times [2022-01-28 12:25:36,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:36,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340349027] [2022-01-28 12:25:36,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:36,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:36,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:36,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340349027] [2022-01-28 12:25:36,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340349027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:36,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:36,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:36,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681297339] [2022-01-28 12:25:36,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:36,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:36,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:36,573 INFO L87 Difference]: Start difference. First operand 4599 states and 9457 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) [2022-01-28 12:25:42,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:42,687 INFO L93 Difference]: Finished difference Result 5491 states and 11288 transitions. [2022-01-28 12:25:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-28 12:25:42,689 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 [2022-01-28 12:25:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:42,695 INFO L225 Difference]: With dead ends: 5491 [2022-01-28 12:25:42,695 INFO L226 Difference]: Without dead ends: 5491 [2022-01-28 12:25:42,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1432, Invalid=4118, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:25:42,696 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1324 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 5122 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:42,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 5122 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 12:25:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2022-01-28 12:25:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 4603. [2022-01-28 12:25:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4600 states have (on average 2.0576086956521737) internal successors, (9465), 4602 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 9465 transitions. [2022-01-28 12:25:42,742 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 9465 transitions. Word has length 96 [2022-01-28 12:25:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:42,742 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 9465 transitions. [2022-01-28 12:25:42,742 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) [2022-01-28 12:25:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 9465 transitions. [2022-01-28 12:25:42,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:42,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:42,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:42,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-28 12:25:42,747 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)] === [2022-01-28 12:25:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash -834813809, now seen corresponding path program 24 times [2022-01-28 12:25:42,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:42,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018008154] [2022-01-28 12:25:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:42,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:43,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:43,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018008154] [2022-01-28 12:25:43,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018008154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:43,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:43,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:43,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968003428] [2022-01-28 12:25:43,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:43,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:43,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:43,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:43,258 INFO L87 Difference]: Start difference. First operand 4603 states and 9465 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) [2022-01-28 12:25:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:50,002 INFO L93 Difference]: Finished difference Result 5480 states and 11265 transitions. [2022-01-28 12:25:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-28 12:25:50,003 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 [2022-01-28 12:25:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:50,011 INFO L225 Difference]: With dead ends: 5480 [2022-01-28 12:25:50,011 INFO L226 Difference]: Without dead ends: 5480 [2022-01-28 12:25:50,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1534, Invalid=4472, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:25:50,012 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1474 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 4789 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:50,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 4789 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 12:25:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2022-01-28 12:25:50,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 4604. [2022-01-28 12:25:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4601 states have (on average 2.0575961747446208) internal successors, (9467), 4603 states have internal predecessors, (9467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 9467 transitions. [2022-01-28 12:25:50,068 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 9467 transitions. Word has length 96 [2022-01-28 12:25:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:50,068 INFO L470 AbstractCegarLoop]: Abstraction has 4604 states and 9467 transitions. [2022-01-28 12:25:50,068 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) [2022-01-28 12:25:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 9467 transitions. [2022-01-28 12:25:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:50,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:50,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:50,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-28 12:25:50,074 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)] === [2022-01-28 12:25:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 934478799, now seen corresponding path program 25 times [2022-01-28 12:25:50,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:50,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438860412] [2022-01-28 12:25:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:50,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:50,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:50,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438860412] [2022-01-28 12:25:50,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438860412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:50,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:50,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:50,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443349813] [2022-01-28 12:25:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:50,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:50,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:50,766 INFO L87 Difference]: Start difference. First operand 4604 states and 9467 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) [2022-01-28 12:25:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:25:56,931 INFO L93 Difference]: Finished difference Result 5485 states and 11275 transitions. [2022-01-28 12:25:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:25:56,931 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 [2022-01-28 12:25:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:25:56,938 INFO L225 Difference]: With dead ends: 5485 [2022-01-28 12:25:56,938 INFO L226 Difference]: Without dead ends: 5485 [2022-01-28 12:25:56,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1384, Invalid=3446, Unknown=0, NotChecked=0, Total=4830 [2022-01-28 12:25:56,939 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1571 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:25:56,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 3790 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:25:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2022-01-28 12:25:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 4607. [2022-01-28 12:25:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 4604 states have (on average 2.05755864465682) internal successors, (9473), 4606 states have internal predecessors, (9473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:25:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 9473 transitions. [2022-01-28 12:25:57,018 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 9473 transitions. Word has length 96 [2022-01-28 12:25:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:25:57,018 INFO L470 AbstractCegarLoop]: Abstraction has 4607 states and 9473 transitions. [2022-01-28 12:25:57,018 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) [2022-01-28 12:25:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 9473 transitions. [2022-01-28 12:25:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:25:57,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:25:57,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:25:57,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-28 12:25:57,023 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)] === [2022-01-28 12:25:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:25:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1435009355, now seen corresponding path program 26 times [2022-01-28 12:25:57,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:25:57,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857819447] [2022-01-28 12:25:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:25:57,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:25:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:25:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:25:57,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:25:57,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857819447] [2022-01-28 12:25:57,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857819447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:25:57,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:25:57,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:25:57,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98157554] [2022-01-28 12:25:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:25:57,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:25:57,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:25:57,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:25:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:25:57,577 INFO L87 Difference]: Start difference. First operand 4607 states and 9473 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) [2022-01-28 12:26:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:02,056 INFO L93 Difference]: Finished difference Result 5403 states and 11097 transitions. [2022-01-28 12:26:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:26:02,056 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 [2022-01-28 12:26:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:02,061 INFO L225 Difference]: With dead ends: 5403 [2022-01-28 12:26:02,062 INFO L226 Difference]: Without dead ends: 5403 [2022-01-28 12:26:02,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2022-01-28 12:26:02,062 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1157 mSDsluCounter, 4387 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 4732 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:02,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 4732 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:26:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2022-01-28 12:26:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 4659. [2022-01-28 12:26:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 4656 states have (on average 2.056701030927835) internal successors, (9576), 4658 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 9576 transitions. [2022-01-28 12:26:02,111 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 9576 transitions. Word has length 96 [2022-01-28 12:26:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:02,112 INFO L470 AbstractCegarLoop]: Abstraction has 4659 states and 9576 transitions. [2022-01-28 12:26:02,112 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) [2022-01-28 12:26:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 9576 transitions. [2022-01-28 12:26:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:26:02,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:02,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:26:02,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-28 12:26:02,116 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)] === [2022-01-28 12:26:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2010143751, now seen corresponding path program 27 times [2022-01-28 12:26:02,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:02,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868030593] [2022-01-28 12:26:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:02,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:02,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:02,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868030593] [2022-01-28 12:26:02,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868030593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:02,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:02,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:26:02,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829743498] [2022-01-28 12:26:02,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:02,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:26:02,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:02,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:26:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:26:02,515 INFO L87 Difference]: Start difference. First operand 4659 states and 9576 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) [2022-01-28 12:26:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:06,476 INFO L93 Difference]: Finished difference Result 5423 states and 11136 transitions. [2022-01-28 12:26:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:26:06,476 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 [2022-01-28 12:26:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:06,483 INFO L225 Difference]: With dead ends: 5423 [2022-01-28 12:26:06,483 INFO L226 Difference]: Without dead ends: 5423 [2022-01-28 12:26:06,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1325, Invalid=3931, Unknown=0, NotChecked=0, Total=5256 [2022-01-28 12:26:06,485 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1237 mSDsluCounter, 4842 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:06,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 5178 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:26:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2022-01-28 12:26:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4660. [2022-01-28 12:26:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4660 states, 4657 states have (on average 2.0566888554863647) internal successors, (9578), 4659 states have internal predecessors, (9578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4660 states to 4660 states and 9578 transitions. [2022-01-28 12:26:06,534 INFO L78 Accepts]: Start accepts. Automaton has 4660 states and 9578 transitions. Word has length 96 [2022-01-28 12:26:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:06,535 INFO L470 AbstractCegarLoop]: Abstraction has 4660 states and 9578 transitions. [2022-01-28 12:26:06,535 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) [2022-01-28 12:26:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4660 states and 9578 transitions. [2022-01-28 12:26:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:26:06,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:06,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:26:06,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-28 12:26:06,541 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)] === [2022-01-28 12:26:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -515530937, now seen corresponding path program 28 times [2022-01-28 12:26:06,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:06,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270849835] [2022-01-28 12:26:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:06,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:07,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:07,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270849835] [2022-01-28 12:26:07,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270849835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:07,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:07,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:26:07,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95555309] [2022-01-28 12:26:07,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:07,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:26:07,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:26:07,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:26:07,133 INFO L87 Difference]: Start difference. First operand 4660 states and 9578 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) [2022-01-28 12:26:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:11,273 INFO L93 Difference]: Finished difference Result 5386 states and 11061 transitions. [2022-01-28 12:26:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-28 12:26:11,274 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 [2022-01-28 12:26:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:11,280 INFO L225 Difference]: With dead ends: 5386 [2022-01-28 12:26:11,280 INFO L226 Difference]: Without dead ends: 5386 [2022-01-28 12:26:11,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1176, Invalid=2984, Unknown=0, NotChecked=0, Total=4160 [2022-01-28 12:26:11,281 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1222 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:11,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 5116 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-28 12:26:11,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2022-01-28 12:26:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 4742. [2022-01-28 12:26:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4739 states have (on average 2.0582401350495885) internal successors, (9754), 4741 states have internal predecessors, (9754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 9754 transitions. [2022-01-28 12:26:11,332 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 9754 transitions. Word has length 96 [2022-01-28 12:26:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:11,333 INFO L470 AbstractCegarLoop]: Abstraction has 4742 states and 9754 transitions. [2022-01-28 12:26:11,333 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) [2022-01-28 12:26:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 9754 transitions. [2022-01-28 12:26:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:26:11,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:11,337 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] [2022-01-28 12:26:11,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-28 12:26:11,337 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)] === [2022-01-28 12:26:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1083035275, now seen corresponding path program 29 times [2022-01-28 12:26:11,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:11,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618366412] [2022-01-28 12:26:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:11,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:11,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:11,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618366412] [2022-01-28 12:26:11,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618366412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:11,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:11,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:26:11,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831741577] [2022-01-28 12:26:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:11,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:26:11,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:26:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:26:11,796 INFO L87 Difference]: Start difference. First operand 4742 states and 9754 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) [2022-01-28 12:26:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:14,405 INFO L93 Difference]: Finished difference Result 5464 states and 11218 transitions. [2022-01-28 12:26:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-28 12:26:14,405 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 [2022-01-28 12:26:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:14,412 INFO L225 Difference]: With dead ends: 5464 [2022-01-28 12:26:14,412 INFO L226 Difference]: Without dead ends: 5464 [2022-01-28 12:26:14,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=840, Invalid=2942, Unknown=0, NotChecked=0, Total=3782 [2022-01-28 12:26:14,413 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 1222 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 4629 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:14,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 4629 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-28 12:26:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2022-01-28 12:26:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4760. [2022-01-28 12:26:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4757 states have (on average 2.058019760353164) internal successors, (9790), 4759 states have internal predecessors, (9790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 9790 transitions. [2022-01-28 12:26:14,464 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 9790 transitions. Word has length 96 [2022-01-28 12:26:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:14,464 INFO L470 AbstractCegarLoop]: Abstraction has 4760 states and 9790 transitions. [2022-01-28 12:26:14,465 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) [2022-01-28 12:26:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 9790 transitions. [2022-01-28 12:26:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:26:14,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:14,468 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] [2022-01-28 12:26:14,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-28 12:26:14,468 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)] === [2022-01-28 12:26:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:14,469 INFO L85 PathProgramCache]: Analyzing trace with hash 686257333, now seen corresponding path program 30 times [2022-01-28 12:26:14,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:14,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341968499] [2022-01-28 12:26:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:14,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:15,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:15,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341968499] [2022-01-28 12:26:15,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341968499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:15,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:15,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:26:15,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989556210] [2022-01-28 12:26:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:15,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:26:15,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:15,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:26:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:26:15,110 INFO L87 Difference]: Start difference. First operand 4760 states and 9790 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) [2022-01-28 12:26:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:19,414 INFO L93 Difference]: Finished difference Result 5466 states and 11223 transitions. [2022-01-28 12:26:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-28 12:26:19,415 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 [2022-01-28 12:26:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:19,420 INFO L225 Difference]: With dead ends: 5466 [2022-01-28 12:26:19,420 INFO L226 Difference]: Without dead ends: 5466 [2022-01-28 12:26:19,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1202, Invalid=3088, Unknown=0, NotChecked=0, Total=4290 [2022-01-28 12:26:19,421 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1316 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:19,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 4026 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:26:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2022-01-28 12:26:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 4694. [2022-01-28 12:26:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4691 states have (on average 2.0575570240886805) internal successors, (9652), 4693 states have internal predecessors, (9652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 9652 transitions. [2022-01-28 12:26:19,473 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 9652 transitions. Word has length 96 [2022-01-28 12:26:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:19,473 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 9652 transitions. [2022-01-28 12:26:19,473 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) [2022-01-28 12:26:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 9652 transitions. [2022-01-28 12:26:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:26:19,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:19,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:26:19,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-28 12:26:19,477 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)] === [2022-01-28 12:26:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:19,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2122112847, now seen corresponding path program 31 times [2022-01-28 12:26:19,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:19,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3256003] [2022-01-28 12:26:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:19,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:20,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:20,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3256003] [2022-01-28 12:26:20,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3256003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:20,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:20,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-28 12:26:20,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161928873] [2022-01-28 12:26:20,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:20,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-28 12:26:20,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:20,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-28 12:26:20,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-28 12:26:20,087 INFO L87 Difference]: Start difference. First operand 4694 states and 9652 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) [2022-01-28 12:26:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:25,666 INFO L93 Difference]: Finished difference Result 5500 states and 11291 transitions. [2022-01-28 12:26:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-28 12:26:25,667 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 [2022-01-28 12:26:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:25,672 INFO L225 Difference]: With dead ends: 5500 [2022-01-28 12:26:25,672 INFO L226 Difference]: Without dead ends: 5500 [2022-01-28 12:26:25,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1280, Invalid=3142, Unknown=0, NotChecked=0, Total=4422 [2022-01-28 12:26:25,674 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1231 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:25,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 4118 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1793 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-28 12:26:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2022-01-28 12:26:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 4694. [2022-01-28 12:26:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4691 states have (on average 2.0575570240886805) internal successors, (9652), 4693 states have internal predecessors, (9652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 9652 transitions. [2022-01-28 12:26:25,725 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 9652 transitions. Word has length 96 [2022-01-28 12:26:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:25,725 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 9652 transitions. [2022-01-28 12:26:25,725 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) [2022-01-28 12:26:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 9652 transitions. [2022-01-28 12:26:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:26:25,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:25,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:26:25,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-28 12:26:25,729 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)] === [2022-01-28 12:26:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 435422575, now seen corresponding path program 32 times [2022-01-28 12:26:25,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:25,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656868765] [2022-01-28 12:26:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:25,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:26,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:26,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656868765] [2022-01-28 12:26:26,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656868765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:26,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:26,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-28 12:26:26,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364279684] [2022-01-28 12:26:26,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:26,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 12:26:26,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:26,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 12:26:26,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-01-28 12:26:26,279 INFO L87 Difference]: Start difference. First operand 4694 states and 9652 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) [2022-01-28 12:26:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:39,183 INFO L93 Difference]: Finished difference Result 6046 states and 12425 transitions. [2022-01-28 12:26:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-28 12:26:39,183 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 [2022-01-28 12:26:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:39,190 INFO L225 Difference]: With dead ends: 6046 [2022-01-28 12:26:39,190 INFO L226 Difference]: Without dead ends: 6046 [2022-01-28 12:26:39,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2465 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=4244, Invalid=10518, Unknown=0, NotChecked=0, Total=14762 [2022-01-28 12:26:39,191 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 1366 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:39,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 4801 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2665 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:26:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2022-01-28 12:26:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 4694. [2022-01-28 12:26:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4691 states have (on average 2.0575570240886805) internal successors, (9652), 4693 states have internal predecessors, (9652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 9652 transitions. [2022-01-28 12:26:39,241 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 9652 transitions. Word has length 96 [2022-01-28 12:26:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:39,241 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 9652 transitions. [2022-01-28 12:26:39,241 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) [2022-01-28 12:26:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 9652 transitions. [2022-01-28 12:26:39,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-28 12:26:39,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:39,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:26:39,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-28 12:26:39,245 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)] === [2022-01-28 12:26:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1424536301, now seen corresponding path program 33 times [2022-01-28 12:26:39,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:39,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436638821] [2022-01-28 12:26:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:39,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:39,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:39,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436638821] [2022-01-28 12:26:39,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436638821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:39,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:39,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-28 12:26:39,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738184746] [2022-01-28 12:26:39,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:39,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-28 12:26:39,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-28 12:26:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-01-28 12:26:39,744 INFO L87 Difference]: Start difference. First operand 4694 states and 9652 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) [2022-01-28 12:26:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:51,361 INFO L93 Difference]: Finished difference Result 5501 states and 11300 transitions. [2022-01-28 12:26:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-28 12:26:51,363 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 [2022-01-28 12:26:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:51,369 INFO L225 Difference]: With dead ends: 5501 [2022-01-28 12:26:51,369 INFO L226 Difference]: Without dead ends: 5501 [2022-01-28 12:26:51,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3743, Invalid=9367, Unknown=0, NotChecked=0, Total=13110 [2022-01-28 12:26:51,370 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1301 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:51,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1301 Valid, 3989 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-28 12:26:51,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2022-01-28 12:26:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 3151. [2022-01-28 12:26:51,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3151 states, 3148 states have (on average 2.0447903430749683) internal successors, (6437), 3150 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 6437 transitions. [2022-01-28 12:26:51,416 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 6437 transitions. Word has length 96 [2022-01-28 12:26:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:51,416 INFO L470 AbstractCegarLoop]: Abstraction has 3151 states and 6437 transitions. [2022-01-28 12:26:51,416 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) [2022-01-28 12:26:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 6437 transitions. [2022-01-28 12:26:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:26:51,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:51,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:26:51,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-28 12:26:51,419 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)] === [2022-01-28 12:26:51,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1862634563, now seen corresponding path program 1 times [2022-01-28 12:26:51,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327755752] [2022-01-28 12:26:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:51,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:52,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327755752] [2022-01-28 12:26:52,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327755752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:52,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:52,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:26:52,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801591844] [2022-01-28 12:26:52,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:52,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:26:52,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:26:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:26:52,347 INFO L87 Difference]: Start difference. First operand 3151 states and 6437 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) [2022-01-28 12:26:56,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:26:56,976 INFO L93 Difference]: Finished difference Result 5162 states and 10588 transitions. [2022-01-28 12:26:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:26:56,976 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 [2022-01-28 12:26:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:26:56,982 INFO L225 Difference]: With dead ends: 5162 [2022-01-28 12:26:56,982 INFO L226 Difference]: Without dead ends: 5162 [2022-01-28 12:26:56,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:26:56,982 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 1669 mSDsluCounter, 8220 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 8745 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:26:56,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 8745 Invalid, 3145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:26:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2022-01-28 12:26:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 4576. [2022-01-28 12:26:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4573 states have (on average 2.0502952110212114) internal successors, (9376), 4575 states have internal predecessors, (9376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:26:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 9376 transitions. [2022-01-28 12:26:57,027 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 9376 transitions. Word has length 99 [2022-01-28 12:26:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:26:57,027 INFO L470 AbstractCegarLoop]: Abstraction has 4576 states and 9376 transitions. [2022-01-28 12:26:57,028 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) [2022-01-28 12:26:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 9376 transitions. [2022-01-28 12:26:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:26:57,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:26:57,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:26:57,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-28 12:26:57,031 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)] === [2022-01-28 12:26:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:26:57,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1955278075, now seen corresponding path program 2 times [2022-01-28 12:26:57,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:26:57,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398265437] [2022-01-28 12:26:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:26:57,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:26:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:26:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:26:57,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:26:57,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398265437] [2022-01-28 12:26:57,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398265437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:26:57,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:26:57,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:26:57,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375441383] [2022-01-28 12:26:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:26:57,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:26:57,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:26:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:26:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:26:57,805 INFO L87 Difference]: Start difference. First operand 4576 states and 9376 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) [2022-01-28 12:27:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:02,239 INFO L93 Difference]: Finished difference Result 7486 states and 15358 transitions. [2022-01-28 12:27:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:27:02,240 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 [2022-01-28 12:27:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:02,249 INFO L225 Difference]: With dead ends: 7486 [2022-01-28 12:27:02,249 INFO L226 Difference]: Without dead ends: 7486 [2022-01-28 12:27:02,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1052, Invalid=4954, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:27:02,250 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1648 mSDsluCounter, 9579 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 10159 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:02,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 10159 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:27:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2022-01-28 12:27:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 4636. [2022-01-28 12:27:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 4633 states have (on average 2.0500755450032377) internal successors, (9498), 4635 states have internal predecessors, (9498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 9498 transitions. [2022-01-28 12:27:02,316 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 9498 transitions. Word has length 99 [2022-01-28 12:27:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:02,316 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 9498 transitions. [2022-01-28 12:27:02,317 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) [2022-01-28 12:27:02,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 9498 transitions. [2022-01-28 12:27:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:02,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:02,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:02,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-28 12:27:02,321 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)] === [2022-01-28 12:27:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -748108651, now seen corresponding path program 3 times [2022-01-28 12:27:02,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:02,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192343744] [2022-01-28 12:27:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:02,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:02,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:02,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192343744] [2022-01-28 12:27:02,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192343744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:02,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:02,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:27:02,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104829192] [2022-01-28 12:27:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:02,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:27:02,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:27:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:27:02,985 INFO L87 Difference]: Start difference. First operand 4636 states and 9498 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) [2022-01-28 12:27:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:06,969 INFO L93 Difference]: Finished difference Result 6454 states and 13227 transitions. [2022-01-28 12:27:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:06,969 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 [2022-01-28 12:27:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:06,976 INFO L225 Difference]: With dead ends: 6454 [2022-01-28 12:27:06,976 INFO L226 Difference]: Without dead ends: 6454 [2022-01-28 12:27:06,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=941, Invalid=4609, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:27:06,976 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1480 mSDsluCounter, 10411 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 10973 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:06,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 10973 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3972 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:27:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2022-01-28 12:27:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 4636. [2022-01-28 12:27:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 4633 states have (on average 2.0500755450032377) internal successors, (9498), 4635 states have internal predecessors, (9498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 9498 transitions. [2022-01-28 12:27:07,027 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 9498 transitions. Word has length 99 [2022-01-28 12:27:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:07,027 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 9498 transitions. [2022-01-28 12:27:07,027 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) [2022-01-28 12:27:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 9498 transitions. [2022-01-28 12:27:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:07,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:07,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:07,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-28 12:27:07,032 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)] === [2022-01-28 12:27:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:07,032 INFO L85 PathProgramCache]: Analyzing trace with hash 547132675, now seen corresponding path program 4 times [2022-01-28 12:27:07,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:07,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097242771] [2022-01-28 12:27:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:07,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:07,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:07,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097242771] [2022-01-28 12:27:07,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097242771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:07,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:07,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:27:07,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316317679] [2022-01-28 12:27:07,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:07,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:27:07,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:27:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:27:07,979 INFO L87 Difference]: Start difference. First operand 4636 states and 9498 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) [2022-01-28 12:27:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:13,096 INFO L93 Difference]: Finished difference Result 6539 states and 13414 transitions. [2022-01-28 12:27:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:13,097 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 [2022-01-28 12:27:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:13,104 INFO L225 Difference]: With dead ends: 6539 [2022-01-28 12:27:13,104 INFO L226 Difference]: Without dead ends: 6539 [2022-01-28 12:27:13,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:27:13,104 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1803 mSDsluCounter, 9436 mSDsCounter, 0 mSdLazyCounter, 3575 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 9988 SdHoareTripleChecker+Invalid, 3617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:13,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 9988 Invalid, 3617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3575 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:27:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2022-01-28 12:27:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 4653. [2022-01-28 12:27:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4650 states have (on average 2.0498924731182795) internal successors, (9532), 4652 states have internal predecessors, (9532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 9532 transitions. [2022-01-28 12:27:13,151 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 9532 transitions. Word has length 99 [2022-01-28 12:27:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:13,151 INFO L470 AbstractCegarLoop]: Abstraction has 4653 states and 9532 transitions. [2022-01-28 12:27:13,151 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) [2022-01-28 12:27:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 9532 transitions. [2022-01-28 12:27:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:13,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:13,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:13,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-28 12:27:13,155 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)] === [2022-01-28 12:27:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2078168209, now seen corresponding path program 5 times [2022-01-28 12:27:13,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:13,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260846482] [2022-01-28 12:27:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:13,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:14,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:14,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260846482] [2022-01-28 12:27:14,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260846482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:14,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:14,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:27:14,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996018701] [2022-01-28 12:27:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:14,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:27:14,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:27:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:27:14,009 INFO L87 Difference]: Start difference. First operand 4653 states and 9532 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) [2022-01-28 12:27:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:17,470 INFO L93 Difference]: Finished difference Result 6590 states and 13516 transitions. [2022-01-28 12:27:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:17,470 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 [2022-01-28 12:27:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:17,477 INFO L225 Difference]: With dead ends: 6590 [2022-01-28 12:27:17,477 INFO L226 Difference]: Without dead ends: 6590 [2022-01-28 12:27:17,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:27:17,477 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 1557 mSDsluCounter, 9477 mSDsCounter, 0 mSdLazyCounter, 3537 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 10028 SdHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:17,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 10028 Invalid, 3569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:27:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2022-01-28 12:27:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 4687. [2022-01-28 12:27:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4684 states have (on average 2.049530315969257) internal successors, (9600), 4686 states have internal predecessors, (9600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 9600 transitions. [2022-01-28 12:27:17,522 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 9600 transitions. Word has length 99 [2022-01-28 12:27:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:17,522 INFO L470 AbstractCegarLoop]: Abstraction has 4687 states and 9600 transitions. [2022-01-28 12:27:17,522 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) [2022-01-28 12:27:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 9600 transitions. [2022-01-28 12:27:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:17,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:17,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:17,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-28 12:27:17,526 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)] === [2022-01-28 12:27:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -428458567, now seen corresponding path program 6 times [2022-01-28 12:27:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494672162] [2022-01-28 12:27:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:17,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:18,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:18,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494672162] [2022-01-28 12:27:18,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494672162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:18,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:18,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:27:18,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105301341] [2022-01-28 12:27:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:18,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:27:18,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:27:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:27:18,245 INFO L87 Difference]: Start difference. First operand 4687 states and 9600 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) [2022-01-28 12:27:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:22,608 INFO L93 Difference]: Finished difference Result 6675 states and 13686 transitions. [2022-01-28 12:27:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:22,608 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 [2022-01-28 12:27:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:22,615 INFO L225 Difference]: With dead ends: 6675 [2022-01-28 12:27:22,615 INFO L226 Difference]: Without dead ends: 6675 [2022-01-28 12:27:22,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:27:22,616 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1664 mSDsluCounter, 8833 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 9388 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:22,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 9388 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:27:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2022-01-28 12:27:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 4738. [2022-01-28 12:27:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 4735 states have (on average 2.048996832101373) internal successors, (9702), 4737 states have internal predecessors, (9702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 9702 transitions. [2022-01-28 12:27:22,676 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 9702 transitions. Word has length 99 [2022-01-28 12:27:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:22,676 INFO L470 AbstractCegarLoop]: Abstraction has 4738 states and 9702 transitions. [2022-01-28 12:27:22,676 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) [2022-01-28 12:27:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 9702 transitions. [2022-01-28 12:27:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:22,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:22,680 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] [2022-01-28 12:27:22,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-28 12:27:22,680 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)] === [2022-01-28 12:27:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1400360845, now seen corresponding path program 7 times [2022-01-28 12:27:22,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:22,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531246720] [2022-01-28 12:27:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:22,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:23,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531246720] [2022-01-28 12:27:23,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531246720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:23,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:23,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:27:23,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785240252] [2022-01-28 12:27:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:23,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:27:23,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:27:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:27:23,562 INFO L87 Difference]: Start difference. First operand 4738 states and 9702 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) [2022-01-28 12:27:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:27,974 INFO L93 Difference]: Finished difference Result 6743 states and 13822 transitions. [2022-01-28 12:27:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:27,974 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 [2022-01-28 12:27:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:27,982 INFO L225 Difference]: With dead ends: 6743 [2022-01-28 12:27:27,982 INFO L226 Difference]: Without dead ends: 6743 [2022-01-28 12:27:27,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=961, Invalid=4739, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:27:27,983 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1711 mSDsluCounter, 8983 mSDsCounter, 0 mSdLazyCounter, 3442 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 9540 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:27,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 9540 Invalid, 3482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3442 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:27:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6743 states. [2022-01-28 12:27:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6743 to 4755. [2022-01-28 12:27:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4755 states, 4752 states have (on average 2.048821548821549) internal successors, (9736), 4754 states have internal predecessors, (9736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4755 states to 4755 states and 9736 transitions. [2022-01-28 12:27:28,044 INFO L78 Accepts]: Start accepts. Automaton has 4755 states and 9736 transitions. Word has length 99 [2022-01-28 12:27:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:28,044 INFO L470 AbstractCegarLoop]: Abstraction has 4755 states and 9736 transitions. [2022-01-28 12:27:28,045 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) [2022-01-28 12:27:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4755 states and 9736 transitions. [2022-01-28 12:27:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:28,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:28,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:28,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-28 12:27:28,049 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)] === [2022-01-28 12:27:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1762139035, now seen corresponding path program 8 times [2022-01-28 12:27:28,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359331463] [2022-01-28 12:27:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:28,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:28,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:28,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359331463] [2022-01-28 12:27:28,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359331463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:28,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:28,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:27:28,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679443723] [2022-01-28 12:27:28,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:28,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:27:28,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:28,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:27:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:27:28,885 INFO L87 Difference]: Start difference. First operand 4755 states and 9736 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) [2022-01-28 12:27:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:33,813 INFO L93 Difference]: Finished difference Result 6777 states and 13890 transitions. [2022-01-28 12:27:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:33,813 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 [2022-01-28 12:27:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:33,821 INFO L225 Difference]: With dead ends: 6777 [2022-01-28 12:27:33,821 INFO L226 Difference]: Without dead ends: 6777 [2022-01-28 12:27:33,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:27:33,822 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1517 mSDsluCounter, 9340 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 9898 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:33,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 9898 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:27:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2022-01-28 12:27:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 4772. [2022-01-28 12:27:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 4769 states have (on average 2.0486475152023487) internal successors, (9770), 4771 states have internal predecessors, (9770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 9770 transitions. [2022-01-28 12:27:33,883 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 9770 transitions. Word has length 99 [2022-01-28 12:27:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:33,883 INFO L470 AbstractCegarLoop]: Abstraction has 4772 states and 9770 transitions. [2022-01-28 12:27:33,883 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) [2022-01-28 12:27:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 9770 transitions. [2022-01-28 12:27:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:33,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:33,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:33,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-28 12:27:33,887 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)] === [2022-01-28 12:27:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1514557837, now seen corresponding path program 9 times [2022-01-28 12:27:33,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:33,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523435930] [2022-01-28 12:27:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:33,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:34,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:34,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523435930] [2022-01-28 12:27:34,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523435930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:34,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:34,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:27:34,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950769416] [2022-01-28 12:27:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:34,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:27:34,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:34,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:27:34,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:27:34,743 INFO L87 Difference]: Start difference. First operand 4772 states and 9770 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) [2022-01-28 12:27:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:39,665 INFO L93 Difference]: Finished difference Result 6845 states and 14026 transitions. [2022-01-28 12:27:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:39,665 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 [2022-01-28 12:27:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:39,673 INFO L225 Difference]: With dead ends: 6845 [2022-01-28 12:27:39,673 INFO L226 Difference]: Without dead ends: 6845 [2022-01-28 12:27:39,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:27:39,674 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1698 mSDsluCounter, 9387 mSDsCounter, 0 mSdLazyCounter, 3518 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 9947 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:39,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1698 Valid, 9947 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3518 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:27:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2022-01-28 12:27:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 4823. [2022-01-28 12:27:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 4820 states have (on average 2.0481327800829874) internal successors, (9872), 4822 states have internal predecessors, (9872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 9872 transitions. [2022-01-28 12:27:39,742 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 9872 transitions. Word has length 99 [2022-01-28 12:27:39,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:39,743 INFO L470 AbstractCegarLoop]: Abstraction has 4823 states and 9872 transitions. [2022-01-28 12:27:39,743 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) [2022-01-28 12:27:39,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 9872 transitions. [2022-01-28 12:27:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:39,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:39,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:39,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-28 12:27:39,748 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)] === [2022-01-28 12:27:39,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1227029339, now seen corresponding path program 10 times [2022-01-28 12:27:39,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:39,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918388593] [2022-01-28 12:27:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:39,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:40,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:40,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918388593] [2022-01-28 12:27:40,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918388593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:40,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:40,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:27:40,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147372626] [2022-01-28 12:27:40,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:40,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:27:40,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:27:40,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:27:40,663 INFO L87 Difference]: Start difference. First operand 4823 states and 9872 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) [2022-01-28 12:27:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:44,003 INFO L93 Difference]: Finished difference Result 6556 states and 13431 transitions. [2022-01-28 12:27:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:44,003 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 [2022-01-28 12:27:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:44,012 INFO L225 Difference]: With dead ends: 6556 [2022-01-28 12:27:44,012 INFO L226 Difference]: Without dead ends: 6556 [2022-01-28 12:27:44,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:27:44,013 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1785 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 9007 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:44,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 9007 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 12:27:44,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2022-01-28 12:27:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 4823. [2022-01-28 12:27:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 4820 states have (on average 2.0481327800829874) internal successors, (9872), 4822 states have internal predecessors, (9872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 9872 transitions. [2022-01-28 12:27:44,069 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 9872 transitions. Word has length 99 [2022-01-28 12:27:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:44,069 INFO L470 AbstractCegarLoop]: Abstraction has 4823 states and 9872 transitions. [2022-01-28 12:27:44,069 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) [2022-01-28 12:27:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 9872 transitions. [2022-01-28 12:27:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:44,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:44,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:44,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-28 12:27:44,073 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)] === [2022-01-28 12:27:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1850403261, now seen corresponding path program 11 times [2022-01-28 12:27:44,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:44,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286338222] [2022-01-28 12:27:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:44,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:44,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:44,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286338222] [2022-01-28 12:27:44,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286338222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:44,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:44,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:27:44,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324687723] [2022-01-28 12:27:44,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:44,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:27:44,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:27:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:27:44,978 INFO L87 Difference]: Start difference. First operand 4823 states and 9872 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) [2022-01-28 12:27:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:49,838 INFO L93 Difference]: Finished difference Result 6872 states and 14102 transitions. [2022-01-28 12:27:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:27:49,839 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 [2022-01-28 12:27:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:49,846 INFO L225 Difference]: With dead ends: 6872 [2022-01-28 12:27:49,846 INFO L226 Difference]: Without dead ends: 6872 [2022-01-28 12:27:49,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:27:49,847 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1584 mSDsluCounter, 9495 mSDsCounter, 0 mSdLazyCounter, 3549 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 10053 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:49,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 10053 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3549 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:27:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6872 states. [2022-01-28 12:27:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6872 to 4858. [2022-01-28 12:27:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4855 states have (on average 2.048403707518023) internal successors, (9945), 4857 states have internal predecessors, (9945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 9945 transitions. [2022-01-28 12:27:49,898 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 9945 transitions. Word has length 99 [2022-01-28 12:27:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:49,898 INFO L470 AbstractCegarLoop]: Abstraction has 4858 states and 9945 transitions. [2022-01-28 12:27:49,898 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) [2022-01-28 12:27:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 9945 transitions. [2022-01-28 12:27:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:49,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:49,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:27:49,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-28 12:27:49,902 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)] === [2022-01-28 12:27:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:49,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1757759749, now seen corresponding path program 12 times [2022-01-28 12:27:49,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:49,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204587705] [2022-01-28 12:27:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:49,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:50,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204587705] [2022-01-28 12:27:50,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204587705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:50,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:50,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:27:50,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455361059] [2022-01-28 12:27:50,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:50,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:27:50,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:27:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:27:50,740 INFO L87 Difference]: Start difference. First operand 4858 states and 9945 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) [2022-01-28 12:27:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:27:55,097 INFO L93 Difference]: Finished difference Result 8931 states and 18348 transitions. [2022-01-28 12:27:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:27:55,098 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 [2022-01-28 12:27:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:27:55,109 INFO L225 Difference]: With dead ends: 8931 [2022-01-28 12:27:55,109 INFO L226 Difference]: Without dead ends: 8931 [2022-01-28 12:27:55,110 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 [2022-01-28 12:27:55,110 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1867 mSDsluCounter, 10548 mSDsCounter, 0 mSdLazyCounter, 3950 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 11152 SdHoareTripleChecker+Invalid, 3995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:27:55,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1867 Valid, 11152 Invalid, 3995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3950 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:27:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8931 states. [2022-01-28 12:27:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8931 to 4860. [2022-01-28 12:27:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4857 states have (on average 2.0483837759934116) internal successors, (9949), 4859 states have internal predecessors, (9949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:27:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 9949 transitions. [2022-01-28 12:27:55,171 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 9949 transitions. Word has length 99 [2022-01-28 12:27:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:27:55,171 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 9949 transitions. [2022-01-28 12:27:55,172 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) [2022-01-28 12:27:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 9949 transitions. [2022-01-28 12:27:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:27:55,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:27:55,176 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] [2022-01-28 12:27:55,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-28 12:27:55,176 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)] === [2022-01-28 12:27:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:27:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1330038123, now seen corresponding path program 13 times [2022-01-28 12:27:55,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:27:55,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413539159] [2022-01-28 12:27:55,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:27:55,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:27:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:27:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:27:56,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:27:56,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413539159] [2022-01-28 12:27:56,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413539159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:27:56,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:27:56,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:27:56,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049161271] [2022-01-28 12:27:56,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:27:56,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:27:56,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:27:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:27:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:27:56,060 INFO L87 Difference]: Start difference. First operand 4860 states and 9949 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) [2022-01-28 12:28:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:01,071 INFO L93 Difference]: Finished difference Result 6973 states and 14306 transitions. [2022-01-28 12:28:01,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:01,071 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 [2022-01-28 12:28:01,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:01,080 INFO L225 Difference]: With dead ends: 6973 [2022-01-28 12:28:01,080 INFO L226 Difference]: Without dead ends: 6973 [2022-01-28 12:28:01,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=955, Invalid=4745, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:28:01,085 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1685 mSDsluCounter, 10813 mSDsCounter, 0 mSdLazyCounter, 4005 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 11385 SdHoareTripleChecker+Invalid, 4047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:01,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 11385 Invalid, 4047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4005 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:28:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2022-01-28 12:28:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 4842. [2022-01-28 12:28:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4842 states, 4839 states have (on average 2.048150444306675) internal successors, (9911), 4841 states have internal predecessors, (9911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 9911 transitions. [2022-01-28 12:28:01,135 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 9911 transitions. Word has length 99 [2022-01-28 12:28:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:01,135 INFO L470 AbstractCegarLoop]: Abstraction has 4842 states and 9911 transitions. [2022-01-28 12:28:01,135 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) [2022-01-28 12:28:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 9911 transitions. [2022-01-28 12:28:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:01,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:01,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:01,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-28 12:28:01,138 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)] === [2022-01-28 12:28:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash 969706245, now seen corresponding path program 14 times [2022-01-28 12:28:01,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:01,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374582335] [2022-01-28 12:28:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:01,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:01,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:01,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374582335] [2022-01-28 12:28:01,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374582335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:01,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:01,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:01,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653020573] [2022-01-28 12:28:01,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:01,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:01,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:01,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:01,760 INFO L87 Difference]: Start difference. First operand 4842 states and 9911 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) [2022-01-28 12:28:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:07,433 INFO L93 Difference]: Finished difference Result 7878 states and 16150 transitions. [2022-01-28 12:28:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:28:07,434 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 [2022-01-28 12:28:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:07,443 INFO L225 Difference]: With dead ends: 7878 [2022-01-28 12:28:07,443 INFO L226 Difference]: Without dead ends: 7878 [2022-01-28 12:28:07,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1166, Invalid=5314, Unknown=0, NotChecked=0, Total=6480 [2022-01-28 12:28:07,444 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1857 mSDsluCounter, 10611 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 11208 SdHoareTripleChecker+Invalid, 3792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:07,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1857 Valid, 11208 Invalid, 3792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3752 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:28:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2022-01-28 12:28:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 4872. [2022-01-28 12:28:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:28:07,550 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:28:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:07,550 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:28:07,550 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) [2022-01-28 12:28:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:28:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:07,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:07,554 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] [2022-01-28 12:28:07,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-28 12:28:07,554 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)] === [2022-01-28 12:28:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash 948513173, now seen corresponding path program 15 times [2022-01-28 12:28:07,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:07,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198367861] [2022-01-28 12:28:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:07,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:08,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:08,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198367861] [2022-01-28 12:28:08,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198367861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:08,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:08,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:28:08,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003147776] [2022-01-28 12:28:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:08,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:28:08,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:28:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:28:08,401 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-28 12:28:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:13,009 INFO L93 Difference]: Finished difference Result 7785 states and 15957 transitions. [2022-01-28 12:28:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:28:13,009 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 [2022-01-28 12:28:13,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:13,017 INFO L225 Difference]: With dead ends: 7785 [2022-01-28 12:28:13,018 INFO L226 Difference]: Without dead ends: 7785 [2022-01-28 12:28:13,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1060, Invalid=5102, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:28:13,018 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1769 mSDsluCounter, 9737 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 10316 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:13,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 10316 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:28:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2022-01-28 12:28:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 4874. [2022-01-28 12:28:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4871 states have (on average 2.048039416957504) internal successors, (9976), 4873 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-28 12:28:13,074 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-28 12:28:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:13,074 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-28 12:28:13,074 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) [2022-01-28 12:28:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-28 12:28:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:13,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:13,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:13,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-28 12:28:13,078 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)] === [2022-01-28 12:28:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -885464299, now seen corresponding path program 16 times [2022-01-28 12:28:13,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:13,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001793204] [2022-01-28 12:28:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:13,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:13,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:13,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001793204] [2022-01-28 12:28:13,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001793204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:13,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:13,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:28:13,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304212417] [2022-01-28 12:28:13,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:28:13,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:28:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:28:13,707 INFO L87 Difference]: Start difference. First operand 4874 states and 9976 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) [2022-01-28 12:28:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:17,720 INFO L93 Difference]: Finished difference Result 6740 states and 13803 transitions. [2022-01-28 12:28:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:17,720 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 [2022-01-28 12:28:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:17,728 INFO L225 Difference]: With dead ends: 6740 [2022-01-28 12:28:17,728 INFO L226 Difference]: Without dead ends: 6740 [2022-01-28 12:28:17,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=951, Invalid=4749, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:28:17,729 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1616 mSDsluCounter, 8952 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 9507 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:17,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1616 Valid, 9507 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:28:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2022-01-28 12:28:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 4872. [2022-01-28 12:28:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:28:17,780 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:28:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:17,780 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:28:17,780 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) [2022-01-28 12:28:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:28:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:17,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:17,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:17,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-28 12:28:17,784 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)] === [2022-01-28 12:28:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash -917579705, now seen corresponding path program 17 times [2022-01-28 12:28:17,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:17,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219162968] [2022-01-28 12:28:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:17,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:18,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:18,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219162968] [2022-01-28 12:28:18,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219162968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:18,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:18,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:18,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821791815] [2022-01-28 12:28:18,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:18,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:18,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:18,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:18,688 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-28 12:28:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:22,121 INFO L93 Difference]: Finished difference Result 7244 states and 14883 transitions. [2022-01-28 12:28:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:22,121 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 [2022-01-28 12:28:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:22,129 INFO L225 Difference]: With dead ends: 7244 [2022-01-28 12:28:22,129 INFO L226 Difference]: Without dead ends: 7244 [2022-01-28 12:28:22,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:28:22,130 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1679 mSDsluCounter, 9948 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 10511 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:22,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 10511 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:28:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7244 states. [2022-01-28 12:28:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7244 to 4890. [2022-01-28 12:28:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4890 states, 4887 states have (on average 2.04829138530796) internal successors, (10010), 4889 states have internal predecessors, (10010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10010 transitions. [2022-01-28 12:28:22,180 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10010 transitions. Word has length 99 [2022-01-28 12:28:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:22,180 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10010 transitions. [2022-01-28 12:28:22,181 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) [2022-01-28 12:28:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10010 transitions. [2022-01-28 12:28:22,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:22,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:22,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:22,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-28 12:28:22,184 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)] === [2022-01-28 12:28:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1010223217, now seen corresponding path program 18 times [2022-01-28 12:28:22,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:22,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631056600] [2022-01-28 12:28:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:22,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:22,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:22,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631056600] [2022-01-28 12:28:22,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631056600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:22,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:22,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:22,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668488696] [2022-01-28 12:28:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:22,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:22,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:22,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:22,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:22,755 INFO L87 Difference]: Start difference. First operand 4890 states and 10010 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) [2022-01-28 12:28:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:27,021 INFO L93 Difference]: Finished difference Result 9191 states and 18886 transitions. [2022-01-28 12:28:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-28 12:28:27,021 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 [2022-01-28 12:28:27,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:27,032 INFO L225 Difference]: With dead ends: 9191 [2022-01-28 12:28:27,032 INFO L226 Difference]: Without dead ends: 9191 [2022-01-28 12:28:27,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1028, Invalid=4824, Unknown=0, NotChecked=0, Total=5852 [2022-01-28 12:28:27,033 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1624 mSDsluCounter, 10500 mSDsCounter, 0 mSdLazyCounter, 3893 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 11095 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:27,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 11095 Invalid, 3933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3893 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:28:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2022-01-28 12:28:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 4892. [2022-01-28 12:28:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4889 states have (on average 2.048271630190223) internal successors, (10014), 4891 states have internal predecessors, (10014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 10014 transitions. [2022-01-28 12:28:27,112 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 10014 transitions. Word has length 99 [2022-01-28 12:28:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:27,112 INFO L470 AbstractCegarLoop]: Abstraction has 4892 states and 10014 transitions. [2022-01-28 12:28:27,113 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) [2022-01-28 12:28:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 10014 transitions. [2022-01-28 12:28:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:27,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:27,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:27,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-28 12:28:27,117 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)] === [2022-01-28 12:28:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash 196946207, now seen corresponding path program 19 times [2022-01-28 12:28:27,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:27,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878311425] [2022-01-28 12:28:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:27,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:28,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:28,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878311425] [2022-01-28 12:28:28,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878311425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:28,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:28,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:28:28,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053430953] [2022-01-28 12:28:28,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:28,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:28:28,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:28:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:28:28,004 INFO L87 Difference]: Start difference. First operand 4892 states and 10014 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) [2022-01-28 12:28:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:31,762 INFO L93 Difference]: Finished difference Result 7301 states and 14980 transitions. [2022-01-28 12:28:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:31,763 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 [2022-01-28 12:28:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:31,771 INFO L225 Difference]: With dead ends: 7301 [2022-01-28 12:28:31,771 INFO L226 Difference]: Without dead ends: 7301 [2022-01-28 12:28:31,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=955, Invalid=4745, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:28:31,772 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1876 mSDsluCounter, 9030 mSDsCounter, 0 mSdLazyCounter, 3493 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 9607 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:31,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1876 Valid, 9607 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:28:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2022-01-28 12:28:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 4874. [2022-01-28 12:28:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4871 states have (on average 2.048039416957504) internal successors, (9976), 4873 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-28 12:28:31,842 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-28 12:28:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:31,843 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-28 12:28:31,843 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) [2022-01-28 12:28:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-28 12:28:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:31,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:31,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:31,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-28 12:28:31,846 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)] === [2022-01-28 12:28:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1806797157, now seen corresponding path program 20 times [2022-01-28 12:28:31,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:31,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547919888] [2022-01-28 12:28:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:31,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:32,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:32,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547919888] [2022-01-28 12:28:32,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547919888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:32,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:32,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:32,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594163493] [2022-01-28 12:28:32,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:32,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:32,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:32,682 INFO L87 Difference]: Start difference. First operand 4874 states and 9976 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) [2022-01-28 12:28:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:36,891 INFO L93 Difference]: Finished difference Result 6988 states and 14335 transitions. [2022-01-28 12:28:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:36,891 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 [2022-01-28 12:28:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:36,898 INFO L225 Difference]: With dead ends: 6988 [2022-01-28 12:28:36,898 INFO L226 Difference]: Without dead ends: 6988 [2022-01-28 12:28:36,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:28:36,902 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1580 mSDsluCounter, 8612 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 9173 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:36,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 9173 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:28:36,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6988 states. [2022-01-28 12:28:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6988 to 4872. [2022-01-28 12:28:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:28:36,950 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:28:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:36,951 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:28:36,951 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) [2022-01-28 12:28:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:28:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:36,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:36,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:36,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-28 12:28:36,962 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)] === [2022-01-28 12:28:36,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:36,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1671774703, now seen corresponding path program 21 times [2022-01-28 12:28:36,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:36,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635789494] [2022-01-28 12:28:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:36,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:37,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:37,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635789494] [2022-01-28 12:28:37,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635789494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:37,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:37,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:37,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175947174] [2022-01-28 12:28:37,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:37,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:37,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:37,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:37,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:37,720 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-28 12:28:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:41,625 INFO L93 Difference]: Finished difference Result 7301 states and 14997 transitions. [2022-01-28 12:28:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:41,625 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 [2022-01-28 12:28:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:41,633 INFO L225 Difference]: With dead ends: 7301 [2022-01-28 12:28:41,633 INFO L226 Difference]: Without dead ends: 7301 [2022-01-28 12:28:41,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:28:41,634 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1640 mSDsluCounter, 9957 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 10520 SdHoareTripleChecker+Invalid, 3977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:41,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 10520 Invalid, 3977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:28:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2022-01-28 12:28:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 4894. [2022-01-28 12:28:41,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4894 states, 4891 states have (on average 2.0482518912287877) internal successors, (10018), 4893 states have internal predecessors, (10018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:41,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4894 states to 4894 states and 10018 transitions. [2022-01-28 12:28:41,688 INFO L78 Accepts]: Start accepts. Automaton has 4894 states and 10018 transitions. Word has length 99 [2022-01-28 12:28:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:41,688 INFO L470 AbstractCegarLoop]: Abstraction has 4894 states and 10018 transitions. [2022-01-28 12:28:41,688 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) [2022-01-28 12:28:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4894 states and 10018 transitions. [2022-01-28 12:28:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:41,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:41,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:41,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-28 12:28:41,693 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)] === [2022-01-28 12:28:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1764418215, now seen corresponding path program 22 times [2022-01-28 12:28:41,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:41,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380669436] [2022-01-28 12:28:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:41,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:42,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:42,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380669436] [2022-01-28 12:28:42,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380669436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:42,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:42,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:42,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773303149] [2022-01-28 12:28:42,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:42,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:42,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:42,222 INFO L87 Difference]: Start difference. First operand 4894 states and 10018 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) [2022-01-28 12:28:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:46,076 INFO L93 Difference]: Finished difference Result 9248 states and 19000 transitions. [2022-01-28 12:28:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:28:46,077 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 [2022-01-28 12:28:46,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:46,085 INFO L225 Difference]: With dead ends: 9248 [2022-01-28 12:28:46,086 INFO L226 Difference]: Without dead ends: 9248 [2022-01-28 12:28:46,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:28:46,086 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1671 mSDsluCounter, 9930 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 10539 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:46,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 10539 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:28:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9248 states. [2022-01-28 12:28:46,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9248 to 4896. [2022-01-28 12:28:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 4893 states have (on average 2.048232168403842) internal successors, (10022), 4895 states have internal predecessors, (10022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 10022 transitions. [2022-01-28 12:28:46,141 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 10022 transitions. Word has length 99 [2022-01-28 12:28:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:46,141 INFO L470 AbstractCegarLoop]: Abstraction has 4896 states and 10022 transitions. [2022-01-28 12:28:46,142 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) [2022-01-28 12:28:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 10022 transitions. [2022-01-28 12:28:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:46,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:46,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:46,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-28 12:28:46,145 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)] === [2022-01-28 12:28:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -557248791, now seen corresponding path program 23 times [2022-01-28 12:28:46,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:46,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995508788] [2022-01-28 12:28:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:46,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:47,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:47,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995508788] [2022-01-28 12:28:47,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995508788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:47,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:47,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:28:47,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336856024] [2022-01-28 12:28:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:47,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:28:47,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:28:47,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:28:47,002 INFO L87 Difference]: Start difference. First operand 4896 states and 10022 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) [2022-01-28 12:28:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:51,417 INFO L93 Difference]: Finished difference Result 7358 states and 15094 transitions. [2022-01-28 12:28:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:51,417 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 [2022-01-28 12:28:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:51,425 INFO L225 Difference]: With dead ends: 7358 [2022-01-28 12:28:51,425 INFO L226 Difference]: Without dead ends: 7358 [2022-01-28 12:28:51,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=955, Invalid=4745, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:28:51,426 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1802 mSDsluCounter, 9506 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 10083 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:51,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 10083 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:28:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2022-01-28 12:28:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4878. [2022-01-28 12:28:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4875 states have (on average 2.048) internal successors, (9984), 4877 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 9984 transitions. [2022-01-28 12:28:51,480 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 9984 transitions. Word has length 99 [2022-01-28 12:28:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:51,480 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 9984 transitions. [2022-01-28 12:28:51,480 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) [2022-01-28 12:28:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 9984 transitions. [2022-01-28 12:28:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:51,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:51,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:51,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-28 12:28:51,485 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)] === [2022-01-28 12:28:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1052602159, now seen corresponding path program 24 times [2022-01-28 12:28:51,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:51,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847850026] [2022-01-28 12:28:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:51,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:52,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:52,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847850026] [2022-01-28 12:28:52,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847850026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:52,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:52,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:52,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624660748] [2022-01-28 12:28:52,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:52,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:52,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:52,200 INFO L87 Difference]: Start difference. First operand 4878 states and 9984 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) [2022-01-28 12:28:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:28:56,998 INFO L93 Difference]: Finished difference Result 7386 states and 15167 transitions. [2022-01-28 12:28:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:28:56,998 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 [2022-01-28 12:28:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:28:57,007 INFO L225 Difference]: With dead ends: 7386 [2022-01-28 12:28:57,007 INFO L226 Difference]: Without dead ends: 7386 [2022-01-28 12:28:57,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:28:57,008 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1550 mSDsluCounter, 9655 mSDsCounter, 0 mSdLazyCounter, 3691 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 10222 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:28:57,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 10222 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3691 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:28:57,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7386 states. [2022-01-28 12:28:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7386 to 4876. [2022-01-28 12:28:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4873 states have (on average 2.0480197003899034) internal successors, (9980), 4875 states have internal predecessors, (9980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:28:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 9980 transitions. [2022-01-28 12:28:57,100 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 9980 transitions. Word has length 99 [2022-01-28 12:28:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:28:57,101 INFO L470 AbstractCegarLoop]: Abstraction has 4876 states and 9980 transitions. [2022-01-28 12:28:57,101 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) [2022-01-28 12:28:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 9980 transitions. [2022-01-28 12:28:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:28:57,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:28:57,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:28:57,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-28 12:28:57,104 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)] === [2022-01-28 12:28:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:28:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1129847727, now seen corresponding path program 25 times [2022-01-28 12:28:57,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:28:57,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398869756] [2022-01-28 12:28:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:28:57,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:28:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:28:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:28:57,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:28:57,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398869756] [2022-01-28 12:28:57,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398869756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:28:57,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:28:57,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:28:57,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900284861] [2022-01-28 12:28:57,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:28:57,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:28:57,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:28:57,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:28:57,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:28:57,919 INFO L87 Difference]: Start difference. First operand 4876 states and 9980 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) [2022-01-28 12:29:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:02,152 INFO L93 Difference]: Finished difference Result 7043 states and 14445 transitions. [2022-01-28 12:29:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:02,152 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 [2022-01-28 12:29:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:02,159 INFO L225 Difference]: With dead ends: 7043 [2022-01-28 12:29:02,159 INFO L226 Difference]: Without dead ends: 7043 [2022-01-28 12:29:02,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:29:02,159 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1532 mSDsluCounter, 9594 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 10154 SdHoareTripleChecker+Invalid, 3807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:02,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 10154 Invalid, 3807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:29:02,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7043 states. [2022-01-28 12:29:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7043 to 4872. [2022-01-28 12:29:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:29:02,205 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:29:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:02,205 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:29:02,205 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) [2022-01-28 12:29:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:29:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:02,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:02,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:02,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-28 12:29:02,209 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)] === [2022-01-28 12:29:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2006338119, now seen corresponding path program 26 times [2022-01-28 12:29:02,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752160893] [2022-01-28 12:29:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:02,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:03,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:03,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752160893] [2022-01-28 12:29:03,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752160893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:03,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:03,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:29:03,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692066518] [2022-01-28 12:29:03,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:03,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:29:03,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:03,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:29:03,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:29:03,037 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-28 12:29:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:06,940 INFO L93 Difference]: Finished difference Result 7396 states and 15187 transitions. [2022-01-28 12:29:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:06,941 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 [2022-01-28 12:29:06,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:06,950 INFO L225 Difference]: With dead ends: 7396 [2022-01-28 12:29:06,950 INFO L226 Difference]: Without dead ends: 7396 [2022-01-28 12:29:06,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:29:06,951 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1655 mSDsluCounter, 8683 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 9251 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:06,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1655 Valid, 9251 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:29:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2022-01-28 12:29:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 4900. [2022-01-28 12:29:07,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4900 states, 4897 states have (on average 2.0481927710843375) internal successors, (10030), 4899 states have internal predecessors, (10030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4900 states to 4900 states and 10030 transitions. [2022-01-28 12:29:07,014 INFO L78 Accepts]: Start accepts. Automaton has 4900 states and 10030 transitions. Word has length 99 [2022-01-28 12:29:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:07,014 INFO L470 AbstractCegarLoop]: Abstraction has 4900 states and 10030 transitions. [2022-01-28 12:29:07,014 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) [2022-01-28 12:29:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4900 states and 10030 transitions. [2022-01-28 12:29:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:07,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:07,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:07,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-28 12:29:07,018 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)] === [2022-01-28 12:29:07,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2098981631, now seen corresponding path program 27 times [2022-01-28 12:29:07,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:07,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776782170] [2022-01-28 12:29:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:07,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:07,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:07,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776782170] [2022-01-28 12:29:07,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776782170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:07,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:07,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:29:07,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17262998] [2022-01-28 12:29:07,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:07,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:29:07,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:29:07,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:29:07,657 INFO L87 Difference]: Start difference. First operand 4900 states and 10030 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) [2022-01-28 12:29:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:11,567 INFO L93 Difference]: Finished difference Result 9343 states and 19190 transitions. [2022-01-28 12:29:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:29:11,567 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 [2022-01-28 12:29:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:11,577 INFO L225 Difference]: With dead ends: 9343 [2022-01-28 12:29:11,577 INFO L226 Difference]: Without dead ends: 9343 [2022-01-28 12:29:11,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:29:11,578 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1606 mSDsluCounter, 11036 mSDsCounter, 0 mSdLazyCounter, 4046 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 11650 SdHoareTripleChecker+Invalid, 4081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 4046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:11,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 11650 Invalid, 4081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 4046 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:29:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9343 states. [2022-01-28 12:29:11,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9343 to 4902. [2022-01-28 12:29:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4899 states have (on average 2.0481730965503164) internal successors, (10034), 4901 states have internal predecessors, (10034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 10034 transitions. [2022-01-28 12:29:11,637 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 10034 transitions. Word has length 99 [2022-01-28 12:29:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:11,638 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 10034 transitions. [2022-01-28 12:29:11,638 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) [2022-01-28 12:29:11,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 10034 transitions. [2022-01-28 12:29:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:11,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:11,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:11,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-28 12:29:11,643 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)] === [2022-01-28 12:29:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -891812207, now seen corresponding path program 28 times [2022-01-28 12:29:11,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:11,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056709507] [2022-01-28 12:29:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:11,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:12,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:12,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056709507] [2022-01-28 12:29:12,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056709507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:12,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:12,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:29:12,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706915749] [2022-01-28 12:29:12,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:12,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:29:12,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:29:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:29:12,236 INFO L87 Difference]: Start difference. First operand 4902 states and 10034 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) [2022-01-28 12:29:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:16,359 INFO L93 Difference]: Finished difference Result 7453 states and 15284 transitions. [2022-01-28 12:29:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:16,360 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 [2022-01-28 12:29:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:16,367 INFO L225 Difference]: With dead ends: 7453 [2022-01-28 12:29:16,367 INFO L226 Difference]: Without dead ends: 7453 [2022-01-28 12:29:16,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=955, Invalid=4745, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:29:16,368 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1699 mSDsluCounter, 8712 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 9294 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:16,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 9294 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3252 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:29:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2022-01-28 12:29:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 4884. [2022-01-28 12:29:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4881 states have (on average 2.047940995697603) internal successors, (9996), 4883 states have internal predecessors, (9996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 9996 transitions. [2022-01-28 12:29:16,430 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 9996 transitions. Word has length 99 [2022-01-28 12:29:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:16,430 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 9996 transitions. [2022-01-28 12:29:16,430 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) [2022-01-28 12:29:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 9996 transitions. [2022-01-28 12:29:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:16,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:16,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:16,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-28 12:29:16,434 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)] === [2022-01-28 12:29:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash 718038743, now seen corresponding path program 29 times [2022-01-28 12:29:16,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:16,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159411293] [2022-01-28 12:29:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:16,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:17,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:17,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159411293] [2022-01-28 12:29:17,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159411293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:17,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:17,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:29:17,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092893012] [2022-01-28 12:29:17,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:17,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:29:17,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:29:17,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:29:17,575 INFO L87 Difference]: Start difference. First operand 4884 states and 9996 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) [2022-01-28 12:29:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:23,086 INFO L93 Difference]: Finished difference Result 8517 states and 17517 transitions. [2022-01-28 12:29:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:29:23,086 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 [2022-01-28 12:29:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:23,095 INFO L225 Difference]: With dead ends: 8517 [2022-01-28 12:29:23,095 INFO L226 Difference]: Without dead ends: 8517 [2022-01-28 12:29:23,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:29:23,096 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 2021 mSDsluCounter, 10104 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 10680 SdHoareTripleChecker+Invalid, 4174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:23,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2021 Valid, 10680 Invalid, 4174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:29:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2022-01-28 12:29:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 5149. [2022-01-28 12:29:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5146 states have (on average 2.0524679362611735) internal successors, (10562), 5148 states have internal predecessors, (10562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 10562 transitions. [2022-01-28 12:29:23,156 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 10562 transitions. Word has length 99 [2022-01-28 12:29:23,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:23,156 INFO L470 AbstractCegarLoop]: Abstraction has 5149 states and 10562 transitions. [2022-01-28 12:29:23,157 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) [2022-01-28 12:29:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 10562 transitions. [2022-01-28 12:29:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:23,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:23,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:23,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-28 12:29:23,160 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)] === [2022-01-28 12:29:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1820104723, now seen corresponding path program 30 times [2022-01-28 12:29:23,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:23,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592622404] [2022-01-28 12:29:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:23,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:23,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:23,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592622404] [2022-01-28 12:29:23,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592622404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:23,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:23,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:29:23,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597563445] [2022-01-28 12:29:23,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:23,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:29:23,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:29:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:29:23,997 INFO L87 Difference]: Start difference. First operand 5149 states and 10562 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) [2022-01-28 12:29:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:28,395 INFO L93 Difference]: Finished difference Result 8933 states and 18353 transitions. [2022-01-28 12:29:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:28,396 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 [2022-01-28 12:29:28,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:28,405 INFO L225 Difference]: With dead ends: 8933 [2022-01-28 12:29:28,405 INFO L226 Difference]: Without dead ends: 8933 [2022-01-28 12:29:28,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:29:28,406 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1695 mSDsluCounter, 10306 mSDsCounter, 0 mSdLazyCounter, 4100 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 10878 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:28,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1695 Valid, 10878 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4100 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:29:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8933 states. [2022-01-28 12:29:28,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8933 to 4882. [2022-01-28 12:29:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4879 states have (on average 2.047960647673704) internal successors, (9992), 4881 states have internal predecessors, (9992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 9992 transitions. [2022-01-28 12:29:28,465 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 9992 transitions. Word has length 99 [2022-01-28 12:29:28,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:28,465 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 9992 transitions. [2022-01-28 12:29:28,465 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) [2022-01-28 12:29:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 9992 transitions. [2022-01-28 12:29:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:28,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:28,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:28,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-28 12:29:28,469 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)] === [2022-01-28 12:29:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:28,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1464411143, now seen corresponding path program 31 times [2022-01-28 12:29:28,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:28,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718476753] [2022-01-28 12:29:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:28,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:29,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:29,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718476753] [2022-01-28 12:29:29,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718476753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:29,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:29,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:29:29,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605805025] [2022-01-28 12:29:29,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:29,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:29:29,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:29:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:29:29,327 INFO L87 Difference]: Start difference. First operand 4882 states and 9992 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) [2022-01-28 12:29:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:33,729 INFO L93 Difference]: Finished difference Result 7532 states and 15459 transitions. [2022-01-28 12:29:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:33,729 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 [2022-01-28 12:29:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:33,738 INFO L225 Difference]: With dead ends: 7532 [2022-01-28 12:29:33,738 INFO L226 Difference]: Without dead ends: 7532 [2022-01-28 12:29:33,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:29:33,739 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1508 mSDsluCounter, 9866 mSDsCounter, 0 mSdLazyCounter, 3848 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 10437 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:33,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 10437 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3848 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:29:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2022-01-28 12:29:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 4878. [2022-01-28 12:29:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4875 states have (on average 2.048) internal successors, (9984), 4877 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 9984 transitions. [2022-01-28 12:29:33,812 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 9984 transitions. Word has length 99 [2022-01-28 12:29:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:33,812 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 9984 transitions. [2022-01-28 12:29:33,812 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) [2022-01-28 12:29:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 9984 transitions. [2022-01-28 12:29:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:33,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:33,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:33,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-28 12:29:33,816 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)] === [2022-01-28 12:29:33,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 259071161, now seen corresponding path program 32 times [2022-01-28 12:29:33,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:33,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338002281] [2022-01-28 12:29:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:33,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:34,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:34,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338002281] [2022-01-28 12:29:34,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338002281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:34,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:34,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:29:34,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357959200] [2022-01-28 12:29:34,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:34,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:29:34,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:34,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:29:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:29:34,513 INFO L87 Difference]: Start difference. First operand 4878 states and 9984 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) [2022-01-28 12:29:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:38,269 INFO L93 Difference]: Finished difference Result 7134 states and 14627 transitions. [2022-01-28 12:29:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:38,270 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 [2022-01-28 12:29:38,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:38,278 INFO L225 Difference]: With dead ends: 7134 [2022-01-28 12:29:38,278 INFO L226 Difference]: Without dead ends: 7134 [2022-01-28 12:29:38,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:29:38,279 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1605 mSDsluCounter, 9250 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 9816 SdHoareTripleChecker+Invalid, 3662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:38,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 9816 Invalid, 3662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:29:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-01-28 12:29:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 4872. [2022-01-28 12:29:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:29:38,332 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:29:38,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:38,332 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:29:38,332 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) [2022-01-28 12:29:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:29:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:38,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:38,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:38,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-28 12:29:38,336 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)] === [2022-01-28 12:29:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1251499575, now seen corresponding path program 33 times [2022-01-28 12:29:38,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:38,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285744001] [2022-01-28 12:29:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:38,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:39,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:39,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285744001] [2022-01-28 12:29:39,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285744001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:39,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:39,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:29:39,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942291344] [2022-01-28 12:29:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:39,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:29:39,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:39,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:29:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:29:39,106 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-28 12:29:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:42,394 INFO L93 Difference]: Finished difference Result 7472 states and 15339 transitions. [2022-01-28 12:29:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:42,394 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 [2022-01-28 12:29:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:42,402 INFO L225 Difference]: With dead ends: 7472 [2022-01-28 12:29:42,402 INFO L226 Difference]: Without dead ends: 7472 [2022-01-28 12:29:42,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:29:42,427 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1597 mSDsluCounter, 9151 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 9722 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:42,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 9722 Invalid, 3482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3447 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-28 12:29:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2022-01-28 12:29:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 4902. [2022-01-28 12:29:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4899 states have (on average 2.0481730965503164) internal successors, (10034), 4901 states have internal predecessors, (10034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 10034 transitions. [2022-01-28 12:29:42,537 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 10034 transitions. Word has length 99 [2022-01-28 12:29:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:42,537 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 10034 transitions. [2022-01-28 12:29:42,537 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) [2022-01-28 12:29:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 10034 transitions. [2022-01-28 12:29:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:42,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:42,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:42,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-28 12:29:42,540 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)] === [2022-01-28 12:29:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1158856063, now seen corresponding path program 34 times [2022-01-28 12:29:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945795739] [2022-01-28 12:29:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:42,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:43,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:43,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945795739] [2022-01-28 12:29:43,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945795739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:43,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:43,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:29:43,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210975855] [2022-01-28 12:29:43,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:43,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:29:43,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:29:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:29:43,375 INFO L87 Difference]: Start difference. First operand 4902 states and 10034 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) [2022-01-28 12:29:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:48,730 INFO L93 Difference]: Finished difference Result 9419 states and 19342 transitions. [2022-01-28 12:29:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:29:48,730 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 [2022-01-28 12:29:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:48,740 INFO L225 Difference]: With dead ends: 9419 [2022-01-28 12:29:48,740 INFO L226 Difference]: Without dead ends: 9419 [2022-01-28 12:29:48,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:29:48,741 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1711 mSDsluCounter, 10408 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 11025 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:48,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 11025 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:29:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9419 states. [2022-01-28 12:29:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9419 to 4904. [2022-01-28 12:29:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4904 states, 4901 states have (on average 2.0481534380738626) internal successors, (10038), 4903 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 10038 transitions. [2022-01-28 12:29:48,803 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 10038 transitions. Word has length 99 [2022-01-28 12:29:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:48,803 INFO L470 AbstractCegarLoop]: Abstraction has 4904 states and 10038 transitions. [2022-01-28 12:29:48,803 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) [2022-01-28 12:29:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 10038 transitions. [2022-01-28 12:29:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:48,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:48,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:48,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-28 12:29:48,807 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)] === [2022-01-28 12:29:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1928941809, now seen corresponding path program 35 times [2022-01-28 12:29:48,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:48,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231015940] [2022-01-28 12:29:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:48,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:49,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:49,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231015940] [2022-01-28 12:29:49,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231015940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:49,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:49,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:29:49,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150244133] [2022-01-28 12:29:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:49,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:29:49,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:29:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:29:49,695 INFO L87 Difference]: Start difference. First operand 4904 states and 10038 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) [2022-01-28 12:29:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:53,872 INFO L93 Difference]: Finished difference Result 7529 states and 15436 transitions. [2022-01-28 12:29:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:53,873 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 [2022-01-28 12:29:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:53,881 INFO L225 Difference]: With dead ends: 7529 [2022-01-28 12:29:53,881 INFO L226 Difference]: Without dead ends: 7529 [2022-01-28 12:29:53,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=955, Invalid=4745, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:29:53,882 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1674 mSDsluCounter, 9938 mSDsCounter, 0 mSdLazyCounter, 3694 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 10523 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:53,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 10523 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3694 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:29:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2022-01-28 12:29:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 4886. [2022-01-28 12:29:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 4883 states have (on average 2.047921359819783) internal successors, (10000), 4885 states have internal predecessors, (10000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 10000 transitions. [2022-01-28 12:29:53,934 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 10000 transitions. Word has length 99 [2022-01-28 12:29:53,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:53,934 INFO L470 AbstractCegarLoop]: Abstraction has 4886 states and 10000 transitions. [2022-01-28 12:29:53,934 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) [2022-01-28 12:29:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 10000 transitions. [2022-01-28 12:29:53,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:53,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:53,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:53,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-28 12:29:53,938 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)] === [2022-01-28 12:29:53,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:53,939 INFO L85 PathProgramCache]: Analyzing trace with hash -319090859, now seen corresponding path program 36 times [2022-01-28 12:29:53,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:53,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807192138] [2022-01-28 12:29:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:53,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:54,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807192138] [2022-01-28 12:29:54,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807192138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:54,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:54,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:29:54,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933096095] [2022-01-28 12:29:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:54,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:29:54,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:29:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:29:54,682 INFO L87 Difference]: Start difference. First operand 4886 states and 10000 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) [2022-01-28 12:29:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:29:58,249 INFO L93 Difference]: Finished difference Result 7557 states and 15509 transitions. [2022-01-28 12:29:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:29:58,249 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 [2022-01-28 12:29:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:29:58,259 INFO L225 Difference]: With dead ends: 7557 [2022-01-28 12:29:58,259 INFO L226 Difference]: Without dead ends: 7557 [2022-01-28 12:29:58,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:29:58,260 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1494 mSDsluCounter, 10509 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 11084 SdHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:29:58,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 11084 Invalid, 4207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:29:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2022-01-28 12:29:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 4884. [2022-01-28 12:29:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4881 states have (on average 2.047940995697603) internal successors, (9996), 4883 states have internal predecessors, (9996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:29:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 9996 transitions. [2022-01-28 12:29:58,333 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 9996 transitions. Word has length 99 [2022-01-28 12:29:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:29:58,333 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 9996 transitions. [2022-01-28 12:29:58,333 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) [2022-01-28 12:29:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 9996 transitions. [2022-01-28 12:29:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:29:58,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:29:58,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:29:58,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-28 12:29:58,337 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)] === [2022-01-28 12:29:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:29:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1793426551, now seen corresponding path program 37 times [2022-01-28 12:29:58,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:29:58,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188546471] [2022-01-28 12:29:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:29:58,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:29:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:29:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:29:58,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:29:58,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188546471] [2022-01-28 12:29:58,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188546471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:29:58,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:29:58,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:29:58,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971496844] [2022-01-28 12:29:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:29:58,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:29:58,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:29:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:29:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:29:58,960 INFO L87 Difference]: Start difference. First operand 4884 states and 9996 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) [2022-01-28 12:30:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:02,234 INFO L93 Difference]: Finished difference Result 7608 states and 15611 transitions. [2022-01-28 12:30:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:30:02,235 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 [2022-01-28 12:30:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:02,243 INFO L225 Difference]: With dead ends: 7608 [2022-01-28 12:30:02,243 INFO L226 Difference]: Without dead ends: 7608 [2022-01-28 12:30:02,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:30:02,245 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1710 mSDsluCounter, 8767 mSDsCounter, 0 mSdLazyCounter, 3349 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 9341 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:02,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 9341 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3349 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 12:30:02,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7608 states. [2022-01-28 12:30:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7608 to 4880. [2022-01-28 12:30:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4877 states have (on average 2.04798031576789) internal successors, (9988), 4879 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9988 transitions. [2022-01-28 12:30:02,297 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9988 transitions. Word has length 99 [2022-01-28 12:30:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:02,297 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9988 transitions. [2022-01-28 12:30:02,297 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) [2022-01-28 12:30:02,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9988 transitions. [2022-01-28 12:30:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:02,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:02,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:30:02,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-28 12:30:02,301 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)] === [2022-01-28 12:30:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash -778058441, now seen corresponding path program 38 times [2022-01-28 12:30:02,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:02,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555568536] [2022-01-28 12:30:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:02,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:02,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:02,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555568536] [2022-01-28 12:30:02,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555568536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:02,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:02,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:30:02,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609813946] [2022-01-28 12:30:02,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:02,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:30:02,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:02,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:30:02,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:30:02,968 INFO L87 Difference]: Start difference. First operand 4880 states and 9988 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) [2022-01-28 12:30:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:06,393 INFO L93 Difference]: Finished difference Result 7693 states and 15781 transitions. [2022-01-28 12:30:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:30:06,394 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 [2022-01-28 12:30:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:06,402 INFO L225 Difference]: With dead ends: 7693 [2022-01-28 12:30:06,402 INFO L226 Difference]: Without dead ends: 7693 [2022-01-28 12:30:06,403 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 [2022-01-28 12:30:06,403 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1515 mSDsluCounter, 10158 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 10736 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:06,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 10736 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:30:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7693 states. [2022-01-28 12:30:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7693 to 4874. [2022-01-28 12:30:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4871 states have (on average 2.048039416957504) internal successors, (9976), 4873 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-28 12:30:06,459 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-28 12:30:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:06,459 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-28 12:30:06,459 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) [2022-01-28 12:30:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-28 12:30:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:06,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:06,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:30:06,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-28 12:30:06,463 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)] === [2022-01-28 12:30:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2006609387, now seen corresponding path program 39 times [2022-01-28 12:30:06,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:06,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955638235] [2022-01-28 12:30:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:06,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:07,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:07,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955638235] [2022-01-28 12:30:07,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955638235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:07,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:07,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:30:07,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686048582] [2022-01-28 12:30:07,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:07,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:30:07,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:30:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:30:07,317 INFO L87 Difference]: Start difference. First operand 4874 states and 9976 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:13,066 INFO L93 Difference]: Finished difference Result 7877 states and 16157 transitions. [2022-01-28 12:30:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:30:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:30:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:13,077 INFO L225 Difference]: With dead ends: 7877 [2022-01-28 12:30:13,077 INFO L226 Difference]: Without dead ends: 7877 [2022-01-28 12:30:13,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:30:13,078 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1905 mSDsluCounter, 10256 mSDsCounter, 0 mSdLazyCounter, 4116 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 10829 SdHoareTripleChecker+Invalid, 4160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 4116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:13,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 10829 Invalid, 4160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 4116 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-28 12:30:13,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-01-28 12:30:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 5241. [2022-01-28 12:30:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5238 states have (on average 2.051546391752577) internal successors, (10746), 5240 states have internal predecessors, (10746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 10746 transitions. [2022-01-28 12:30:13,159 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 10746 transitions. Word has length 99 [2022-01-28 12:30:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:13,160 INFO L470 AbstractCegarLoop]: Abstraction has 5241 states and 10746 transitions. [2022-01-28 12:30:13,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 10746 transitions. [2022-01-28 12:30:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:13,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:13,164 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] [2022-01-28 12:30:13,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-28 12:30:13,164 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)] === [2022-01-28 12:30:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash -904543407, now seen corresponding path program 40 times [2022-01-28 12:30:13,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:13,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258847897] [2022-01-28 12:30:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:13,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:14,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258847897] [2022-01-28 12:30:14,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258847897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:14,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:14,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:30:14,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283555557] [2022-01-28 12:30:14,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:14,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:30:14,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:30:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:30:14,087 INFO L87 Difference]: Start difference. First operand 5241 states and 10746 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) [2022-01-28 12:30:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:18,728 INFO L93 Difference]: Finished difference Result 8656 states and 17763 transitions. [2022-01-28 12:30:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:30:18,728 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 [2022-01-28 12:30:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:18,737 INFO L225 Difference]: With dead ends: 8656 [2022-01-28 12:30:18,737 INFO L226 Difference]: Without dead ends: 8656 [2022-01-28 12:30:18,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:30:18,738 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1602 mSDsluCounter, 8674 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 9243 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:18,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 9243 Invalid, 3231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:30:18,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2022-01-28 12:30:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 4872. [2022-01-28 12:30:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:30:18,800 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:30:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:18,800 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:30:18,800 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) [2022-01-28 12:30:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:30:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:18,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:18,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:30:18,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-28 12:30:18,804 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)] === [2022-01-28 12:30:18,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1348039269, now seen corresponding path program 41 times [2022-01-28 12:30:18,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:18,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780891001] [2022-01-28 12:30:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:18,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:19,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:19,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780891001] [2022-01-28 12:30:19,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780891001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:19,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:19,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:30:19,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080516325] [2022-01-28 12:30:19,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:19,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:30:19,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:19,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:30:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:30:19,736 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:25,340 INFO L93 Difference]: Finished difference Result 8166 states and 16771 transitions. [2022-01-28 12:30:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:30:25,340 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:30:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:25,350 INFO L225 Difference]: With dead ends: 8166 [2022-01-28 12:30:25,350 INFO L226 Difference]: Without dead ends: 8166 [2022-01-28 12:30:25,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1134, Invalid=5672, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:30:25,351 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1943 mSDsluCounter, 9010 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 9587 SdHoareTripleChecker+Invalid, 3541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:25,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1943 Valid, 9587 Invalid, 3541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:30:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8166 states. [2022-01-28 12:30:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8166 to 5197. [2022-01-28 12:30:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5194 states have (on average 2.055641124374278) internal successors, (10677), 5196 states have internal predecessors, (10677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 10677 transitions. [2022-01-28 12:30:25,424 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 10677 transitions. Word has length 99 [2022-01-28 12:30:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:25,424 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 10677 transitions. [2022-01-28 12:30:25,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 10677 transitions. [2022-01-28 12:30:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:25,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:25,429 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] [2022-01-28 12:30:25,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-28 12:30:25,429 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)] === [2022-01-28 12:30:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1844862047, now seen corresponding path program 42 times [2022-01-28 12:30:25,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:25,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531465399] [2022-01-28 12:30:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:25,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:26,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531465399] [2022-01-28 12:30:26,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531465399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:26,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:26,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:30:26,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705528996] [2022-01-28 12:30:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:26,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:30:26,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:30:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:30:26,574 INFO L87 Difference]: Start difference. First operand 5197 states and 10677 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) [2022-01-28 12:30:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:33,330 INFO L93 Difference]: Finished difference Result 10406 states and 21415 transitions. [2022-01-28 12:30:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:30:33,330 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 [2022-01-28 12:30:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:33,341 INFO L225 Difference]: With dead ends: 10406 [2022-01-28 12:30:33,342 INFO L226 Difference]: Without dead ends: 10406 [2022-01-28 12:30:33,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1414, Invalid=7142, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:30:33,342 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 2165 mSDsluCounter, 10409 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 10990 SdHoareTripleChecker+Invalid, 4180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:33,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2165 Valid, 10990 Invalid, 4180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-28 12:30:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2022-01-28 12:30:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 5094. [2022-01-28 12:30:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5091 states have (on average 2.0506776664702415) internal successors, (10440), 5093 states have internal predecessors, (10440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 10440 transitions. [2022-01-28 12:30:33,405 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 10440 transitions. Word has length 99 [2022-01-28 12:30:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:33,405 INFO L470 AbstractCegarLoop]: Abstraction has 5094 states and 10440 transitions. [2022-01-28 12:30:33,406 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) [2022-01-28 12:30:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 10440 transitions. [2022-01-28 12:30:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:33,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:33,409 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] [2022-01-28 12:30:33,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-28 12:30:33,409 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)] === [2022-01-28 12:30:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -200214303, now seen corresponding path program 43 times [2022-01-28 12:30:33,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:33,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014850463] [2022-01-28 12:30:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:33,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:34,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:34,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014850463] [2022-01-28 12:30:34,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014850463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:34,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:34,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:30:34,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850590214] [2022-01-28 12:30:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:34,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:30:34,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:30:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:30:34,271 INFO L87 Difference]: Start difference. First operand 5094 states and 10440 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) [2022-01-28 12:30:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:37,918 INFO L93 Difference]: Finished difference Result 8890 states and 18258 transitions. [2022-01-28 12:30:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:30:37,918 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 [2022-01-28 12:30:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:37,929 INFO L225 Difference]: With dead ends: 8890 [2022-01-28 12:30:37,930 INFO L226 Difference]: Without dead ends: 8890 [2022-01-28 12:30:37,930 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 [2022-01-28 12:30:37,930 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1590 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 9734 SdHoareTripleChecker+Invalid, 3497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:37,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 9734 Invalid, 3497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:30:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2022-01-28 12:30:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 4904. [2022-01-28 12:30:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4904 states, 4901 states have (on average 2.0481534380738626) internal successors, (10038), 4903 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 10038 transitions. [2022-01-28 12:30:38,018 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 10038 transitions. Word has length 99 [2022-01-28 12:30:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:38,019 INFO L470 AbstractCegarLoop]: Abstraction has 4904 states and 10038 transitions. [2022-01-28 12:30:38,019 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) [2022-01-28 12:30:38,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 10038 transitions. [2022-01-28 12:30:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:38,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:38,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:30:38,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-28 12:30:38,022 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)] === [2022-01-28 12:30:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1255395757, now seen corresponding path program 44 times [2022-01-28 12:30:38,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:38,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707693493] [2022-01-28 12:30:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:38,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:38,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:38,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707693493] [2022-01-28 12:30:38,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707693493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:38,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:38,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:30:38,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992913469] [2022-01-28 12:30:38,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:38,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:30:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:30:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:30:38,549 INFO L87 Difference]: Start difference. First operand 4904 states and 10038 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) [2022-01-28 12:30:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:43,235 INFO L93 Difference]: Finished difference Result 9457 states and 19418 transitions. [2022-01-28 12:30:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:30:43,235 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 [2022-01-28 12:30:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:43,245 INFO L225 Difference]: With dead ends: 9457 [2022-01-28 12:30:43,245 INFO L226 Difference]: Without dead ends: 9457 [2022-01-28 12:30:43,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:30:43,245 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1684 mSDsluCounter, 10151 mSDsCounter, 0 mSdLazyCounter, 3698 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 10770 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:43,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 10770 Invalid, 3736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3698 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:30:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9457 states. [2022-01-28 12:30:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9457 to 4906. [2022-01-28 12:30:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 4903 states have (on average 2.048133795635325) internal successors, (10042), 4905 states have internal predecessors, (10042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 10042 transitions. [2022-01-28 12:30:43,304 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 10042 transitions. Word has length 99 [2022-01-28 12:30:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:43,304 INFO L470 AbstractCegarLoop]: Abstraction has 4906 states and 10042 transitions. [2022-01-28 12:30:43,304 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) [2022-01-28 12:30:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 10042 transitions. [2022-01-28 12:30:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:43,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:43,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:30:43,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-28 12:30:43,307 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)] === [2022-01-28 12:30:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1832402115, now seen corresponding path program 45 times [2022-01-28 12:30:43,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:43,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421284754] [2022-01-28 12:30:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:43,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:44,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:44,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421284754] [2022-01-28 12:30:44,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421284754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:44,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:44,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:30:44,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118640957] [2022-01-28 12:30:44,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:44,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:30:44,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:30:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:30:44,052 INFO L87 Difference]: Start difference. First operand 4906 states and 10042 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) [2022-01-28 12:30:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:48,952 INFO L93 Difference]: Finished difference Result 7567 states and 15512 transitions. [2022-01-28 12:30:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:30:48,952 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 [2022-01-28 12:30:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:48,961 INFO L225 Difference]: With dead ends: 7567 [2022-01-28 12:30:48,961 INFO L226 Difference]: Without dead ends: 7567 [2022-01-28 12:30:48,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:30:48,962 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1619 mSDsluCounter, 10276 mSDsCounter, 0 mSdLazyCounter, 3851 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 10863 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:48,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 10863 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3851 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:30:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2022-01-28 12:30:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 4888. [2022-01-28 12:30:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4885 states have (on average 2.0479017400204707) internal successors, (10004), 4887 states have internal predecessors, (10004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-28 12:30:49,015 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-28 12:30:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:49,015 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-28 12:30:49,015 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) [2022-01-28 12:30:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-28 12:30:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:49,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:49,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:30:49,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-28 12:30:49,019 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)] === [2022-01-28 12:30:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash -222551165, now seen corresponding path program 46 times [2022-01-28 12:30:49,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:49,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693381528] [2022-01-28 12:30:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:49,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:49,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693381528] [2022-01-28 12:30:49,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693381528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:49,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:49,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:30:49,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158201875] [2022-01-28 12:30:49,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:49,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:30:49,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:30:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:30:49,930 INFO L87 Difference]: Start difference. First operand 4888 states and 10004 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) [2022-01-28 12:30:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:30:54,760 INFO L93 Difference]: Finished difference Result 8631 states and 17745 transitions. [2022-01-28 12:30:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:30:54,760 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 [2022-01-28 12:30:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:30:54,769 INFO L225 Difference]: With dead ends: 8631 [2022-01-28 12:30:54,769 INFO L226 Difference]: Without dead ends: 8631 [2022-01-28 12:30:54,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:30:54,770 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 2185 mSDsluCounter, 9398 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 9979 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:30:54,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 9979 Invalid, 3748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:30:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2022-01-28 12:30:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 5153. [2022-01-28 12:30:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5150 states have (on average 2.0524271844660196) internal successors, (10570), 5152 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:30:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 10570 transitions. [2022-01-28 12:30:54,824 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 10570 transitions. Word has length 99 [2022-01-28 12:30:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:30:54,824 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 10570 transitions. [2022-01-28 12:30:54,824 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) [2022-01-28 12:30:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 10570 transitions. [2022-01-28 12:30:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:30:54,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:30:54,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:30:54,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-28 12:30:54,828 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)] === [2022-01-28 12:30:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:30:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash 879514815, now seen corresponding path program 47 times [2022-01-28 12:30:54,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:30:54,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861509716] [2022-01-28 12:30:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:30:54,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:30:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:30:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:30:55,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:30:55,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861509716] [2022-01-28 12:30:55,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861509716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:30:55,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:30:55,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:30:55,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663842747] [2022-01-28 12:30:55,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:30:55,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:30:55,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:30:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:30:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1241, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:30:55,863 INFO L87 Difference]: Start difference. First operand 5153 states and 10570 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) [2022-01-28 12:31:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:02,146 INFO L93 Difference]: Finished difference Result 10596 states and 21802 transitions. [2022-01-28 12:31:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:31:02,146 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 [2022-01-28 12:31:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:02,157 INFO L225 Difference]: With dead ends: 10596 [2022-01-28 12:31:02,157 INFO L226 Difference]: Without dead ends: 10596 [2022-01-28 12:31:02,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1410, Invalid=7146, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:31:02,158 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 2080 mSDsluCounter, 10660 mSDsCounter, 0 mSdLazyCounter, 4596 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 11245 SdHoareTripleChecker+Invalid, 4655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 4596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:02,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2080 Valid, 11245 Invalid, 4655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 4596 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-28 12:31:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10596 states. [2022-01-28 12:31:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10596 to 5191. [2022-01-28 12:31:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5188 states have (on average 2.05165767154973) internal successors, (10644), 5190 states have internal predecessors, (10644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 10644 transitions. [2022-01-28 12:31:02,224 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 10644 transitions. Word has length 99 [2022-01-28 12:31:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:02,224 INFO L470 AbstractCegarLoop]: Abstraction has 5191 states and 10644 transitions. [2022-01-28 12:31:02,224 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) [2022-01-28 12:31:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 10644 transitions. [2022-01-28 12:31:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:02,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:02,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:02,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-28 12:31:02,228 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)] === [2022-01-28 12:31:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1770804737, now seen corresponding path program 48 times [2022-01-28 12:31:02,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83944896] [2022-01-28 12:31:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:02,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:03,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:03,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83944896] [2022-01-28 12:31:03,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83944896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:03,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:03,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:31:03,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971811694] [2022-01-28 12:31:03,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:03,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:31:03,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:03,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:31:03,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:31:03,057 INFO L87 Difference]: Start difference. First operand 5191 states and 10644 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) [2022-01-28 12:31:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:07,045 INFO L93 Difference]: Finished difference Result 9051 states and 18587 transitions. [2022-01-28 12:31:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:31:07,045 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 [2022-01-28 12:31:07,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:07,056 INFO L225 Difference]: With dead ends: 9051 [2022-01-28 12:31:07,057 INFO L226 Difference]: Without dead ends: 9051 [2022-01-28 12:31:07,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:31:07,057 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1785 mSDsluCounter, 9758 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 10335 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:07,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 10335 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:31:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9051 states. [2022-01-28 12:31:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9051 to 4886. [2022-01-28 12:31:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 4883 states have (on average 2.047921359819783) internal successors, (10000), 4885 states have internal predecessors, (10000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 10000 transitions. [2022-01-28 12:31:07,125 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 10000 transitions. Word has length 99 [2022-01-28 12:31:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:07,125 INFO L470 AbstractCegarLoop]: Abstraction has 4886 states and 10000 transitions. [2022-01-28 12:31:07,125 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) [2022-01-28 12:31:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 10000 transitions. [2022-01-28 12:31:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:07,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:07,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:07,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-28 12:31:07,130 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)] === [2022-01-28 12:31:07,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:07,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1889966245, now seen corresponding path program 49 times [2022-01-28 12:31:07,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:07,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051897178] [2022-01-28 12:31:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:07,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:08,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:08,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051897178] [2022-01-28 12:31:08,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051897178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:08,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:08,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:31:08,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808856141] [2022-01-28 12:31:08,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:08,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:31:08,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:31:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:31:08,065 INFO L87 Difference]: Start difference. First operand 4886 states and 10000 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) [2022-01-28 12:31:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:14,507 INFO L93 Difference]: Finished difference Result 8682 states and 17847 transitions. [2022-01-28 12:31:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:31:14,507 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 [2022-01-28 12:31:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:14,517 INFO L225 Difference]: With dead ends: 8682 [2022-01-28 12:31:14,518 INFO L226 Difference]: Without dead ends: 8682 [2022-01-28 12:31:14,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1403, Invalid=7153, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:31:14,518 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 2137 mSDsluCounter, 10543 mSDsCounter, 0 mSdLazyCounter, 4425 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 11123 SdHoareTripleChecker+Invalid, 4477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:14,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2137 Valid, 11123 Invalid, 4477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4425 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:31:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2022-01-28 12:31:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 5185. [2022-01-28 12:31:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5182 states have (on average 2.052103434967194) internal successors, (10634), 5184 states have internal predecessors, (10634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 10634 transitions. [2022-01-28 12:31:14,595 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 10634 transitions. Word has length 99 [2022-01-28 12:31:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:14,595 INFO L470 AbstractCegarLoop]: Abstraction has 5185 states and 10634 transitions. [2022-01-28 12:31:14,595 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) [2022-01-28 12:31:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 10634 transitions. [2022-01-28 12:31:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:14,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:14,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:14,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-28 12:31:14,602 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)] === [2022-01-28 12:31:14,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1302935071, now seen corresponding path program 50 times [2022-01-28 12:31:14,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766572955] [2022-01-28 12:31:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:14,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:15,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:15,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766572955] [2022-01-28 12:31:15,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766572955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:15,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:15,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:31:15,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310677389] [2022-01-28 12:31:15,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:15,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:31:15,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:15,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:31:15,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:31:15,352 INFO L87 Difference]: Start difference. First operand 5185 states and 10634 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) [2022-01-28 12:31:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:18,741 INFO L93 Difference]: Finished difference Result 9098 states and 18683 transitions. [2022-01-28 12:31:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:31:18,741 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 [2022-01-28 12:31:18,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:18,752 INFO L225 Difference]: With dead ends: 9098 [2022-01-28 12:31:18,752 INFO L226 Difference]: Without dead ends: 9098 [2022-01-28 12:31:18,753 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 [2022-01-28 12:31:18,753 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1774 mSDsluCounter, 9478 mSDsCounter, 0 mSdLazyCounter, 3707 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 10054 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:18,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 10054 Invalid, 3744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3707 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:31:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9098 states. [2022-01-28 12:31:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9098 to 4882. [2022-01-28 12:31:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4879 states have (on average 2.047960647673704) internal successors, (9992), 4881 states have internal predecessors, (9992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 9992 transitions. [2022-01-28 12:31:18,845 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 9992 transitions. Word has length 99 [2022-01-28 12:31:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:18,846 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 9992 transitions. [2022-01-28 12:31:18,846 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) [2022-01-28 12:31:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 9992 transitions. [2022-01-28 12:31:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:18,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:18,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:18,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-28 12:31:18,849 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)] === [2022-01-28 12:31:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash -681518747, now seen corresponding path program 51 times [2022-01-28 12:31:18,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:18,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579761655] [2022-01-28 12:31:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:18,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:19,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579761655] [2022-01-28 12:31:19,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579761655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:19,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:19,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:31:19,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365050841] [2022-01-28 12:31:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:19,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:31:19,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:31:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:31:19,884 INFO L87 Difference]: Start difference. First operand 4882 states and 9992 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) [2022-01-28 12:31:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:26,527 INFO L93 Difference]: Finished difference Result 8767 states and 18017 transitions. [2022-01-28 12:31:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:31:26,528 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 [2022-01-28 12:31:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:26,537 INFO L225 Difference]: With dead ends: 8767 [2022-01-28 12:31:26,537 INFO L226 Difference]: Without dead ends: 8767 [2022-01-28 12:31:26,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1404, Invalid=7152, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:31:26,537 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1965 mSDsluCounter, 11438 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 12022 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:26,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1965 Valid, 12022 Invalid, 5002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4954 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-28 12:31:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2022-01-28 12:31:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 5232. [2022-01-28 12:31:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5229 states have (on average 2.0516351118760756) internal successors, (10728), 5231 states have internal predecessors, (10728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 10728 transitions. [2022-01-28 12:31:26,593 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 10728 transitions. Word has length 99 [2022-01-28 12:31:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:26,593 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 10728 transitions. [2022-01-28 12:31:26,593 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) [2022-01-28 12:31:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 10728 transitions. [2022-01-28 12:31:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:26,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:26,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:26,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-28 12:31:26,597 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)] === [2022-01-28 12:31:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash 420547233, now seen corresponding path program 52 times [2022-01-28 12:31:26,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:26,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060178067] [2022-01-28 12:31:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:26,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:27,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:27,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060178067] [2022-01-28 12:31:27,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060178067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:27,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:27,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:31:27,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847423777] [2022-01-28 12:31:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:27,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:31:27,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:31:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:31:27,130 INFO L87 Difference]: Start difference. First operand 5232 states and 10728 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) [2022-01-28 12:31:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:31,035 INFO L93 Difference]: Finished difference Result 9183 states and 18853 transitions. [2022-01-28 12:31:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:31:31,035 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 [2022-01-28 12:31:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:31,045 INFO L225 Difference]: With dead ends: 9183 [2022-01-28 12:31:31,045 INFO L226 Difference]: Without dead ends: 9183 [2022-01-28 12:31:31,045 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 [2022-01-28 12:31:31,045 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1604 mSDsluCounter, 9205 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 9785 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:31,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 9785 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3639 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:31:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9183 states. [2022-01-28 12:31:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9183 to 4876. [2022-01-28 12:31:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4873 states have (on average 2.0480197003899034) internal successors, (9980), 4875 states have internal predecessors, (9980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 9980 transitions. [2022-01-28 12:31:31,101 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 9980 transitions. Word has length 99 [2022-01-28 12:31:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:31,101 INFO L470 AbstractCegarLoop]: Abstraction has 4876 states and 9980 transitions. [2022-01-28 12:31:31,101 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) [2022-01-28 12:31:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 9980 transitions. [2022-01-28 12:31:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:31,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:31,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:31,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-28 12:31:31,105 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)] === [2022-01-28 12:31:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1910069693, now seen corresponding path program 53 times [2022-01-28 12:31:31,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:31,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965847665] [2022-01-28 12:31:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:31,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:32,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:32,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965847665] [2022-01-28 12:31:32,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965847665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:32,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:32,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:31:32,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903126942] [2022-01-28 12:31:32,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:32,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:31:32,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:31:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:31:32,064 INFO L87 Difference]: Start difference. First operand 4876 states and 9980 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:38,009 INFO L93 Difference]: Finished difference Result 8472 states and 17383 transitions. [2022-01-28 12:31:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:31:38,009 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:31:38,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:38,019 INFO L225 Difference]: With dead ends: 8472 [2022-01-28 12:31:38,019 INFO L226 Difference]: Without dead ends: 8472 [2022-01-28 12:31:38,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:31:38,020 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1911 mSDsluCounter, 9818 mSDsCounter, 0 mSdLazyCounter, 4090 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 10404 SdHoareTripleChecker+Invalid, 4136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:38,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 10404 Invalid, 4136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4090 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:31:38,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2022-01-28 12:31:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 5243. [2022-01-28 12:31:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5240 states have (on average 2.051526717557252) internal successors, (10750), 5242 states have internal predecessors, (10750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:38,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 10750 transitions. [2022-01-28 12:31:38,106 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 10750 transitions. Word has length 99 [2022-01-28 12:31:38,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:38,106 INFO L470 AbstractCegarLoop]: Abstraction has 5243 states and 10750 transitions. [2022-01-28 12:31:38,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 10750 transitions. [2022-01-28 12:31:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:38,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:38,110 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, 1, 1, 1] [2022-01-28 12:31:38,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-28 12:31:38,110 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)] === [2022-01-28 12:31:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash -808003713, now seen corresponding path program 54 times [2022-01-28 12:31:38,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:38,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017453905] [2022-01-28 12:31:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:38,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:38,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017453905] [2022-01-28 12:31:38,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017453905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:38,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:38,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:31:38,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459424624] [2022-01-28 12:31:38,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:38,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:31:38,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:31:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:31:38,923 INFO L87 Difference]: Start difference. First operand 5243 states and 10750 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) [2022-01-28 12:31:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:43,971 INFO L93 Difference]: Finished difference Result 9251 states and 18989 transitions. [2022-01-28 12:31:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:31:43,971 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 [2022-01-28 12:31:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:43,981 INFO L225 Difference]: With dead ends: 9251 [2022-01-28 12:31:43,981 INFO L226 Difference]: Without dead ends: 9251 [2022-01-28 12:31:43,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:31:43,982 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1567 mSDsluCounter, 10354 mSDsCounter, 0 mSdLazyCounter, 4061 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 10936 SdHoareTripleChecker+Invalid, 4094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:43,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 10936 Invalid, 4094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4061 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-28 12:31:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9251 states. [2022-01-28 12:31:44,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9251 to 4874. [2022-01-28 12:31:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4871 states have (on average 2.048039416957504) internal successors, (9976), 4873 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 9976 transitions. [2022-01-28 12:31:44,040 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 9976 transitions. Word has length 99 [2022-01-28 12:31:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:44,040 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 9976 transitions. [2022-01-28 12:31:44,040 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) [2022-01-28 12:31:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 9976 transitions. [2022-01-28 12:31:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:44,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:44,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:44,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-28 12:31:44,044 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)] === [2022-01-28 12:31:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1959007845, now seen corresponding path program 55 times [2022-01-28 12:31:44,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956351510] [2022-01-28 12:31:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:44,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:44,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:44,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956351510] [2022-01-28 12:31:44,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956351510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:44,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:44,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:31:44,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561572900] [2022-01-28 12:31:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:44,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:31:44,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:31:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:31:44,827 INFO L87 Difference]: Start difference. First operand 4874 states and 9976 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) [2022-01-28 12:31:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:49,535 INFO L93 Difference]: Finished difference Result 7240 states and 14839 transitions. [2022-01-28 12:31:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:31:49,535 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 [2022-01-28 12:31:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:49,545 INFO L225 Difference]: With dead ends: 7240 [2022-01-28 12:31:49,545 INFO L226 Difference]: Without dead ends: 7240 [2022-01-28 12:31:49,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:31:49,546 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1695 mSDsluCounter, 9069 mSDsCounter, 0 mSdLazyCounter, 3328 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 9639 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:49,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1695 Valid, 9639 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3328 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:31:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-01-28 12:31:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 4872. [2022-01-28 12:31:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:31:49,611 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:31:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:49,612 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:31:49,612 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) [2022-01-28 12:31:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:31:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:49,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:49,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:49,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-28 12:31:49,616 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)] === [2022-01-28 12:31:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1893386159, now seen corresponding path program 56 times [2022-01-28 12:31:49,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:49,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941482200] [2022-01-28 12:31:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:49,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:50,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:50,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941482200] [2022-01-28 12:31:50,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941482200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:50,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:50,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:31:50,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592281391] [2022-01-28 12:31:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:50,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:31:50,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:50,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:31:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:31:50,600 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:31:56,660 INFO L93 Difference]: Finished difference Result 7862 states and 16144 transitions. [2022-01-28 12:31:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:31:56,660 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:31:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:31:56,669 INFO L225 Difference]: With dead ends: 7862 [2022-01-28 12:31:56,669 INFO L226 Difference]: Without dead ends: 7862 [2022-01-28 12:31:56,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1134, Invalid=5672, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:31:56,670 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1877 mSDsluCounter, 10498 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 11078 SdHoareTripleChecker+Invalid, 4174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:31:56,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1877 Valid, 11078 Invalid, 4174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:31:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7862 states. [2022-01-28 12:31:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7862 to 5203. [2022-01-28 12:31:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5200 states have (on average 2.055576923076923) internal successors, (10689), 5202 states have internal predecessors, (10689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 10689 transitions. [2022-01-28 12:31:56,762 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 10689 transitions. Word has length 99 [2022-01-28 12:31:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:31:56,762 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 10689 transitions. [2022-01-28 12:31:56,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:31:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 10689 transitions. [2022-01-28 12:31:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:31:56,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:31:56,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:31:56,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-28 12:31:56,766 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)] === [2022-01-28 12:31:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:31:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -791320179, now seen corresponding path program 57 times [2022-01-28 12:31:56,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:31:56,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667381005] [2022-01-28 12:31:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:31:56,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:31:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:31:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:31:57,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:31:57,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667381005] [2022-01-28 12:31:57,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667381005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:31:57,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:31:57,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:31:57,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687791502] [2022-01-28 12:31:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:31:57,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:31:57,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:31:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:31:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:31:57,592 INFO L87 Difference]: Start difference. First operand 5203 states and 10689 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) [2022-01-28 12:32:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:02,328 INFO L93 Difference]: Finished difference Result 8658 states and 17784 transitions. [2022-01-28 12:32:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:02,329 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 [2022-01-28 12:32:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:02,338 INFO L225 Difference]: With dead ends: 8658 [2022-01-28 12:32:02,338 INFO L226 Difference]: Without dead ends: 8658 [2022-01-28 12:32:02,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:32:02,338 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1621 mSDsluCounter, 9452 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 10028 SdHoareTripleChecker+Invalid, 3486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:02,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 10028 Invalid, 3486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:32:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8658 states. [2022-01-28 12:32:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8658 to 4910. [2022-01-28 12:32:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4910 states, 4907 states have (on average 2.04809455879356) internal successors, (10050), 4909 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 10050 transitions. [2022-01-28 12:32:02,391 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 10050 transitions. Word has length 99 [2022-01-28 12:32:02,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:02,391 INFO L470 AbstractCegarLoop]: Abstraction has 4910 states and 10050 transitions. [2022-01-28 12:32:02,391 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) [2022-01-28 12:32:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 10050 transitions. [2022-01-28 12:32:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:02,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:02,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:02,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-28 12:32:02,395 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)] === [2022-01-28 12:32:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1986029671, now seen corresponding path program 58 times [2022-01-28 12:32:02,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:02,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645203046] [2022-01-28 12:32:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:02,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:03,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:03,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645203046] [2022-01-28 12:32:03,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645203046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:03,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:03,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:32:03,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510912879] [2022-01-28 12:32:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:03,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:32:03,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:32:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:32:03,091 INFO L87 Difference]: Start difference. First operand 4910 states and 10050 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) [2022-01-28 12:32:08,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:08,228 INFO L93 Difference]: Finished difference Result 9153 states and 18791 transitions. [2022-01-28 12:32:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:32:08,228 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 [2022-01-28 12:32:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:08,238 INFO L225 Difference]: With dead ends: 9153 [2022-01-28 12:32:08,238 INFO L226 Difference]: Without dead ends: 9153 [2022-01-28 12:32:08,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:32:08,239 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1634 mSDsluCounter, 10082 mSDsCounter, 0 mSdLazyCounter, 3581 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 10704 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:08,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1634 Valid, 10704 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3581 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:32:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2022-01-28 12:32:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 4912. [2022-01-28 12:32:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4909 states have (on average 2.0480749643511915) internal successors, (10054), 4911 states have internal predecessors, (10054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 10054 transitions. [2022-01-28 12:32:08,295 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 10054 transitions. Word has length 99 [2022-01-28 12:32:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:08,295 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 10054 transitions. [2022-01-28 12:32:08,295 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) [2022-01-28 12:32:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 10054 transitions. [2022-01-28 12:32:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:08,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:08,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:08,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-28 12:32:08,299 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)] === [2022-01-28 12:32:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -778860247, now seen corresponding path program 59 times [2022-01-28 12:32:08,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:08,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38335167] [2022-01-28 12:32:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:08,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:08,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:08,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38335167] [2022-01-28 12:32:08,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38335167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:08,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:08,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:32:08,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353547284] [2022-01-28 12:32:08,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:08,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:32:08,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:08,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:32:08,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:32:08,802 INFO L87 Difference]: Start difference. First operand 4912 states and 10054 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) [2022-01-28 12:32:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:12,219 INFO L93 Difference]: Finished difference Result 7263 states and 14885 transitions. [2022-01-28 12:32:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:12,219 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 [2022-01-28 12:32:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:12,227 INFO L225 Difference]: With dead ends: 7263 [2022-01-28 12:32:12,227 INFO L226 Difference]: Without dead ends: 7263 [2022-01-28 12:32:12,227 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 [2022-01-28 12:32:12,227 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1576 mSDsluCounter, 10467 mSDsCounter, 0 mSdLazyCounter, 4001 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 11057 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:12,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 11057 Invalid, 4034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4001 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:32:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2022-01-28 12:32:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 4894. [2022-01-28 12:32:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4894 states, 4891 states have (on average 2.0478429768963404) internal successors, (10016), 4893 states have internal predecessors, (10016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4894 states to 4894 states and 10016 transitions. [2022-01-28 12:32:12,277 INFO L78 Accepts]: Start accepts. Automaton has 4894 states and 10016 transitions. Word has length 99 [2022-01-28 12:32:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:12,277 INFO L470 AbstractCegarLoop]: Abstraction has 4894 states and 10016 transitions. [2022-01-28 12:32:12,277 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) [2022-01-28 12:32:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4894 states and 10016 transitions. [2022-01-28 12:32:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:12,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:12,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:12,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-28 12:32:12,281 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)] === [2022-01-28 12:32:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash 830990703, now seen corresponding path program 60 times [2022-01-28 12:32:12,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:12,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513700994] [2022-01-28 12:32:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:12,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:12,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:12,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513700994] [2022-01-28 12:32:12,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513700994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:12,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:12,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:32:12,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696561974] [2022-01-28 12:32:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:12,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:32:12,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:12,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:32:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:32:12,816 INFO L87 Difference]: Start difference. First operand 4894 states and 10016 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) [2022-01-28 12:32:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:16,283 INFO L93 Difference]: Finished difference Result 7291 states and 14958 transitions. [2022-01-28 12:32:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:16,283 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 [2022-01-28 12:32:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:16,291 INFO L225 Difference]: With dead ends: 7291 [2022-01-28 12:32:16,291 INFO L226 Difference]: Without dead ends: 7291 [2022-01-28 12:32:16,291 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 [2022-01-28 12:32:16,291 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1482 mSDsluCounter, 10961 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 11541 SdHoareTripleChecker+Invalid, 4304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:16,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 11541 Invalid, 4304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4273 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:32:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2022-01-28 12:32:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 4892. [2022-01-28 12:32:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4889 states have (on average 2.047862548578441) internal successors, (10012), 4891 states have internal predecessors, (10012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 10012 transitions. [2022-01-28 12:32:16,343 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 10012 transitions. Word has length 99 [2022-01-28 12:32:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:16,343 INFO L470 AbstractCegarLoop]: Abstraction has 4892 states and 10012 transitions. [2022-01-28 12:32:16,343 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) [2022-01-28 12:32:16,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 10012 transitions. [2022-01-28 12:32:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:16,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:16,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:16,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-28 12:32:16,347 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)] === [2022-01-28 12:32:16,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1351459183, now seen corresponding path program 61 times [2022-01-28 12:32:16,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:16,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550199648] [2022-01-28 12:32:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:16,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:17,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:17,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550199648] [2022-01-28 12:32:17,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550199648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:17,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:17,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:32:17,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37525322] [2022-01-28 12:32:17,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:17,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:32:17,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:17,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:32:17,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:32:17,045 INFO L87 Difference]: Start difference. First operand 4892 states and 10012 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) [2022-01-28 12:32:21,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:21,330 INFO L93 Difference]: Finished difference Result 7342 states and 15060 transitions. [2022-01-28 12:32:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:21,331 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 [2022-01-28 12:32:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:21,340 INFO L225 Difference]: With dead ends: 7342 [2022-01-28 12:32:21,340 INFO L226 Difference]: Without dead ends: 7342 [2022-01-28 12:32:21,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:32:21,343 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1731 mSDsluCounter, 10216 mSDsCounter, 0 mSdLazyCounter, 3863 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 10795 SdHoareTripleChecker+Invalid, 3904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:21,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1731 Valid, 10795 Invalid, 3904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3863 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:32:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7342 states. [2022-01-28 12:32:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7342 to 4888. [2022-01-28 12:32:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4885 states have (on average 2.0479017400204707) internal successors, (10004), 4887 states have internal predecessors, (10004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-28 12:32:21,403 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-28 12:32:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:21,403 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-28 12:32:21,403 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) [2022-01-28 12:32:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-28 12:32:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:21,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:21,422 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, 1, 1, 1] [2022-01-28 12:32:21,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-28 12:32:21,422 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)] === [2022-01-28 12:32:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:21,423 INFO L85 PathProgramCache]: Analyzing trace with hash 372023121, now seen corresponding path program 62 times [2022-01-28 12:32:21,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:21,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897744503] [2022-01-28 12:32:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:21,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:22,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:22,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897744503] [2022-01-28 12:32:22,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897744503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:22,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:22,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:32:22,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914189958] [2022-01-28 12:32:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:22,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:32:22,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:32:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:32:22,470 INFO L87 Difference]: Start difference. First operand 4888 states and 10004 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:27,478 INFO L93 Difference]: Finished difference Result 8100 states and 16620 transitions. [2022-01-28 12:32:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:32:27,478 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:32:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:27,487 INFO L225 Difference]: With dead ends: 8100 [2022-01-28 12:32:27,487 INFO L226 Difference]: Without dead ends: 8100 [2022-01-28 12:32:27,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:32:27,488 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1721 mSDsluCounter, 11348 mSDsCounter, 0 mSdLazyCounter, 4913 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 11935 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:27,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 11935 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4913 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:32:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2022-01-28 12:32:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 5238. [2022-01-28 12:32:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5235 states have (on average 2.0515759312320916) internal successors, (10740), 5237 states have internal predecessors, (10740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 10740 transitions. [2022-01-28 12:32:27,552 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 10740 transitions. Word has length 99 [2022-01-28 12:32:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:27,552 INFO L470 AbstractCegarLoop]: Abstraction has 5238 states and 10740 transitions. [2022-01-28 12:32:27,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 10740 transitions. [2022-01-28 12:32:27,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:27,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:27,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:27,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-28 12:32:27,557 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)] === [2022-01-28 12:32:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1474089101, now seen corresponding path program 63 times [2022-01-28 12:32:27,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:27,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606618762] [2022-01-28 12:32:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:27,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:28,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606618762] [2022-01-28 12:32:28,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606618762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:28,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:28,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:32:28,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049260891] [2022-01-28 12:32:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:28,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:32:28,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:32:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:32:28,460 INFO L87 Difference]: Start difference. First operand 5238 states and 10740 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) [2022-01-28 12:32:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:32,363 INFO L93 Difference]: Finished difference Result 8879 states and 18226 transitions. [2022-01-28 12:32:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:32,364 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 [2022-01-28 12:32:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:32,374 INFO L225 Difference]: With dead ends: 8879 [2022-01-28 12:32:32,374 INFO L226 Difference]: Without dead ends: 8879 [2022-01-28 12:32:32,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:32:32,375 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1841 mSDsluCounter, 9287 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 9870 SdHoareTripleChecker+Invalid, 3650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:32,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 9870 Invalid, 3650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3605 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:32:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8879 states. [2022-01-28 12:32:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8879 to 4882. [2022-01-28 12:32:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4879 states have (on average 2.047960647673704) internal successors, (9992), 4881 states have internal predecessors, (9992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 9992 transitions. [2022-01-28 12:32:32,435 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 9992 transitions. Word has length 99 [2022-01-28 12:32:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:32,435 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 9992 transitions. [2022-01-28 12:32:32,435 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) [2022-01-28 12:32:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 9992 transitions. [2022-01-28 12:32:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:32,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:32,440 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] [2022-01-28 12:32:32,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-28 12:32:32,441 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)] === [2022-01-28 12:32:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash -856527825, now seen corresponding path program 64 times [2022-01-28 12:32:32,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:32,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463587414] [2022-01-28 12:32:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:32,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:33,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:33,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463587414] [2022-01-28 12:32:33,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463587414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:33,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:33,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:32:33,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769201389] [2022-01-28 12:32:33,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:33,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:32:33,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:32:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:32:33,056 INFO L87 Difference]: Start difference. First operand 4882 states and 9992 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) [2022-01-28 12:32:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:36,541 INFO L93 Difference]: Finished difference Result 7495 states and 15366 transitions. [2022-01-28 12:32:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:36,541 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 [2022-01-28 12:32:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:36,552 INFO L225 Difference]: With dead ends: 7495 [2022-01-28 12:32:36,552 INFO L226 Difference]: Without dead ends: 7495 [2022-01-28 12:32:36,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:32:36,553 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1642 mSDsluCounter, 10319 mSDsCounter, 0 mSdLazyCounter, 3918 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 10904 SdHoareTripleChecker+Invalid, 3958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:36,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 10904 Invalid, 3958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3918 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:32:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2022-01-28 12:32:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 4880. [2022-01-28 12:32:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4877 states have (on average 2.04798031576789) internal successors, (9988), 4879 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9988 transitions. [2022-01-28 12:32:36,637 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9988 transitions. Word has length 99 [2022-01-28 12:32:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:36,637 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9988 transitions. [2022-01-28 12:32:36,637 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) [2022-01-28 12:32:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9988 transitions. [2022-01-28 12:32:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:36,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:36,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:36,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-28 12:32:36,641 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)] === [2022-01-28 12:32:36,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1282417583, now seen corresponding path program 65 times [2022-01-28 12:32:36,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:36,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667788170] [2022-01-28 12:32:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:36,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:37,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667788170] [2022-01-28 12:32:37,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667788170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:37,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:37,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:32:37,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681311855] [2022-01-28 12:32:37,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:37,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:32:37,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:32:37,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:32:37,370 INFO L87 Difference]: Start difference. First operand 4880 states and 9988 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) [2022-01-28 12:32:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:40,608 INFO L93 Difference]: Finished difference Result 7529 states and 15434 transitions. [2022-01-28 12:32:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:40,608 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 [2022-01-28 12:32:40,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:40,616 INFO L225 Difference]: With dead ends: 7529 [2022-01-28 12:32:40,616 INFO L226 Difference]: Without dead ends: 7529 [2022-01-28 12:32:40,616 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 [2022-01-28 12:32:40,616 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1762 mSDsluCounter, 9283 mSDsCounter, 0 mSdLazyCounter, 3473 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 9869 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:40,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1762 Valid, 9869 Invalid, 3515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3473 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-28 12:32:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2022-01-28 12:32:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 4878. [2022-01-28 12:32:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4875 states have (on average 2.048) internal successors, (9984), 4877 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 9984 transitions. [2022-01-28 12:32:40,667 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 9984 transitions. Word has length 99 [2022-01-28 12:32:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:40,667 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 9984 transitions. [2022-01-28 12:32:40,667 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) [2022-01-28 12:32:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 9984 transitions. [2022-01-28 12:32:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:40,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:40,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:40,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-28 12:32:40,671 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)] === [2022-01-28 12:32:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1718301777, now seen corresponding path program 66 times [2022-01-28 12:32:40,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:40,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186377107] [2022-01-28 12:32:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:40,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:41,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186377107] [2022-01-28 12:32:41,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186377107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:41,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:41,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:32:41,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756976134] [2022-01-28 12:32:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:41,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:32:41,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:32:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:32:41,362 INFO L87 Difference]: Start difference. First operand 4878 states and 9984 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:45,220 INFO L93 Difference]: Finished difference Result 7607 states and 15598 transitions. [2022-01-28 12:32:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:32:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:32:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:45,229 INFO L225 Difference]: With dead ends: 7607 [2022-01-28 12:32:45,229 INFO L226 Difference]: Without dead ends: 7607 [2022-01-28 12:32:45,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1130, Invalid=5676, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:32:45,229 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 2013 mSDsluCounter, 9369 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 9947 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:45,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 9947 Invalid, 3744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3695 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:32:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2022-01-28 12:32:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 5313. [2022-01-28 12:32:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 5310 states have (on average 2.0508474576271185) internal successors, (10890), 5312 states have internal predecessors, (10890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 10890 transitions. [2022-01-28 12:32:45,286 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 10890 transitions. Word has length 99 [2022-01-28 12:32:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:45,286 INFO L470 AbstractCegarLoop]: Abstraction has 5313 states and 10890 transitions. [2022-01-28 12:32:45,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 10890 transitions. [2022-01-28 12:32:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:45,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:45,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:45,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-28 12:32:45,290 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)] === [2022-01-28 12:32:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash -616235797, now seen corresponding path program 67 times [2022-01-28 12:32:45,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:45,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758179753] [2022-01-28 12:32:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:45,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:45,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:45,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758179753] [2022-01-28 12:32:45,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758179753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:45,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:45,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:32:45,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760482125] [2022-01-28 12:32:45,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:45,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:32:45,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:32:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:32:45,919 INFO L87 Difference]: Start difference. First operand 5313 states and 10890 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) [2022-01-28 12:32:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:49,514 INFO L93 Difference]: Finished difference Result 8386 states and 17204 transitions. [2022-01-28 12:32:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:49,514 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 [2022-01-28 12:32:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:49,525 INFO L225 Difference]: With dead ends: 8386 [2022-01-28 12:32:49,525 INFO L226 Difference]: Without dead ends: 8386 [2022-01-28 12:32:49,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:32:49,526 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1775 mSDsluCounter, 8856 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 9430 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:49,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1775 Valid, 9430 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3241 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-28 12:32:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8386 states. [2022-01-28 12:32:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8386 to 4872. [2022-01-28 12:32:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:32:49,591 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:32:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:49,591 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:32:49,591 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) [2022-01-28 12:32:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:32:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:49,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:49,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:49,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-28 12:32:49,595 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)] === [2022-01-28 12:32:49,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:49,595 INFO L85 PathProgramCache]: Analyzing trace with hash -86186341, now seen corresponding path program 68 times [2022-01-28 12:32:49,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:49,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469730575] [2022-01-28 12:32:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:49,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:50,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:50,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469730575] [2022-01-28 12:32:50,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469730575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:50,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:50,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:32:50,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275969547] [2022-01-28 12:32:50,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:50,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:32:50,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:50,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:32:50,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:32:50,210 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-28 12:32:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:53,794 INFO L93 Difference]: Finished difference Result 6530 states and 13401 transitions. [2022-01-28 12:32:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:32:53,795 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 [2022-01-28 12:32:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:53,805 INFO L225 Difference]: With dead ends: 6530 [2022-01-28 12:32:53,805 INFO L226 Difference]: Without dead ends: 6530 [2022-01-28 12:32:53,806 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 [2022-01-28 12:32:53,806 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1543 mSDsluCounter, 9772 mSDsCounter, 0 mSdLazyCounter, 3678 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 10324 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:53,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 10324 Invalid, 3711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3678 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:32:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2022-01-28 12:32:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 4896. [2022-01-28 12:32:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 4893 states have (on average 2.0484365419987736) internal successors, (10023), 4895 states have internal predecessors, (10023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 10023 transitions. [2022-01-28 12:32:53,877 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 10023 transitions. Word has length 99 [2022-01-28 12:32:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:53,877 INFO L470 AbstractCegarLoop]: Abstraction has 4896 states and 10023 transitions. [2022-01-28 12:32:53,877 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) [2022-01-28 12:32:53,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 10023 transitions. [2022-01-28 12:32:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:53,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:53,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:53,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-28 12:32:53,881 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)] === [2022-01-28 12:32:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash -178829853, now seen corresponding path program 69 times [2022-01-28 12:32:53,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159841409] [2022-01-28 12:32:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:53,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:32:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:32:54,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:32:54,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159841409] [2022-01-28 12:32:54,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159841409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:32:54,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:32:54,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:32:54,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367116556] [2022-01-28 12:32:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:32:54,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:32:54,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:32:54,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:32:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:32:54,729 INFO L87 Difference]: Start difference. First operand 4896 states and 10023 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) [2022-01-28 12:32:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:32:59,618 INFO L93 Difference]: Finished difference Result 8589 states and 17647 transitions. [2022-01-28 12:32:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:32:59,618 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 [2022-01-28 12:32:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:32:59,628 INFO L225 Difference]: With dead ends: 8589 [2022-01-28 12:32:59,628 INFO L226 Difference]: Without dead ends: 8589 [2022-01-28 12:32:59,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:32:59,629 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1636 mSDsluCounter, 10947 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 11545 SdHoareTripleChecker+Invalid, 4145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:32:59,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 11545 Invalid, 4145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:32:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8589 states. [2022-01-28 12:32:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8589 to 4898. [2022-01-28 12:32:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4895 states have (on average 2.0484167517875385) internal successors, (10027), 4897 states have internal predecessors, (10027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:32:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 10027 transitions. [2022-01-28 12:32:59,687 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 10027 transitions. Word has length 99 [2022-01-28 12:32:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:32:59,687 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 10027 transitions. [2022-01-28 12:32:59,687 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) [2022-01-28 12:32:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 10027 transitions. [2022-01-28 12:32:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:32:59,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:32:59,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:32:59,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-28 12:32:59,691 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)] === [2022-01-28 12:32:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:32:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1028339571, now seen corresponding path program 70 times [2022-01-28 12:32:59,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:32:59,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830119242] [2022-01-28 12:32:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:32:59,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:32:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:00,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830119242] [2022-01-28 12:33:00,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830119242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:00,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:00,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:00,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774868835] [2022-01-28 12:33:00,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:00,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:00,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:00,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:00,562 INFO L87 Difference]: Start difference. First operand 4898 states and 10027 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) [2022-01-28 12:33:05,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:05,544 INFO L93 Difference]: Finished difference Result 6631 states and 13605 transitions. [2022-01-28 12:33:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:33:05,544 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 [2022-01-28 12:33:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:05,553 INFO L225 Difference]: With dead ends: 6631 [2022-01-28 12:33:05,553 INFO L226 Difference]: Without dead ends: 6631 [2022-01-28 12:33:05,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:33:05,554 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1523 mSDsluCounter, 9346 mSDsCounter, 0 mSdLazyCounter, 3448 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 9912 SdHoareTripleChecker+Invalid, 3487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:05,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 9912 Invalid, 3487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3448 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:33:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2022-01-28 12:33:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 4880. [2022-01-28 12:33:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4877 states have (on average 2.048185359852368) internal successors, (9989), 4879 states have internal predecessors, (9989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 9989 transitions. [2022-01-28 12:33:05,619 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 9989 transitions. Word has length 99 [2022-01-28 12:33:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:05,619 INFO L470 AbstractCegarLoop]: Abstraction has 4880 states and 9989 transitions. [2022-01-28 12:33:05,619 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) [2022-01-28 12:33:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 9989 transitions. [2022-01-28 12:33:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:05,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:05,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:05,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-28 12:33:05,623 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)] === [2022-01-28 12:33:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash -966883357, now seen corresponding path program 71 times [2022-01-28 12:33:05,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:05,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664370971] [2022-01-28 12:33:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:05,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:06,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:06,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664370971] [2022-01-28 12:33:06,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664370971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:06,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:06,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:33:06,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071245616] [2022-01-28 12:33:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:06,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:33:06,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:33:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:33:06,200 INFO L87 Difference]: Start difference. First operand 4880 states and 9989 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) [2022-01-28 12:33:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:10,301 INFO L93 Difference]: Finished difference Result 8741 states and 17957 transitions. [2022-01-28 12:33:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:33:10,302 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 [2022-01-28 12:33:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:10,313 INFO L225 Difference]: With dead ends: 8741 [2022-01-28 12:33:10,313 INFO L226 Difference]: Without dead ends: 8741 [2022-01-28 12:33:10,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-01-28 12:33:10,314 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1725 mSDsluCounter, 11371 mSDsCounter, 0 mSdLazyCounter, 4020 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 11993 SdHoareTripleChecker+Invalid, 4054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:10,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 11993 Invalid, 4054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4020 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:33:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2022-01-28 12:33:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 4881. [2022-01-28 12:33:10,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4881 states, 4878 states have (on average 2.0481754817548175) internal successors, (9991), 4880 states have internal predecessors, (9991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 9991 transitions. [2022-01-28 12:33:10,392 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 9991 transitions. Word has length 99 [2022-01-28 12:33:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:10,392 INFO L470 AbstractCegarLoop]: Abstraction has 4881 states and 9991 transitions. [2022-01-28 12:33:10,392 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) [2022-01-28 12:33:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 9991 transitions. [2022-01-28 12:33:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:10,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:10,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:10,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-28 12:33:10,397 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)] === [2022-01-28 12:33:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:10,397 INFO L85 PathProgramCache]: Analyzing trace with hash -988076429, now seen corresponding path program 72 times [2022-01-28 12:33:10,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:10,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050201718] [2022-01-28 12:33:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:10,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:10,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050201718] [2022-01-28 12:33:10,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050201718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:10,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:10,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:10,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010969163] [2022-01-28 12:33:10,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:10,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:10,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:10,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:10,907 INFO L87 Difference]: Start difference. First operand 4881 states and 9991 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) [2022-01-28 12:33:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:14,963 INFO L93 Difference]: Finished difference Result 7688 states and 15784 transitions. [2022-01-28 12:33:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:33:14,964 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 [2022-01-28 12:33:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:14,972 INFO L225 Difference]: With dead ends: 7688 [2022-01-28 12:33:14,973 INFO L226 Difference]: Without dead ends: 7688 [2022-01-28 12:33:14,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:33:14,973 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1646 mSDsluCounter, 11717 mSDsCounter, 0 mSdLazyCounter, 4339 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 12307 SdHoareTripleChecker+Invalid, 4378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:14,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 12307 Invalid, 4378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4339 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:33:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7688 states. [2022-01-28 12:33:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7688 to 4883. [2022-01-28 12:33:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4883 states, 4880 states have (on average 2.048155737704918) internal successors, (9995), 4882 states have internal predecessors, (9995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 9995 transitions. [2022-01-28 12:33:15,041 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 9995 transitions. Word has length 99 [2022-01-28 12:33:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:15,041 INFO L470 AbstractCegarLoop]: Abstraction has 4883 states and 9995 transitions. [2022-01-28 12:33:15,041 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) [2022-01-28 12:33:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 9995 transitions. [2022-01-28 12:33:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:15,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:15,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:15,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-28 12:33:15,045 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)] === [2022-01-28 12:33:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1472913395, now seen corresponding path program 73 times [2022-01-28 12:33:15,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:15,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718655577] [2022-01-28 12:33:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:15,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:15,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:15,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718655577] [2022-01-28 12:33:15,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718655577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:15,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:15,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:15,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709662335] [2022-01-28 12:33:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:15,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:15,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:15,961 INFO L87 Difference]: Start difference. First operand 4883 states and 9995 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) [2022-01-28 12:33:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:20,946 INFO L93 Difference]: Finished difference Result 6643 states and 13630 transitions. [2022-01-28 12:33:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:33:20,946 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 [2022-01-28 12:33:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:20,954 INFO L225 Difference]: With dead ends: 6643 [2022-01-28 12:33:20,954 INFO L226 Difference]: Without dead ends: 6643 [2022-01-28 12:33:20,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:33:20,955 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1748 mSDsluCounter, 10657 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 11223 SdHoareTripleChecker+Invalid, 4111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:20,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 11223 Invalid, 4111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:33:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2022-01-28 12:33:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 4872. [2022-01-28 12:33:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4869 states have (on average 2.048059149722736) internal successors, (9972), 4871 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 9972 transitions. [2022-01-28 12:33:21,020 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 9972 transitions. Word has length 99 [2022-01-28 12:33:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:21,020 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 9972 transitions. [2022-01-28 12:33:21,020 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) [2022-01-28 12:33:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 9972 transitions. [2022-01-28 12:33:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:21,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:21,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:21,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-28 12:33:21,025 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)] === [2022-01-28 12:33:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1628672577, now seen corresponding path program 74 times [2022-01-28 12:33:21,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208208368] [2022-01-28 12:33:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:21,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:21,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208208368] [2022-01-28 12:33:21,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208208368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:21,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:21,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:21,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048913270] [2022-01-28 12:33:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:21,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:21,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:21,573 INFO L87 Difference]: Start difference. First operand 4872 states and 9972 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) [2022-01-28 12:33:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:26,826 INFO L93 Difference]: Finished difference Result 7027 states and 14376 transitions. [2022-01-28 12:33:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-28 12:33:26,826 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 [2022-01-28 12:33:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:26,835 INFO L225 Difference]: With dead ends: 7027 [2022-01-28 12:33:26,835 INFO L226 Difference]: Without dead ends: 7027 [2022-01-28 12:33:26,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1251, Invalid=5721, Unknown=0, NotChecked=0, Total=6972 [2022-01-28 12:33:26,836 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 2177 mSDsluCounter, 11572 mSDsCounter, 0 mSdLazyCounter, 4169 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 12162 SdHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:26,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2177 Valid, 12162 Invalid, 4224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:33:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7027 states. [2022-01-28 12:33:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7027 to 4887. [2022-01-28 12:33:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4884 states have (on average 2.0479115479115477) internal successors, (10002), 4886 states have internal predecessors, (10002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 10002 transitions. [2022-01-28 12:33:26,894 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 10002 transitions. Word has length 99 [2022-01-28 12:33:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:26,894 INFO L470 AbstractCegarLoop]: Abstraction has 4887 states and 10002 transitions. [2022-01-28 12:33:26,894 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) [2022-01-28 12:33:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 10002 transitions. [2022-01-28 12:33:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:26,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:26,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:26,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-28 12:33:26,898 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)] === [2022-01-28 12:33:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1781291341, now seen corresponding path program 75 times [2022-01-28 12:33:26,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:26,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918827130] [2022-01-28 12:33:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:26,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:27,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:27,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918827130] [2022-01-28 12:33:27,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918827130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:27,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:27,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:27,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075076096] [2022-01-28 12:33:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:27,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:27,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:27,529 INFO L87 Difference]: Start difference. First operand 4887 states and 10002 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) [2022-01-28 12:33:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:33,246 INFO L93 Difference]: Finished difference Result 7452 states and 15275 transitions. [2022-01-28 12:33:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:33:33,246 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 [2022-01-28 12:33:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:33,255 INFO L225 Difference]: With dead ends: 7452 [2022-01-28 12:33:33,255 INFO L226 Difference]: Without dead ends: 7452 [2022-01-28 12:33:33,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1172, Invalid=5470, Unknown=0, NotChecked=0, Total=6642 [2022-01-28 12:33:33,256 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1825 mSDsluCounter, 11185 mSDsCounter, 0 mSdLazyCounter, 4030 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 11775 SdHoareTripleChecker+Invalid, 4073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:33,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 11775 Invalid, 4073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4030 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:33:33,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7452 states. [2022-01-28 12:33:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7452 to 4888. [2022-01-28 12:33:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4885 states have (on average 2.0479017400204707) internal successors, (10004), 4887 states have internal predecessors, (10004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-28 12:33:33,319 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-28 12:33:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:33,319 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-28 12:33:33,319 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) [2022-01-28 12:33:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-28 12:33:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:33,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:33,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:33,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-28 12:33:33,323 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)] === [2022-01-28 12:33:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1760098269, now seen corresponding path program 76 times [2022-01-28 12:33:33,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:33,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350562435] [2022-01-28 12:33:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:33,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:34,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:34,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350562435] [2022-01-28 12:33:34,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350562435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:34,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:34,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:33:34,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792428161] [2022-01-28 12:33:34,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:34,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:33:34,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:33:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:33:34,133 INFO L87 Difference]: Start difference. First operand 4888 states and 10004 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) [2022-01-28 12:33:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:38,645 INFO L93 Difference]: Finished difference Result 7365 states and 15098 transitions. [2022-01-28 12:33:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:33:38,645 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 [2022-01-28 12:33:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:38,654 INFO L225 Difference]: With dead ends: 7365 [2022-01-28 12:33:38,654 INFO L226 Difference]: Without dead ends: 7365 [2022-01-28 12:33:38,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1038, Invalid=4968, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:33:38,655 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1777 mSDsluCounter, 9626 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 10193 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:38,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1777 Valid, 10193 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3462 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:33:38,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7365 states. [2022-01-28 12:33:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7365 to 4890. [2022-01-28 12:33:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4890 states, 4887 states have (on average 2.0478821362799264) internal successors, (10008), 4889 states have internal predecessors, (10008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10008 transitions. [2022-01-28 12:33:38,751 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10008 transitions. Word has length 99 [2022-01-28 12:33:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:38,751 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10008 transitions. [2022-01-28 12:33:38,752 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) [2022-01-28 12:33:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10008 transitions. [2022-01-28 12:33:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:38,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:38,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:38,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-28 12:33:38,756 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)] === [2022-01-28 12:33:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash -73879203, now seen corresponding path program 77 times [2022-01-28 12:33:38,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:38,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250028249] [2022-01-28 12:33:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:38,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:39,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:39,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250028249] [2022-01-28 12:33:39,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250028249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:39,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:39,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:39,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712918214] [2022-01-28 12:33:39,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:39,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:39,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:39,318 INFO L87 Difference]: Start difference. First operand 4890 states and 10008 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) [2022-01-28 12:33:43,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:43,112 INFO L93 Difference]: Finished difference Result 6320 states and 12944 transitions. [2022-01-28 12:33:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:33:43,112 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 [2022-01-28 12:33:43,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:43,119 INFO L225 Difference]: With dead ends: 6320 [2022-01-28 12:33:43,119 INFO L226 Difference]: Without dead ends: 6320 [2022-01-28 12:33:43,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=946, Invalid=4754, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:33:43,120 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1591 mSDsluCounter, 9480 mSDsCounter, 0 mSdLazyCounter, 3546 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 10023 SdHoareTripleChecker+Invalid, 3589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:43,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 10023 Invalid, 3589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3546 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:33:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2022-01-28 12:33:43,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 4887. [2022-01-28 12:33:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4884 states have (on average 2.0479115479115477) internal successors, (10002), 4886 states have internal predecessors, (10002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 10002 transitions. [2022-01-28 12:33:43,170 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 10002 transitions. Word has length 99 [2022-01-28 12:33:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:43,171 INFO L470 AbstractCegarLoop]: Abstraction has 4887 states and 10002 transitions. [2022-01-28 12:33:43,171 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) [2022-01-28 12:33:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 10002 transitions. [2022-01-28 12:33:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:43,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:43,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:43,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-28 12:33:43,175 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)] === [2022-01-28 12:33:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1594576337, now seen corresponding path program 78 times [2022-01-28 12:33:43,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:43,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099027505] [2022-01-28 12:33:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:43,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:44,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:44,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099027505] [2022-01-28 12:33:44,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099027505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:44,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:44,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:33:44,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178777532] [2022-01-28 12:33:44,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:44,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:33:44,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:44,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:33:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:33:44,193 INFO L87 Difference]: Start difference. First operand 4887 states and 10002 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:48,578 INFO L93 Difference]: Finished difference Result 7572 states and 15568 transitions. [2022-01-28 12:33:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:33:48,579 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:33:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:48,588 INFO L225 Difference]: With dead ends: 7572 [2022-01-28 12:33:48,588 INFO L226 Difference]: Without dead ends: 7572 [2022-01-28 12:33:48,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:33:48,588 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1709 mSDsluCounter, 10764 mSDsCounter, 0 mSdLazyCounter, 4530 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 11325 SdHoareTripleChecker+Invalid, 4573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:48,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 11325 Invalid, 4573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4530 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:33:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7572 states. [2022-01-28 12:33:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7572 to 5202. [2022-01-28 12:33:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 5199 states have (on average 2.05577995768417) internal successors, (10688), 5201 states have internal predecessors, (10688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 10688 transitions. [2022-01-28 12:33:48,650 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 10688 transitions. Word has length 99 [2022-01-28 12:33:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:48,651 INFO L470 AbstractCegarLoop]: Abstraction has 5202 states and 10688 transitions. [2022-01-28 12:33:48,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 10688 transitions. [2022-01-28 12:33:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:48,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:48,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:48,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-28 12:33:48,655 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)] === [2022-01-28 12:33:48,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:48,655 INFO L85 PathProgramCache]: Analyzing trace with hash -492510357, now seen corresponding path program 79 times [2022-01-28 12:33:48,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:48,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414659153] [2022-01-28 12:33:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:48,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:49,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:49,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414659153] [2022-01-28 12:33:49,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414659153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:49,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:49,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:33:49,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903837400] [2022-01-28 12:33:49,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:49,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:33:49,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:33:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:33:49,284 INFO L87 Difference]: Start difference. First operand 5202 states and 10688 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) [2022-01-28 12:33:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:53,335 INFO L93 Difference]: Finished difference Result 8368 states and 17208 transitions. [2022-01-28 12:33:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:33:53,335 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 [2022-01-28 12:33:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:53,346 INFO L225 Difference]: With dead ends: 8368 [2022-01-28 12:33:53,346 INFO L226 Difference]: Without dead ends: 8368 [2022-01-28 12:33:53,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:33:53,347 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1686 mSDsluCounter, 8813 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 9370 SdHoareTripleChecker+Invalid, 3396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:53,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1686 Valid, 9370 Invalid, 3396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3359 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:33:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8368 states. [2022-01-28 12:33:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8368 to 4912. [2022-01-28 12:33:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4909 states have (on average 2.048278671827256) internal successors, (10055), 4911 states have internal predecessors, (10055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 10055 transitions. [2022-01-28 12:33:53,423 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 10055 transitions. Word has length 99 [2022-01-28 12:33:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:53,423 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 10055 transitions. [2022-01-28 12:33:53,423 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) [2022-01-28 12:33:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 10055 transitions. [2022-01-28 12:33:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:53,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:53,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:53,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-28 12:33:53,427 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)] === [2022-01-28 12:33:53,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1687219849, now seen corresponding path program 80 times [2022-01-28 12:33:53,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:53,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588656730] [2022-01-28 12:33:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:53,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:53,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:53,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588656730] [2022-01-28 12:33:53,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588656730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:53,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:53,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:53,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702995339] [2022-01-28 12:33:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:53,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:53,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:53,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:53,989 INFO L87 Difference]: Start difference. First operand 4912 states and 10055 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) [2022-01-28 12:33:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:33:58,266 INFO L93 Difference]: Finished difference Result 8975 states and 18458 transitions. [2022-01-28 12:33:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:33:58,266 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 [2022-01-28 12:33:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:33:58,276 INFO L225 Difference]: With dead ends: 8975 [2022-01-28 12:33:58,276 INFO L226 Difference]: Without dead ends: 8975 [2022-01-28 12:33:58,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:33:58,276 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1774 mSDsluCounter, 10554 mSDsCounter, 0 mSdLazyCounter, 4064 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 11157 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 4064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:33:58,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 11157 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 4064 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:33:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-01-28 12:33:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 4914. [2022-01-28 12:33:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4911 states have (on average 2.04825901038485) internal successors, (10059), 4913 states have internal predecessors, (10059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:33:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 10059 transitions. [2022-01-28 12:33:58,338 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 10059 transitions. Word has length 99 [2022-01-28 12:33:58,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:33:58,338 INFO L470 AbstractCegarLoop]: Abstraction has 4914 states and 10059 transitions. [2022-01-28 12:33:58,338 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) [2022-01-28 12:33:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 10059 transitions. [2022-01-28 12:33:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:33:58,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:33:58,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:33:58,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-28 12:33:58,342 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)] === [2022-01-28 12:33:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:33:58,342 INFO L85 PathProgramCache]: Analyzing trace with hash -480050425, now seen corresponding path program 81 times [2022-01-28 12:33:58,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:33:58,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819211411] [2022-01-28 12:33:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:33:58,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:33:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:33:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:33:59,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:33:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819211411] [2022-01-28 12:33:59,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819211411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:33:59,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:33:59,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:33:59,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018430757] [2022-01-28 12:33:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:33:59,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:33:59,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:33:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:33:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:33:59,234 INFO L87 Difference]: Start difference. First operand 4914 states and 10059 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) [2022-01-28 12:34:04,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:04,026 INFO L93 Difference]: Finished difference Result 7017 states and 14416 transitions. [2022-01-28 12:34:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:34:04,026 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 [2022-01-28 12:34:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:04,035 INFO L225 Difference]: With dead ends: 7017 [2022-01-28 12:34:04,035 INFO L226 Difference]: Without dead ends: 7017 [2022-01-28 12:34:04,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:34:04,036 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1547 mSDsluCounter, 10087 mSDsCounter, 0 mSdLazyCounter, 3868 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 10658 SdHoareTripleChecker+Invalid, 3908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:04,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 10658 Invalid, 3908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3868 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:34:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2022-01-28 12:34:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 4896. [2022-01-28 12:34:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 4893 states have (on average 2.0480277948089105) internal successors, (10021), 4895 states have internal predecessors, (10021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 10021 transitions. [2022-01-28 12:34:04,106 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 10021 transitions. Word has length 99 [2022-01-28 12:34:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:04,108 INFO L470 AbstractCegarLoop]: Abstraction has 4896 states and 10021 transitions. [2022-01-28 12:34:04,108 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) [2022-01-28 12:34:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 10021 transitions. [2022-01-28 12:34:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:04,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:04,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:04,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-28 12:34:04,113 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)] === [2022-01-28 12:34:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1819693943, now seen corresponding path program 82 times [2022-01-28 12:34:04,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:04,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178600539] [2022-01-28 12:34:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:04,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:04,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:04,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178600539] [2022-01-28 12:34:04,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178600539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:04,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:04,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:34:04,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899941225] [2022-01-28 12:34:04,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:04,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:34:04,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:34:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:34:04,903 INFO L87 Difference]: Start difference. First operand 4896 states and 10021 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) [2022-01-28 12:34:10,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:10,383 INFO L93 Difference]: Finished difference Result 9008 states and 18510 transitions. [2022-01-28 12:34:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:34:10,383 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 [2022-01-28 12:34:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:10,413 INFO L225 Difference]: With dead ends: 9008 [2022-01-28 12:34:10,413 INFO L226 Difference]: Without dead ends: 9008 [2022-01-28 12:34:10,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1180, Invalid=5462, Unknown=0, NotChecked=0, Total=6642 [2022-01-28 12:34:10,413 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1829 mSDsluCounter, 10588 mSDsCounter, 0 mSdLazyCounter, 3817 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 11215 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:10,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 11215 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3817 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:34:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9008 states. [2022-01-28 12:34:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9008 to 4897. [2022-01-28 12:34:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4897 states, 4894 states have (on average 2.0480179812014714) internal successors, (10023), 4896 states have internal predecessors, (10023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4897 states to 4897 states and 10023 transitions. [2022-01-28 12:34:10,475 INFO L78 Accepts]: Start accepts. Automaton has 4897 states and 10023 transitions. Word has length 99 [2022-01-28 12:34:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:10,475 INFO L470 AbstractCegarLoop]: Abstraction has 4897 states and 10023 transitions. [2022-01-28 12:34:10,475 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) [2022-01-28 12:34:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4897 states and 10023 transitions. [2022-01-28 12:34:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:10,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:10,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:10,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-28 12:34:10,479 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)] === [2022-01-28 12:34:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1798500871, now seen corresponding path program 83 times [2022-01-28 12:34:10,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:10,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271563766] [2022-01-28 12:34:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:10,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:11,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:11,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271563766] [2022-01-28 12:34:11,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271563766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:11,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:11,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:34:11,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749768299] [2022-01-28 12:34:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:11,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:34:11,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:34:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:34:11,090 INFO L87 Difference]: Start difference. First operand 4897 states and 10023 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) [2022-01-28 12:34:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:15,025 INFO L93 Difference]: Finished difference Result 8031 states and 16489 transitions. [2022-01-28 12:34:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:34:15,026 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 [2022-01-28 12:34:15,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:15,034 INFO L225 Difference]: With dead ends: 8031 [2022-01-28 12:34:15,034 INFO L226 Difference]: Without dead ends: 8031 [2022-01-28 12:34:15,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:34:15,035 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1908 mSDsluCounter, 10237 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 10832 SdHoareTripleChecker+Invalid, 3899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:15,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 10832 Invalid, 3899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:34:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8031 states. [2022-01-28 12:34:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8031 to 4899. [2022-01-28 12:34:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4896 states have (on average 2.047998366013072) internal successors, (10027), 4898 states have internal predecessors, (10027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 10027 transitions. [2022-01-28 12:34:15,088 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 10027 transitions. Word has length 99 [2022-01-28 12:34:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:15,088 INFO L470 AbstractCegarLoop]: Abstraction has 4899 states and 10027 transitions. [2022-01-28 12:34:15,088 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) [2022-01-28 12:34:15,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 10027 transitions. [2022-01-28 12:34:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:15,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:15,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:15,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-28 12:34:15,092 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)] === [2022-01-28 12:34:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash -35476601, now seen corresponding path program 84 times [2022-01-28 12:34:15,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983926220] [2022-01-28 12:34:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:15,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:15,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:15,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983926220] [2022-01-28 12:34:15,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983926220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:15,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:15,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:34:15,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131776309] [2022-01-28 12:34:15,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:15,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:34:15,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:34:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:34:15,880 INFO L87 Difference]: Start difference. First operand 4899 states and 10027 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) [2022-01-28 12:34:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:21,352 INFO L93 Difference]: Finished difference Result 6986 states and 14335 transitions. [2022-01-28 12:34:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:34:21,353 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 [2022-01-28 12:34:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:21,363 INFO L225 Difference]: With dead ends: 6986 [2022-01-28 12:34:21,363 INFO L226 Difference]: Without dead ends: 6986 [2022-01-28 12:34:21,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:34:21,364 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1650 mSDsluCounter, 10365 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 10936 SdHoareTripleChecker+Invalid, 3996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:21,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1650 Valid, 10936 Invalid, 3996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:34:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2022-01-28 12:34:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 4888. [2022-01-28 12:34:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4885 states have (on average 2.0479017400204707) internal successors, (10004), 4887 states have internal predecessors, (10004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 10004 transitions. [2022-01-28 12:34:21,435 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 10004 transitions. Word has length 99 [2022-01-28 12:34:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:21,435 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 10004 transitions. [2022-01-28 12:34:21,435 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) [2022-01-28 12:34:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 10004 transitions. [2022-01-28 12:34:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:21,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:21,440 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] [2022-01-28 12:34:21,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-28 12:34:21,440 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)] === [2022-01-28 12:34:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:21,440 INFO L85 PathProgramCache]: Analyzing trace with hash -67592007, now seen corresponding path program 85 times [2022-01-28 12:34:21,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:21,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940116654] [2022-01-28 12:34:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:21,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:22,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:22,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940116654] [2022-01-28 12:34:22,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940116654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:22,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:22,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:34:22,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464563535] [2022-01-28 12:34:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:22,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:34:22,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:34:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:34:22,670 INFO L87 Difference]: Start difference. First operand 4888 states and 10004 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) [2022-01-28 12:34:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:28,885 INFO L93 Difference]: Finished difference Result 7908 states and 16281 transitions. [2022-01-28 12:34:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:34:28,885 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 [2022-01-28 12:34:28,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:28,896 INFO L225 Difference]: With dead ends: 7908 [2022-01-28 12:34:28,896 INFO L226 Difference]: Without dead ends: 7908 [2022-01-28 12:34:28,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1406, Invalid=7150, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:34:28,897 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1836 mSDsluCounter, 11228 mSDsCounter, 0 mSdLazyCounter, 4694 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 11788 SdHoareTripleChecker+Invalid, 4741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:28,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 11788 Invalid, 4741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4694 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:34:28,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7908 states. [2022-01-28 12:34:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7908 to 5199. [2022-01-28 12:34:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5196 states have (on average 2.0556197074672826) internal successors, (10681), 5198 states have internal predecessors, (10681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 10681 transitions. [2022-01-28 12:34:28,968 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 10681 transitions. Word has length 99 [2022-01-28 12:34:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:28,968 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 10681 transitions. [2022-01-28 12:34:28,968 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) [2022-01-28 12:34:28,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 10681 transitions. [2022-01-28 12:34:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:28,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:28,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:28,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-28 12:34:28,973 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)] === [2022-01-28 12:34:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1034473973, now seen corresponding path program 86 times [2022-01-28 12:34:28,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:28,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010554281] [2022-01-28 12:34:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:28,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:29,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:29,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010554281] [2022-01-28 12:34:29,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010554281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:29,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:29,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:34:29,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989978026] [2022-01-28 12:34:29,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:29,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:34:29,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:29,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:34:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:34:29,861 INFO L87 Difference]: Start difference. First operand 5199 states and 10681 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) [2022-01-28 12:34:34,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:34,710 INFO L93 Difference]: Finished difference Result 8341 states and 17151 transitions. [2022-01-28 12:34:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:34:34,710 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 [2022-01-28 12:34:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:34,721 INFO L225 Difference]: With dead ends: 8341 [2022-01-28 12:34:34,722 INFO L226 Difference]: Without dead ends: 8341 [2022-01-28 12:34:34,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:34:34,723 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1628 mSDsluCounter, 8734 mSDsCounter, 0 mSdLazyCounter, 3382 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 9290 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:34,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 9290 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3382 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:34:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2022-01-28 12:34:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 4906. [2022-01-28 12:34:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 4903 states have (on average 2.048133795635325) internal successors, (10042), 4905 states have internal predecessors, (10042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 10042 transitions. [2022-01-28 12:34:34,809 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 10042 transitions. Word has length 99 [2022-01-28 12:34:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:34,809 INFO L470 AbstractCegarLoop]: Abstraction has 4906 states and 10042 transitions. [2022-01-28 12:34:34,809 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) [2022-01-28 12:34:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 10042 transitions. [2022-01-28 12:34:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:34,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:34,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:34,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-28 12:34:34,814 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)] === [2022-01-28 12:34:34,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash -160235519, now seen corresponding path program 87 times [2022-01-28 12:34:34,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:34,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187333472] [2022-01-28 12:34:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:34,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:35,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:35,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187333472] [2022-01-28 12:34:35,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187333472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:35,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:35,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:34:35,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76199460] [2022-01-28 12:34:35,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:35,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:34:35,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:35,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:34:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:34:35,629 INFO L87 Difference]: Start difference. First operand 4906 states and 10042 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) [2022-01-28 12:34:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:40,917 INFO L93 Difference]: Finished difference Result 8836 states and 18158 transitions. [2022-01-28 12:34:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:34:40,917 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 [2022-01-28 12:34:40,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:40,929 INFO L225 Difference]: With dead ends: 8836 [2022-01-28 12:34:40,930 INFO L226 Difference]: Without dead ends: 8836 [2022-01-28 12:34:40,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:34:40,930 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1786 mSDsluCounter, 9747 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 10349 SdHoareTripleChecker+Invalid, 3727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:40,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 10349 Invalid, 3727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:34:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2022-01-28 12:34:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 4908. [2022-01-28 12:34:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4905 states have (on average 2.048114169215087) internal successors, (10046), 4907 states have internal predecessors, (10046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 10046 transitions. [2022-01-28 12:34:41,002 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 10046 transitions. Word has length 99 [2022-01-28 12:34:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:41,002 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 10046 transitions. [2022-01-28 12:34:41,003 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) [2022-01-28 12:34:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 10046 transitions. [2022-01-28 12:34:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:41,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:41,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:41,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-28 12:34:41,007 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)] === [2022-01-28 12:34:41,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1046933905, now seen corresponding path program 88 times [2022-01-28 12:34:41,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:41,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638104482] [2022-01-28 12:34:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:41,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:41,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:41,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638104482] [2022-01-28 12:34:41,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638104482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:41,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:41,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-28 12:34:41,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205118565] [2022-01-28 12:34:41,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:41,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-28 12:34:41,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-28 12:34:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-01-28 12:34:41,690 INFO L87 Difference]: Start difference. First operand 4908 states and 10046 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) [2022-01-28 12:34:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:46,076 INFO L93 Difference]: Finished difference Result 6946 states and 14252 transitions. [2022-01-28 12:34:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-28 12:34:46,076 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 [2022-01-28 12:34:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:46,085 INFO L225 Difference]: With dead ends: 6946 [2022-01-28 12:34:46,085 INFO L226 Difference]: Without dead ends: 6946 [2022-01-28 12:34:46,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=901, Invalid=4355, Unknown=0, NotChecked=0, Total=5256 [2022-01-28 12:34:46,086 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1467 mSDsluCounter, 9005 mSDsCounter, 0 mSdLazyCounter, 3368 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 9561 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:46,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 9561 Invalid, 3401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3368 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:34:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2022-01-28 12:34:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 4890. [2022-01-28 12:34:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4890 states, 4887 states have (on average 2.0478821362799264) internal successors, (10008), 4889 states have internal predecessors, (10008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10008 transitions. [2022-01-28 12:34:46,147 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10008 transitions. Word has length 99 [2022-01-28 12:34:46,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:46,147 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10008 transitions. [2022-01-28 12:34:46,147 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) [2022-01-28 12:34:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10008 transitions. [2022-01-28 12:34:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:46,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:46,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:46,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-28 12:34:46,151 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)] === [2022-01-28 12:34:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1638182441, now seen corresponding path program 89 times [2022-01-28 12:34:46,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:46,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456615961] [2022-01-28 12:34:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:46,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:46,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:46,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456615961] [2022-01-28 12:34:46,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456615961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:46,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:46,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:34:46,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71219092] [2022-01-28 12:34:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:46,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:34:46,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:46,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:34:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:34:46,775 INFO L87 Difference]: Start difference. First operand 4890 states and 10008 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) [2022-01-28 12:34:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:50,499 INFO L93 Difference]: Finished difference Result 6633 states and 13607 transitions. [2022-01-28 12:34:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:34:50,500 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 [2022-01-28 12:34:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:50,511 INFO L225 Difference]: With dead ends: 6633 [2022-01-28 12:34:50,512 INFO L226 Difference]: Without dead ends: 6633 [2022-01-28 12:34:50,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:34:50,512 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1600 mSDsluCounter, 9128 mSDsCounter, 0 mSdLazyCounter, 3671 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 9682 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:50,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 9682 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3671 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:34:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2022-01-28 12:34:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 4887. [2022-01-28 12:34:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4884 states have (on average 2.0479115479115477) internal successors, (10002), 4886 states have internal predecessors, (10002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 10002 transitions. [2022-01-28 12:34:50,587 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 10002 transitions. Word has length 99 [2022-01-28 12:34:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:50,587 INFO L470 AbstractCegarLoop]: Abstraction has 4887 states and 10002 transitions. [2022-01-28 12:34:50,587 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) [2022-01-28 12:34:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 10002 transitions. [2022-01-28 12:34:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:50,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:50,592 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] [2022-01-28 12:34:50,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-28 12:34:50,592 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)] === [2022-01-28 12:34:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1568360313, now seen corresponding path program 90 times [2022-01-28 12:34:50,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:50,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967965404] [2022-01-28 12:34:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:50,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:51,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:51,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967965404] [2022-01-28 12:34:51,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967965404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:51,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:51,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:34:51,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089168498] [2022-01-28 12:34:51,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:51,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:34:51,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:34:51,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:34:51,496 INFO L87 Difference]: Start difference. First operand 4887 states and 10002 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) [2022-01-28 12:34:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:34:56,483 INFO L93 Difference]: Finished difference Result 6976 states and 14332 transitions. [2022-01-28 12:34:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:34:56,483 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 [2022-01-28 12:34:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:34:56,495 INFO L225 Difference]: With dead ends: 6976 [2022-01-28 12:34:56,495 INFO L226 Difference]: Without dead ends: 6976 [2022-01-28 12:34:56,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:34:56,496 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1529 mSDsluCounter, 9216 mSDsCounter, 0 mSdLazyCounter, 3531 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 9773 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:34:56,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 9773 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3531 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:34:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2022-01-28 12:34:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 4914. [2022-01-28 12:34:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4911 states have (on average 2.04825901038485) internal successors, (10059), 4913 states have internal predecessors, (10059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:34:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 10059 transitions. [2022-01-28 12:34:56,566 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 10059 transitions. Word has length 99 [2022-01-28 12:34:56,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:34:56,566 INFO L470 AbstractCegarLoop]: Abstraction has 4914 states and 10059 transitions. [2022-01-28 12:34:56,566 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) [2022-01-28 12:34:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 10059 transitions. [2022-01-28 12:34:56,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:34:56,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:34:56,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:34:56,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-28 12:34:56,571 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)] === [2022-01-28 12:34:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:34:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1661003825, now seen corresponding path program 91 times [2022-01-28 12:34:56,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:34:56,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574412965] [2022-01-28 12:34:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:34:56,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:34:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:34:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:34:57,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:34:57,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574412965] [2022-01-28 12:34:57,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574412965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:34:57,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:34:57,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:34:57,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797118067] [2022-01-28 12:34:57,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:34:57,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:34:57,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:34:57,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:34:57,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:34:57,446 INFO L87 Difference]: Start difference. First operand 4914 states and 10059 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) [2022-01-28 12:35:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:02,923 INFO L93 Difference]: Finished difference Result 9035 states and 18578 transitions. [2022-01-28 12:35:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:35:02,924 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 [2022-01-28 12:35:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:02,962 INFO L225 Difference]: With dead ends: 9035 [2022-01-28 12:35:02,962 INFO L226 Difference]: Without dead ends: 9035 [2022-01-28 12:35:02,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:35:02,963 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1629 mSDsluCounter, 10602 mSDsCounter, 0 mSdLazyCounter, 3983 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 11205 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:02,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 11205 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3983 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:35:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9035 states. [2022-01-28 12:35:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9035 to 4916. [2022-01-28 12:35:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4916 states, 4913 states have (on average 2.0482393649501325) internal successors, (10063), 4915 states have internal predecessors, (10063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 10063 transitions. [2022-01-28 12:35:03,115 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 10063 transitions. Word has length 99 [2022-01-28 12:35:03,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:03,115 INFO L470 AbstractCegarLoop]: Abstraction has 4916 states and 10063 transitions. [2022-01-28 12:35:03,116 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) [2022-01-28 12:35:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 10063 transitions. [2022-01-28 12:35:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:03,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:03,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:03,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-28 12:35:03,134 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)] === [2022-01-28 12:35:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash -453834401, now seen corresponding path program 92 times [2022-01-28 12:35:03,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:03,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905875028] [2022-01-28 12:35:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:03,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:04,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:04,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905875028] [2022-01-28 12:35:04,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905875028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:04,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:04,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:35:04,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317761309] [2022-01-28 12:35:04,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:04,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:35:04,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:35:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:35:04,053 INFO L87 Difference]: Start difference. First operand 4916 states and 10063 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) [2022-01-28 12:35:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:09,371 INFO L93 Difference]: Finished difference Result 7077 states and 14536 transitions. [2022-01-28 12:35:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:35:09,372 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 [2022-01-28 12:35:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:09,407 INFO L225 Difference]: With dead ends: 7077 [2022-01-28 12:35:09,408 INFO L226 Difference]: Without dead ends: 7077 [2022-01-28 12:35:09,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:35:09,410 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1697 mSDsluCounter, 9930 mSDsCounter, 0 mSdLazyCounter, 3803 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 10501 SdHoareTripleChecker+Invalid, 3844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:09,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 10501 Invalid, 3844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3803 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-28 12:35:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2022-01-28 12:35:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 4898. [2022-01-28 12:35:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4895 states have (on average 2.0480081716036773) internal successors, (10025), 4897 states have internal predecessors, (10025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 10025 transitions. [2022-01-28 12:35:09,556 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 10025 transitions. Word has length 99 [2022-01-28 12:35:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:09,556 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 10025 transitions. [2022-01-28 12:35:09,557 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) [2022-01-28 12:35:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 10025 transitions. [2022-01-28 12:35:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:09,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:09,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:09,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-28 12:35:09,563 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)] === [2022-01-28 12:35:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1845909967, now seen corresponding path program 93 times [2022-01-28 12:35:09,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:09,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873491773] [2022-01-28 12:35:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:09,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:10,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:10,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873491773] [2022-01-28 12:35:10,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873491773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:10,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:10,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:35:10,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129407860] [2022-01-28 12:35:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:10,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:35:10,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:35:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:35:10,358 INFO L87 Difference]: Start difference. First operand 4898 states and 10025 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) [2022-01-28 12:35:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:15,424 INFO L93 Difference]: Finished difference Result 9068 states and 18630 transitions. [2022-01-28 12:35:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:35:15,424 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 [2022-01-28 12:35:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:15,436 INFO L225 Difference]: With dead ends: 9068 [2022-01-28 12:35:15,436 INFO L226 Difference]: Without dead ends: 9068 [2022-01-28 12:35:15,437 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 [2022-01-28 12:35:15,437 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1752 mSDsluCounter, 11430 mSDsCounter, 0 mSdLazyCounter, 4197 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 12057 SdHoareTripleChecker+Invalid, 4233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:15,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 12057 Invalid, 4233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 4197 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:35:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9068 states. [2022-01-28 12:35:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9068 to 4899. [2022-01-28 12:35:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4896 states have (on average 2.047998366013072) internal successors, (10027), 4898 states have internal predecessors, (10027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 10027 transitions. [2022-01-28 12:35:15,509 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 10027 transitions. Word has length 99 [2022-01-28 12:35:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:15,509 INFO L470 AbstractCegarLoop]: Abstraction has 4899 states and 10027 transitions. [2022-01-28 12:35:15,509 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) [2022-01-28 12:35:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 10027 transitions. [2022-01-28 12:35:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:15,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:15,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:15,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-28 12:35:15,513 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)] === [2022-01-28 12:35:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1824716895, now seen corresponding path program 94 times [2022-01-28 12:35:15,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:15,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240160158] [2022-01-28 12:35:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:15,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:16,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:16,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240160158] [2022-01-28 12:35:16,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240160158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:16,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:16,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:35:16,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769398849] [2022-01-28 12:35:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:16,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:35:16,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:35:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:35:16,099 INFO L87 Difference]: Start difference. First operand 4899 states and 10027 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) [2022-01-28 12:35:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:20,842 INFO L93 Difference]: Finished difference Result 8091 states and 16609 transitions. [2022-01-28 12:35:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:35:20,842 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 [2022-01-28 12:35:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:20,852 INFO L225 Difference]: With dead ends: 8091 [2022-01-28 12:35:20,852 INFO L226 Difference]: Without dead ends: 8091 [2022-01-28 12:35:20,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:35:20,853 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1824 mSDsluCounter, 10331 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 10926 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:20,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1824 Valid, 10926 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3935 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:35:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2022-01-28 12:35:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 4901. [2022-01-28 12:35:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4901 states, 4898 states have (on average 2.0479787668436096) internal successors, (10031), 4900 states have internal predecessors, (10031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4901 states to 4901 states and 10031 transitions. [2022-01-28 12:35:20,926 INFO L78 Accepts]: Start accepts. Automaton has 4901 states and 10031 transitions. Word has length 99 [2022-01-28 12:35:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:20,926 INFO L470 AbstractCegarLoop]: Abstraction has 4901 states and 10031 transitions. [2022-01-28 12:35:20,926 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) [2022-01-28 12:35:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4901 states and 10031 transitions. [2022-01-28 12:35:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:20,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:20,930 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] [2022-01-28 12:35:20,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-28 12:35:20,930 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)] === [2022-01-28 12:35:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash -9260577, now seen corresponding path program 95 times [2022-01-28 12:35:20,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:20,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740476030] [2022-01-28 12:35:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:20,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:21,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:21,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740476030] [2022-01-28 12:35:21,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740476030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:21,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:21,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:35:21,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208764568] [2022-01-28 12:35:21,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:21,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:35:21,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:35:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:35:21,820 INFO L87 Difference]: Start difference. First operand 4901 states and 10031 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) [2022-01-28 12:35:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:25,522 INFO L93 Difference]: Finished difference Result 7046 states and 14455 transitions. [2022-01-28 12:35:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:35:25,522 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 [2022-01-28 12:35:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:25,531 INFO L225 Difference]: With dead ends: 7046 [2022-01-28 12:35:25,531 INFO L226 Difference]: Without dead ends: 7046 [2022-01-28 12:35:25,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=950, Invalid=4750, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:35:25,532 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1575 mSDsluCounter, 9730 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 10301 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:25,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 10301 Invalid, 3759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:35:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7046 states. [2022-01-28 12:35:25,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7046 to 4890. [2022-01-28 12:35:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4890 states, 4887 states have (on average 2.0478821362799264) internal successors, (10008), 4889 states have internal predecessors, (10008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 10008 transitions. [2022-01-28 12:35:25,597 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 10008 transitions. Word has length 99 [2022-01-28 12:35:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:25,597 INFO L470 AbstractCegarLoop]: Abstraction has 4890 states and 10008 transitions. [2022-01-28 12:35:25,597 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) [2022-01-28 12:35:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 10008 transitions. [2022-01-28 12:35:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:25,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:25,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:25,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-28 12:35:25,601 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)] === [2022-01-28 12:35:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash -41375983, now seen corresponding path program 96 times [2022-01-28 12:35:25,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:25,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708757678] [2022-01-28 12:35:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:25,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:26,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708757678] [2022-01-28 12:35:26,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708757678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:26,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:26,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:35:26,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362047164] [2022-01-28 12:35:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:26,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:35:26,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:35:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:35:26,351 INFO L87 Difference]: Start difference. First operand 4890 states and 10008 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:30,413 INFO L93 Difference]: Finished difference Result 7975 states and 16410 transitions. [2022-01-28 12:35:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:35:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:35:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:30,423 INFO L225 Difference]: With dead ends: 7975 [2022-01-28 12:35:30,423 INFO L226 Difference]: Without dead ends: 7975 [2022-01-28 12:35:30,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:35:30,424 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1855 mSDsluCounter, 10462 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 11028 SdHoareTripleChecker+Invalid, 4508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:30,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 11028 Invalid, 4508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4462 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:35:30,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2022-01-28 12:35:30,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 5201. [2022-01-28 12:35:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5198 states have (on average 2.0555983070411696) internal successors, (10685), 5200 states have internal predecessors, (10685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 10685 transitions. [2022-01-28 12:35:30,487 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 10685 transitions. Word has length 99 [2022-01-28 12:35:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:30,488 INFO L470 AbstractCegarLoop]: Abstraction has 5201 states and 10685 transitions. [2022-01-28 12:35:30,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 10685 transitions. [2022-01-28 12:35:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:30,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:30,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:30,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-28 12:35:30,492 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)] === [2022-01-28 12:35:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1060689997, now seen corresponding path program 97 times [2022-01-28 12:35:30,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:30,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463255970] [2022-01-28 12:35:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:30,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:31,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:31,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463255970] [2022-01-28 12:35:31,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463255970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:31,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:31,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:35:31,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227483270] [2022-01-28 12:35:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:31,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:35:31,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:35:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1238, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:35:31,238 INFO L87 Difference]: Start difference. First operand 5201 states and 10685 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) [2022-01-28 12:35:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:36,355 INFO L93 Difference]: Finished difference Result 10215 states and 21054 transitions. [2022-01-28 12:35:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:35:36,355 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 [2022-01-28 12:35:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:36,368 INFO L225 Difference]: With dead ends: 10215 [2022-01-28 12:35:36,368 INFO L226 Difference]: Without dead ends: 10215 [2022-01-28 12:35:36,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1413, Invalid=7143, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:35:36,369 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1922 mSDsluCounter, 10709 mSDsCounter, 0 mSdLazyCounter, 4749 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 11279 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 4749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:36,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 11279 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 4749 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:35:36,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10215 states. [2022-01-28 12:35:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10215 to 5098. [2022-01-28 12:35:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5098 states, 5095 states have (on average 2.0506378802747793) internal successors, (10448), 5097 states have internal predecessors, (10448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 10448 transitions. [2022-01-28 12:35:36,451 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 10448 transitions. Word has length 99 [2022-01-28 12:35:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:36,452 INFO L470 AbstractCegarLoop]: Abstraction has 5098 states and 10448 transitions. [2022-01-28 12:35:36,452 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) [2022-01-28 12:35:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 10448 transitions. [2022-01-28 12:35:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:36,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:36,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:36,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-28 12:35:36,456 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)] === [2022-01-28 12:35:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1589629555, now seen corresponding path program 98 times [2022-01-28 12:35:36,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:36,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514742511] [2022-01-28 12:35:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:36,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:37,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:37,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514742511] [2022-01-28 12:35:37,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514742511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:37,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:37,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:35:37,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176262690] [2022-01-28 12:35:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:37,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:35:37,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:35:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:35:37,731 INFO L87 Difference]: Start difference. First operand 5098 states and 10448 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) [2022-01-28 12:35:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:44,075 INFO L93 Difference]: Finished difference Result 10252 states and 21113 transitions. [2022-01-28 12:35:44,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:35:44,075 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 [2022-01-28 12:35:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:44,088 INFO L225 Difference]: With dead ends: 10252 [2022-01-28 12:35:44,088 INFO L226 Difference]: Without dead ends: 10252 [2022-01-28 12:35:44,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1409, Invalid=7147, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:35:44,089 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1695 mSDsluCounter, 13735 mSDsCounter, 0 mSdLazyCounter, 5632 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 14459 SdHoareTripleChecker+Invalid, 5687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 5632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:44,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1695 Valid, 14459 Invalid, 5687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 5632 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-28 12:35:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10252 states. [2022-01-28 12:35:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10252 to 4948. [2022-01-28 12:35:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4945 states have (on average 2.0487360970677453) internal successors, (10131), 4947 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 10131 transitions. [2022-01-28 12:35:44,163 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 10131 transitions. Word has length 99 [2022-01-28 12:35:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:44,163 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 10131 transitions. [2022-01-28 12:35:44,163 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) [2022-01-28 12:35:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 10131 transitions. [2022-01-28 12:35:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:44,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:44,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:44,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-28 12:35:44,167 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)] === [2022-01-28 12:35:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash 851513067, now seen corresponding path program 99 times [2022-01-28 12:35:44,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:44,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122133437] [2022-01-28 12:35:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:44,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:45,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:45,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122133437] [2022-01-28 12:35:45,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122133437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:45,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:45,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:35:45,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616072930] [2022-01-28 12:35:45,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:45,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:35:45,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:45,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:35:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:35:45,273 INFO L87 Difference]: Start difference. First operand 4948 states and 10131 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) [2022-01-28 12:35:50,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:50,105 INFO L93 Difference]: Finished difference Result 8676 states and 17847 transitions. [2022-01-28 12:35:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:35:50,105 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 [2022-01-28 12:35:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:50,115 INFO L225 Difference]: With dead ends: 8676 [2022-01-28 12:35:50,115 INFO L226 Difference]: Without dead ends: 8676 [2022-01-28 12:35:50,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:35:50,115 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1589 mSDsluCounter, 9156 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 9718 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:50,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 9718 Invalid, 3620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:35:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8676 states. [2022-01-28 12:35:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8676 to 4908. [2022-01-28 12:35:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4905 states have (on average 2.048114169215087) internal successors, (10046), 4907 states have internal predecessors, (10046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 10046 transitions. [2022-01-28 12:35:50,185 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 10046 transitions. Word has length 99 [2022-01-28 12:35:50,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:50,185 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 10046 transitions. [2022-01-28 12:35:50,185 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) [2022-01-28 12:35:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 10046 transitions. [2022-01-28 12:35:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:50,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:50,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:50,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-28 12:35:50,189 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)] === [2022-01-28 12:35:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -134019495, now seen corresponding path program 100 times [2022-01-28 12:35:50,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:50,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076493450] [2022-01-28 12:35:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:50,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:50,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:50,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076493450] [2022-01-28 12:35:50,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076493450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:50,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:50,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:35:50,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313911710] [2022-01-28 12:35:50,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:50,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:35:50,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:50,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:35:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:35:50,953 INFO L87 Difference]: Start difference. First operand 4908 states and 10046 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) [2022-01-28 12:35:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:54,988 INFO L93 Difference]: Finished difference Result 9266 states and 19057 transitions. [2022-01-28 12:35:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:35:54,988 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 [2022-01-28 12:35:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:54,998 INFO L225 Difference]: With dead ends: 9266 [2022-01-28 12:35:54,999 INFO L226 Difference]: Without dead ends: 9266 [2022-01-28 12:35:54,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:35:54,999 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1662 mSDsluCounter, 9829 mSDsCounter, 0 mSdLazyCounter, 3783 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 10437 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:54,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 10437 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3783 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:35:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9266 states. [2022-01-28 12:35:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9266 to 4910. [2022-01-28 12:35:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4910 states, 4907 states have (on average 2.04809455879356) internal successors, (10050), 4909 states have internal predecessors, (10050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 10050 transitions. [2022-01-28 12:35:55,073 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 10050 transitions. Word has length 99 [2022-01-28 12:35:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:55,073 INFO L470 AbstractCegarLoop]: Abstraction has 4910 states and 10050 transitions. [2022-01-28 12:35:55,073 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) [2022-01-28 12:35:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 10050 transitions. [2022-01-28 12:35:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:55,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:55,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:55,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-28 12:35:55,078 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)] === [2022-01-28 12:35:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1073149929, now seen corresponding path program 101 times [2022-01-28 12:35:55,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:55,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307936687] [2022-01-28 12:35:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:55,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:35:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:35:55,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:35:55,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307936687] [2022-01-28 12:35:55,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307936687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:35:55,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:35:55,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:35:55,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624512438] [2022-01-28 12:35:55,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:35:55,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:35:55,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:35:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:35:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:35:55,648 INFO L87 Difference]: Start difference. First operand 4910 states and 10050 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) [2022-01-28 12:35:59,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:35:59,629 INFO L93 Difference]: Finished difference Result 7376 states and 15151 transitions. [2022-01-28 12:35:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:35:59,629 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 [2022-01-28 12:35:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:35:59,638 INFO L225 Difference]: With dead ends: 7376 [2022-01-28 12:35:59,638 INFO L226 Difference]: Without dead ends: 7376 [2022-01-28 12:35:59,639 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 [2022-01-28 12:35:59,639 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1528 mSDsluCounter, 9728 mSDsCounter, 0 mSdLazyCounter, 3844 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 10304 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:35:59,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 10304 Invalid, 3879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3844 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:35:59,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2022-01-28 12:35:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 4892. [2022-01-28 12:35:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 4889 states have (on average 2.047862548578441) internal successors, (10012), 4891 states have internal predecessors, (10012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:35:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 10012 transitions. [2022-01-28 12:35:59,717 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 10012 transitions. Word has length 99 [2022-01-28 12:35:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:35:59,717 INFO L470 AbstractCegarLoop]: Abstraction has 4892 states and 10012 transitions. [2022-01-28 12:35:59,717 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) [2022-01-28 12:35:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 10012 transitions. [2022-01-28 12:35:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:35:59,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:35:59,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:35:59,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-28 12:35:59,721 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)] === [2022-01-28 12:35:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:35:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1611966417, now seen corresponding path program 102 times [2022-01-28 12:35:59,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:35:59,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247048916] [2022-01-28 12:35:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:35:59,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:35:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:00,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:00,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247048916] [2022-01-28 12:36:00,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247048916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:00,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:00,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:36:00,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141383952] [2022-01-28 12:36:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:00,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:36:00,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:00,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:36:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1241, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:36:00,818 INFO L87 Difference]: Start difference. First operand 4892 states and 10012 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) [2022-01-28 12:36:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:07,481 INFO L93 Difference]: Finished difference Result 8099 states and 16666 transitions. [2022-01-28 12:36:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:36:07,482 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 [2022-01-28 12:36:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:07,493 INFO L225 Difference]: With dead ends: 8099 [2022-01-28 12:36:07,493 INFO L226 Difference]: Without dead ends: 8099 [2022-01-28 12:36:07,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1402, Invalid=7154, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:36:07,494 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 2001 mSDsluCounter, 10174 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 10738 SdHoareTripleChecker+Invalid, 4513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:07,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 10738 Invalid, 4513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 4460 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:36:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2022-01-28 12:36:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 5157. [2022-01-28 12:36:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5154 states have (on average 2.0523864959254947) internal successors, (10578), 5156 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 10578 transitions. [2022-01-28 12:36:07,570 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 10578 transitions. Word has length 99 [2022-01-28 12:36:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:07,570 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 10578 transitions. [2022-01-28 12:36:07,570 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) [2022-01-28 12:36:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 10578 transitions. [2022-01-28 12:36:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:07,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:07,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:07,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-28 12:36:07,575 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)] === [2022-01-28 12:36:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:07,575 INFO L85 PathProgramCache]: Analyzing trace with hash -509900437, now seen corresponding path program 103 times [2022-01-28 12:36:07,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:07,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797783127] [2022-01-28 12:36:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:07,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:08,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:08,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797783127] [2022-01-28 12:36:08,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797783127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:08,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:08,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:36:08,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101128818] [2022-01-28 12:36:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:08,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:36:08,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:36:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1242, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:36:08,349 INFO L87 Difference]: Start difference. First operand 5157 states and 10578 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) [2022-01-28 12:36:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:13,034 INFO L93 Difference]: Finished difference Result 10064 states and 20723 transitions. [2022-01-28 12:36:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:36:13,034 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 [2022-01-28 12:36:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:13,049 INFO L225 Difference]: With dead ends: 10064 [2022-01-28 12:36:13,049 INFO L226 Difference]: Without dead ends: 10064 [2022-01-28 12:36:13,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1409, Invalid=7147, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:36:13,050 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 2178 mSDsluCounter, 9789 mSDsCounter, 0 mSdLazyCounter, 4192 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 10357 SdHoareTripleChecker+Invalid, 4255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:13,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2178 Valid, 10357 Invalid, 4255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4192 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:36:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-01-28 12:36:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 5195. [2022-01-28 12:36:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5192 states have (on average 2.051617873651772) internal successors, (10652), 5194 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 10652 transitions. [2022-01-28 12:36:13,140 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 10652 transitions. Word has length 99 [2022-01-28 12:36:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:13,140 INFO L470 AbstractCegarLoop]: Abstraction has 5195 states and 10652 transitions. [2022-01-28 12:36:13,141 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) [2022-01-28 12:36:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 10652 transitions. [2022-01-28 12:36:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:13,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:13,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:13,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-28 12:36:13,145 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)] === [2022-01-28 12:36:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1134747307, now seen corresponding path program 104 times [2022-01-28 12:36:13,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:13,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445187262] [2022-01-28 12:36:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:13,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:13,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:13,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445187262] [2022-01-28 12:36:13,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445187262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:13,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:13,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:36:13,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242193241] [2022-01-28 12:36:13,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:13,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:36:13,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:36:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:36:13,932 INFO L87 Difference]: Start difference. First operand 5195 states and 10652 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) [2022-01-28 12:36:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:19,804 INFO L93 Difference]: Finished difference Result 10101 states and 20782 transitions. [2022-01-28 12:36:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:36:19,804 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 [2022-01-28 12:36:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:19,816 INFO L225 Difference]: With dead ends: 10101 [2022-01-28 12:36:19,816 INFO L226 Difference]: Without dead ends: 10101 [2022-01-28 12:36:19,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1627 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1406, Invalid=7150, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:36:19,817 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1760 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 5321 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 13396 SdHoareTripleChecker+Invalid, 5374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 5321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:19,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 13396 Invalid, 5374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 5321 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-28 12:36:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10101 states. [2022-01-28 12:36:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10101 to 5045. [2022-01-28 12:36:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5045 states, 5042 states have (on average 2.049781832606109) internal successors, (10335), 5044 states have internal predecessors, (10335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 10335 transitions. [2022-01-28 12:36:19,899 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 10335 transitions. Word has length 99 [2022-01-28 12:36:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:19,899 INFO L470 AbstractCegarLoop]: Abstraction has 5045 states and 10335 transitions. [2022-01-28 12:36:19,900 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) [2022-01-28 12:36:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 10335 transitions. [2022-01-28 12:36:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:19,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:19,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:19,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-28 12:36:19,903 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)] === [2022-01-28 12:36:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -719077367, now seen corresponding path program 105 times [2022-01-28 12:36:19,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:19,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976327306] [2022-01-28 12:36:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:19,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:20,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:20,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976327306] [2022-01-28 12:36:20,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976327306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:20,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:20,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:36:20,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139484801] [2022-01-28 12:36:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:20,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:36:20,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:36:20,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:36:20,432 INFO L87 Difference]: Start difference. First operand 5045 states and 10335 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) [2022-01-28 12:36:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:24,686 INFO L93 Difference]: Finished difference Result 8504 states and 17476 transitions. [2022-01-28 12:36:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:36:24,686 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 [2022-01-28 12:36:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:24,698 INFO L225 Difference]: With dead ends: 8504 [2022-01-28 12:36:24,698 INFO L226 Difference]: Without dead ends: 8504 [2022-01-28 12:36:24,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:36:24,699 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1562 mSDsluCounter, 8831 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 9391 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:24,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 9391 Invalid, 3519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:36:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8504 states. [2022-01-28 12:36:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8504 to 4889. [2022-01-28 12:36:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4889 states, 4886 states have (on average 2.0478919361440853) internal successors, (10006), 4888 states have internal predecessors, (10006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4889 states to 4889 states and 10006 transitions. [2022-01-28 12:36:24,796 INFO L78 Accepts]: Start accepts. Automaton has 4889 states and 10006 transitions. Word has length 99 [2022-01-28 12:36:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:24,796 INFO L470 AbstractCegarLoop]: Abstraction has 4889 states and 10006 transitions. [2022-01-28 12:36:24,796 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) [2022-01-28 12:36:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4889 states and 10006 transitions. [2022-01-28 12:36:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:24,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:24,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:24,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-28 12:36:24,800 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)] === [2022-01-28 12:36:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash -795570981, now seen corresponding path program 106 times [2022-01-28 12:36:24,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:24,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505197621] [2022-01-28 12:36:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:24,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:25,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:25,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505197621] [2022-01-28 12:36:25,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505197621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:25,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:25,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:36:25,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912811414] [2022-01-28 12:36:25,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:25,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:36:25,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:25,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:36:25,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:36:25,649 INFO L87 Difference]: Start difference. First operand 4889 states and 10006 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) [2022-01-28 12:36:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:30,501 INFO L93 Difference]: Finished difference Result 6948 states and 14273 transitions. [2022-01-28 12:36:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:36:30,501 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 [2022-01-28 12:36:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:30,509 INFO L225 Difference]: With dead ends: 6948 [2022-01-28 12:36:30,509 INFO L226 Difference]: Without dead ends: 6948 [2022-01-28 12:36:30,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:36:30,510 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1524 mSDsluCounter, 9441 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 9997 SdHoareTripleChecker+Invalid, 3730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:30,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 9997 Invalid, 3730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:36:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6948 states. [2022-01-28 12:36:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6948 to 4911. [2022-01-28 12:36:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4911 states, 4908 states have (on average 2.048084759576202) internal successors, (10052), 4910 states have internal predecessors, (10052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4911 states to 4911 states and 10052 transitions. [2022-01-28 12:36:30,569 INFO L78 Accepts]: Start accepts. Automaton has 4911 states and 10052 transitions. Word has length 99 [2022-01-28 12:36:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:30,569 INFO L470 AbstractCegarLoop]: Abstraction has 4911 states and 10052 transitions. [2022-01-28 12:36:30,569 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) [2022-01-28 12:36:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4911 states and 10052 transitions. [2022-01-28 12:36:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:30,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:30,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:30,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-28 12:36:30,573 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)] === [2022-01-28 12:36:30,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:30,573 INFO L85 PathProgramCache]: Analyzing trace with hash -888214493, now seen corresponding path program 107 times [2022-01-28 12:36:30,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:30,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614737502] [2022-01-28 12:36:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:30,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:31,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:31,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614737502] [2022-01-28 12:36:31,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614737502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:31,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:31,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:36:31,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992922096] [2022-01-28 12:36:31,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:31,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:36:31,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:36:31,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:36:31,350 INFO L87 Difference]: Start difference. First operand 4911 states and 10052 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) [2022-01-28 12:36:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:35,234 INFO L93 Difference]: Finished difference Result 8895 states and 18276 transitions. [2022-01-28 12:36:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:36:35,235 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 [2022-01-28 12:36:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:35,246 INFO L225 Difference]: With dead ends: 8895 [2022-01-28 12:36:35,246 INFO L226 Difference]: Without dead ends: 8895 [2022-01-28 12:36:35,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:36:35,247 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1691 mSDsluCounter, 10437 mSDsCounter, 0 mSdLazyCounter, 3978 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 11039 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:35,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 11039 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3978 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:36:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8895 states. [2022-01-28 12:36:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8895 to 4913. [2022-01-28 12:36:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4913 states, 4910 states have (on average 2.0480651731160897) internal successors, (10056), 4912 states have internal predecessors, (10056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4913 states to 4913 states and 10056 transitions. [2022-01-28 12:36:35,317 INFO L78 Accepts]: Start accepts. Automaton has 4913 states and 10056 transitions. Word has length 99 [2022-01-28 12:36:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:35,317 INFO L470 AbstractCegarLoop]: Abstraction has 4913 states and 10056 transitions. [2022-01-28 12:36:35,317 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) [2022-01-28 12:36:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4913 states and 10056 transitions. [2022-01-28 12:36:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:35,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:35,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:35,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-28 12:36:35,321 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)] === [2022-01-28 12:36:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash 318954931, now seen corresponding path program 108 times [2022-01-28 12:36:35,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:35,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066970047] [2022-01-28 12:36:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:35,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:36,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:36,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066970047] [2022-01-28 12:36:36,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066970047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:36,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:36,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:36:36,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497783817] [2022-01-28 12:36:36,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:36,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:36:36,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:36:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:36:36,188 INFO L87 Difference]: Start difference. First operand 4913 states and 10056 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) [2022-01-28 12:36:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:41,383 INFO L93 Difference]: Finished difference Result 7005 states and 14370 transitions. [2022-01-28 12:36:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:36:41,383 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 [2022-01-28 12:36:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:41,392 INFO L225 Difference]: With dead ends: 7005 [2022-01-28 12:36:41,392 INFO L226 Difference]: Without dead ends: 7005 [2022-01-28 12:36:41,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-01-28 12:36:41,393 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1659 mSDsluCounter, 10404 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 10974 SdHoareTripleChecker+Invalid, 4118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:41,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 10974 Invalid, 4118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4076 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-28 12:36:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2022-01-28 12:36:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 4895. [2022-01-28 12:36:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4895 states, 4892 states have (on average 2.0478331970564185) internal successors, (10018), 4894 states have internal predecessors, (10018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4895 states to 4895 states and 10018 transitions. [2022-01-28 12:36:41,458 INFO L78 Accepts]: Start accepts. Automaton has 4895 states and 10018 transitions. Word has length 99 [2022-01-28 12:36:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:41,458 INFO L470 AbstractCegarLoop]: Abstraction has 4895 states and 10018 transitions. [2022-01-28 12:36:41,458 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) [2022-01-28 12:36:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4895 states and 10018 transitions. [2022-01-28 12:36:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:41,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:41,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:41,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-28 12:36:41,462 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)] === [2022-01-28 12:36:41,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:41,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1928805881, now seen corresponding path program 109 times [2022-01-28 12:36:41,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:41,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423949318] [2022-01-28 12:36:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:41,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:42,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:42,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423949318] [2022-01-28 12:36:42,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423949318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:42,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:42,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-01-28 12:36:42,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333773814] [2022-01-28 12:36:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:42,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-28 12:36:42,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-28 12:36:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1173, Unknown=0, NotChecked=0, Total=1260 [2022-01-28 12:36:42,443 INFO L87 Difference]: Start difference. First operand 4895 states and 10018 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:47,148 INFO L93 Difference]: Finished difference Result 7706 states and 15833 transitions. [2022-01-28 12:36:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-28 12:36:47,148 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-28 12:36:47,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:47,159 INFO L225 Difference]: With dead ends: 7706 [2022-01-28 12:36:47,159 INFO L226 Difference]: Without dead ends: 7706 [2022-01-28 12:36:47,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1129, Invalid=5677, Unknown=0, NotChecked=0, Total=6806 [2022-01-28 12:36:47,160 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1882 mSDsluCounter, 9016 mSDsCounter, 0 mSdLazyCounter, 3667 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 9580 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:47,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 9580 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3667 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:36:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-01-28 12:36:47,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 5160. [2022-01-28 12:36:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5160 states, 5157 states have (on average 2.0523560209424083) internal successors, (10584), 5159 states have internal predecessors, (10584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 10584 transitions. [2022-01-28 12:36:47,233 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 10584 transitions. Word has length 99 [2022-01-28 12:36:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:47,233 INFO L470 AbstractCegarLoop]: Abstraction has 5160 states and 10584 transitions. [2022-01-28 12:36:47,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 10584 transitions. [2022-01-28 12:36:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:47,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:47,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:47,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-28 12:36:47,238 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)] === [2022-01-28 12:36:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1264095435, now seen corresponding path program 110 times [2022-01-28 12:36:47,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:47,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180485508] [2022-01-28 12:36:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:47,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:47,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:47,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180485508] [2022-01-28 12:36:47,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180485508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:47,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:47,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:36:47,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938927114] [2022-01-28 12:36:47,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:47,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:36:47,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:36:47,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:36:47,771 INFO L87 Difference]: Start difference. First operand 5160 states and 10584 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) [2022-01-28 12:36:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:51,087 INFO L93 Difference]: Finished difference Result 8485 states and 17439 transitions. [2022-01-28 12:36:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:36:51,087 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 [2022-01-28 12:36:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:51,101 INFO L225 Difference]: With dead ends: 8485 [2022-01-28 12:36:51,101 INFO L226 Difference]: Without dead ends: 8485 [2022-01-28 12:36:51,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:36:51,102 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1517 mSDsluCounter, 9515 mSDsCounter, 0 mSdLazyCounter, 3929 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 10075 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:51,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 10075 Invalid, 3962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3929 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:36:51,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8485 states. [2022-01-28 12:36:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8485 to 4893. [2022-01-28 12:36:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4893 states, 4890 states have (on average 2.0478527607361965) internal successors, (10014), 4892 states have internal predecessors, (10014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4893 states to 4893 states and 10014 transitions. [2022-01-28 12:36:51,183 INFO L78 Accepts]: Start accepts. Automaton has 4893 states and 10014 transitions. Word has length 99 [2022-01-28 12:36:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:51,183 INFO L470 AbstractCegarLoop]: Abstraction has 4893 states and 10014 transitions. [2022-01-28 12:36:51,183 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) [2022-01-28 12:36:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4893 states and 10014 transitions. [2022-01-28 12:36:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:51,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:51,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:51,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-28 12:36:51,188 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)] === [2022-01-28 12:36:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash -253644005, now seen corresponding path program 111 times [2022-01-28 12:36:51,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:51,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702052773] [2022-01-28 12:36:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:51,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:51,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:51,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702052773] [2022-01-28 12:36:51,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702052773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:51,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:51,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:36:51,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355117445] [2022-01-28 12:36:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:51,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:36:51,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:36:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1241, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:36:51,967 INFO L87 Difference]: Start difference. First operand 4893 states and 10014 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) [2022-01-28 12:36:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:36:58,310 INFO L93 Difference]: Finished difference Result 7726 states and 15881 transitions. [2022-01-28 12:36:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:36:58,310 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 [2022-01-28 12:36:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:36:58,320 INFO L225 Difference]: With dead ends: 7726 [2022-01-28 12:36:58,321 INFO L226 Difference]: Without dead ends: 7726 [2022-01-28 12:36:58,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1402, Invalid=7154, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:36:58,322 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1957 mSDsluCounter, 10752 mSDsCounter, 0 mSdLazyCounter, 4594 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 11309 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-28 12:36:58,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 11309 Invalid, 4644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4594 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-28 12:36:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2022-01-28 12:36:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 5192. [2022-01-28 12:36:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 5189 states have (on average 2.0520331470418194) internal successors, (10648), 5191 states have internal predecessors, (10648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:36:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 10648 transitions. [2022-01-28 12:36:58,401 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 10648 transitions. Word has length 99 [2022-01-28 12:36:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:36:58,401 INFO L470 AbstractCegarLoop]: Abstraction has 5192 states and 10648 transitions. [2022-01-28 12:36:58,401 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) [2022-01-28 12:36:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 10648 transitions. [2022-01-28 12:36:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:36:58,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:36:58,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:36:58,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-28 12:36:58,406 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)] === [2022-01-28 12:36:58,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:36:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash 848421975, now seen corresponding path program 112 times [2022-01-28 12:36:58,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:36:58,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97677002] [2022-01-28 12:36:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:36:58,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:36:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:36:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:36:59,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:36:59,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97677002] [2022-01-28 12:36:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97677002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:36:59,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:36:59,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-01-28 12:36:59,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015447411] [2022-01-28 12:36:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:36:59,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 12:36:59,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:36:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 12:36:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1242, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 12:36:59,535 INFO L87 Difference]: Start difference. First operand 5192 states and 10648 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) [2022-01-28 12:37:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:37:05,208 INFO L93 Difference]: Finished difference Result 9691 states and 19938 transitions. [2022-01-28 12:37:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-28 12:37:05,208 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 [2022-01-28 12:37:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:37:05,221 INFO L225 Difference]: With dead ends: 9691 [2022-01-28 12:37:05,221 INFO L226 Difference]: Without dead ends: 9691 [2022-01-28 12:37:05,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1409, Invalid=7147, Unknown=0, NotChecked=0, Total=8556 [2022-01-28 12:37:05,222 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1826 mSDsluCounter, 10940 mSDsCounter, 0 mSdLazyCounter, 4632 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 11501 SdHoareTripleChecker+Invalid, 4686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 4632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:05,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1826 Valid, 11501 Invalid, 4686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 4632 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-28 12:37:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9691 states. [2022-01-28 12:37:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9691 to 5230. [2022-01-28 12:37:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5227 states have (on average 2.051272240290798) internal successors, (10722), 5229 states have internal predecessors, (10722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:37:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 10722 transitions. [2022-01-28 12:37:05,308 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 10722 transitions. Word has length 99 [2022-01-28 12:37:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:37:05,308 INFO L470 AbstractCegarLoop]: Abstraction has 5230 states and 10722 transitions. [2022-01-28 12:37:05,309 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) [2022-01-28 12:37:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 10722 transitions. [2022-01-28 12:37:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:37:05,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:37:05,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:37:05,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-28 12:37:05,313 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)] === [2022-01-28 12:37:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:37:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1801897577, now seen corresponding path program 113 times [2022-01-28 12:37:05,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:37:05,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423629483] [2022-01-28 12:37:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:37:05,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:37:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:37:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:37:05,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:37:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423629483] [2022-01-28 12:37:05,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423629483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:37:05,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:37:05,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:37:05,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959928564] [2022-01-28 12:37:05,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:37:05,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:37:05,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:37:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:37:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:37:05,858 INFO L87 Difference]: Start difference. First operand 5230 states and 10722 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) [2022-01-28 12:37:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:37:09,128 INFO L93 Difference]: Finished difference Result 8146 states and 16723 transitions. [2022-01-28 12:37:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:37:09,128 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 [2022-01-28 12:37:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:37:09,138 INFO L225 Difference]: With dead ends: 8146 [2022-01-28 12:37:09,139 INFO L226 Difference]: Without dead ends: 8146 [2022-01-28 12:37:09,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:37:09,139 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1663 mSDsluCounter, 9078 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 9631 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:09,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 9631 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-28 12:37:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-01-28 12:37:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 4887. [2022-01-28 12:37:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4884 states have (on average 2.0479115479115477) internal successors, (10002), 4886 states have internal predecessors, (10002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:37:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 10002 transitions. [2022-01-28 12:37:09,209 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 10002 transitions. Word has length 99 [2022-01-28 12:37:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:37:09,209 INFO L470 AbstractCegarLoop]: Abstraction has 4887 states and 10002 transitions. [2022-01-28 12:37:09,209 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) [2022-01-28 12:37:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 10002 transitions. [2022-01-28 12:37:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:37:09,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:37:09,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:37:09,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-28 12:37:09,213 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)] === [2022-01-28 12:37:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:37:09,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1362747807, now seen corresponding path program 114 times [2022-01-28 12:37:09,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:37:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059685757] [2022-01-28 12:37:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:37:09,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:37:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:37:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:37:09,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:37:09,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059685757] [2022-01-28 12:37:09,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059685757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:37:09,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:37:09,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:37:09,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137083148] [2022-01-28 12:37:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:37:09,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:37:09,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:37:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:37:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:37:09,797 INFO L87 Difference]: Start difference. First operand 4887 states and 10002 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) [2022-01-28 12:37:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:37:13,065 INFO L93 Difference]: Finished difference Result 7076 states and 14532 transitions. [2022-01-28 12:37:13,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:37:13,065 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 [2022-01-28 12:37:13,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:37:13,075 INFO L225 Difference]: With dead ends: 7076 [2022-01-28 12:37:13,075 INFO L226 Difference]: Without dead ends: 7076 [2022-01-28 12:37:13,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:37:13,076 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1582 mSDsluCounter, 9179 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 9741 SdHoareTripleChecker+Invalid, 3719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:13,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 9741 Invalid, 3719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:37:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2022-01-28 12:37:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 4917. [2022-01-28 12:37:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4917 states, 4914 states have (on average 2.048229548229548) internal successors, (10065), 4916 states have internal predecessors, (10065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:37:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 10065 transitions. [2022-01-28 12:37:13,139 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 10065 transitions. Word has length 99 [2022-01-28 12:37:13,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:37:13,139 INFO L470 AbstractCegarLoop]: Abstraction has 4917 states and 10065 transitions. [2022-01-28 12:37:13,139 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) [2022-01-28 12:37:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 10065 transitions. [2022-01-28 12:37:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:37:13,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:37:13,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:37:13,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-28 12:37:13,143 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)] === [2022-01-28 12:37:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:37:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1270104295, now seen corresponding path program 115 times [2022-01-28 12:37:13,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:37:13,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951260411] [2022-01-28 12:37:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:37:13,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:37:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:37:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:37:13,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:37:13,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951260411] [2022-01-28 12:37:13,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951260411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:37:13,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:37:13,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:37:13,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002612689] [2022-01-28 12:37:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:37:13,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:37:13,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:37:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:37:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:37:13,669 INFO L87 Difference]: Start difference. First operand 4917 states and 10065 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) [2022-01-28 12:37:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:37:17,224 INFO L93 Difference]: Finished difference Result 9135 states and 18778 transitions. [2022-01-28 12:37:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:37:17,224 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 [2022-01-28 12:37:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:37:17,235 INFO L225 Difference]: With dead ends: 9135 [2022-01-28 12:37:17,235 INFO L226 Difference]: Without dead ends: 9135 [2022-01-28 12:37:17,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-01-28 12:37:17,235 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1536 mSDsluCounter, 11322 mSDsCounter, 0 mSdLazyCounter, 4296 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 11930 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:17,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 11930 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4296 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-28 12:37:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2022-01-28 12:37:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 4919. [2022-01-28 12:37:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4919 states, 4916 states have (on average 2.0482099267697316) internal successors, (10069), 4918 states have internal predecessors, (10069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:37:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4919 states to 4919 states and 10069 transitions. [2022-01-28 12:37:17,306 INFO L78 Accepts]: Start accepts. Automaton has 4919 states and 10069 transitions. Word has length 99 [2022-01-28 12:37:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:37:17,306 INFO L470 AbstractCegarLoop]: Abstraction has 4919 states and 10069 transitions. [2022-01-28 12:37:17,306 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) [2022-01-28 12:37:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4919 states and 10069 transitions. [2022-01-28 12:37:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:37:17,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:37:17,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:37:17,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-28 12:37:17,310 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)] === [2022-01-28 12:37:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:37:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1817693577, now seen corresponding path program 116 times [2022-01-28 12:37:17,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:37:17,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707695281] [2022-01-28 12:37:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:37:17,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:37:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:37:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:37:17,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:37:17,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707695281] [2022-01-28 12:37:17,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707695281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:37:17,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:37:17,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:37:17,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418616296] [2022-01-28 12:37:17,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:37:17,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:37:17,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:37:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:37:17,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:37:17,854 INFO L87 Difference]: Start difference. First operand 4919 states and 10069 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) [2022-01-28 12:37:21,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:37:21,189 INFO L93 Difference]: Finished difference Result 7177 states and 14736 transitions. [2022-01-28 12:37:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:37:21,189 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 [2022-01-28 12:37:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:37:21,202 INFO L225 Difference]: With dead ends: 7177 [2022-01-28 12:37:21,202 INFO L226 Difference]: Without dead ends: 7177 [2022-01-28 12:37:21,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-01-28 12:37:21,204 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1663 mSDsluCounter, 10057 mSDsCounter, 0 mSdLazyCounter, 3946 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 3982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:21,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 10633 Invalid, 3982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3946 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-28 12:37:21,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7177 states. [2022-01-28 12:37:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7177 to 4901. [2022-01-28 12:37:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4901 states, 4898 states have (on average 2.0479787668436096) internal successors, (10031), 4900 states have internal predecessors, (10031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:37:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4901 states to 4901 states and 10031 transitions. [2022-01-28 12:37:21,305 INFO L78 Accepts]: Start accepts. Automaton has 4901 states and 10031 transitions. Word has length 99 [2022-01-28 12:37:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:37:21,306 INFO L470 AbstractCegarLoop]: Abstraction has 4901 states and 10031 transitions. [2022-01-28 12:37:21,306 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) [2022-01-28 12:37:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4901 states and 10031 transitions. [2022-01-28 12:37:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:37:21,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:37:21,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:37:21,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-28 12:37:21,310 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)] === [2022-01-28 12:37:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:37:21,310 INFO L85 PathProgramCache]: Analyzing trace with hash 482050791, now seen corresponding path program 117 times [2022-01-28 12:37:21,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:37:21,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82416947] [2022-01-28 12:37:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:37:21,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:37:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:37:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:37:21,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:37:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82416947] [2022-01-28 12:37:21,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82416947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:37:21,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:37:21,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-28 12:37:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113865213] [2022-01-28 12:37:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:37:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-28 12:37:21,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:37:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-28 12:37:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-01-28 12:37:21,932 INFO L87 Difference]: Start difference. First operand 4901 states and 10031 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) [2022-01-28 12:37:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:37:26,169 INFO L93 Difference]: Finished difference Result 9168 states and 18830 transitions. [2022-01-28 12:37:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-28 12:37:26,188 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 [2022-01-28 12:37:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:37:26,201 INFO L225 Difference]: With dead ends: 9168 [2022-01-28 12:37:26,201 INFO L226 Difference]: Without dead ends: 9168 [2022-01-28 12:37:26,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-01-28 12:37:26,202 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 1679 mSDsluCounter, 11490 mSDsCounter, 0 mSdLazyCounter, 4296 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 12122 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:26,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 12122 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4296 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-28 12:37:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9168 states. [2022-01-28 12:37:26,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9168 to 4902. [2022-01-28 12:37:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4899 states have (on average 2.047968973259849) internal successors, (10033), 4901 states have internal predecessors, (10033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:37:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 10033 transitions. [2022-01-28 12:37:26,380 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 10033 transitions. Word has length 99 [2022-01-28 12:37:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:37:26,381 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 10033 transitions. [2022-01-28 12:37:26,381 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) [2022-01-28 12:37:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 10033 transitions. [2022-01-28 12:37:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:37:26,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:37:26,390 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] [2022-01-28 12:37:26,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-28 12:37:26,390 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)] === [2022-01-28 12:37:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:37:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash 460857719, now seen corresponding path program 118 times [2022-01-28 12:37:26,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:37:26,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812962550] [2022-01-28 12:37:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:37:26,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:37:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:37:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:37:27,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:37:27,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812962550] [2022-01-28 12:37:27,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812962550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:37:27,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:37:27,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:37:27,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929091708] [2022-01-28 12:37:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:37:27,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:37:27,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:37:27,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:37:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:37:27,119 INFO L87 Difference]: Start difference. First operand 4902 states and 10033 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) [2022-01-28 12:37:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 12:37:32,004 INFO L93 Difference]: Finished difference Result 8191 states and 16809 transitions. [2022-01-28 12:37:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-28 12:37:32,004 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 [2022-01-28 12:37:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 12:37:32,016 INFO L225 Difference]: With dead ends: 8191 [2022-01-28 12:37:32,016 INFO L226 Difference]: Without dead ends: 8191 [2022-01-28 12:37:32,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-01-28 12:37:32,017 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1794 mSDsluCounter, 10763 mSDsCounter, 0 mSdLazyCounter, 4064 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 11363 SdHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:32,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1794 Valid, 11363 Invalid, 4104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4064 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-28 12:37:32,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8191 states. [2022-01-28 12:37:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8191 to 4904. [2022-01-28 12:37:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4904 states, 4901 states have (on average 2.0479493980820243) internal successors, (10037), 4903 states have internal predecessors, (10037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 12:37:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 10037 transitions. [2022-01-28 12:37:32,115 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 10037 transitions. Word has length 99 [2022-01-28 12:37:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 12:37:32,115 INFO L470 AbstractCegarLoop]: Abstraction has 4904 states and 10037 transitions. [2022-01-28 12:37:32,116 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) [2022-01-28 12:37:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 10037 transitions. [2022-01-28 12:37:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-28 12:37:32,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 12:37:32,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 12:37:32,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-28 12:37:32,119 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)] === [2022-01-28 12:37:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 12:37:32,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1373119753, now seen corresponding path program 119 times [2022-01-28 12:37:32,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 12:37:32,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872487689] [2022-01-28 12:37:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 12:37:32,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 12:37:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 12:37:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 12:37:32,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 12:37:32,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872487689] [2022-01-28 12:37:32,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872487689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 12:37:32,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 12:37:32,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-28 12:37:32,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019014503] [2022-01-28 12:37:32,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 12:37:32,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 12:37:32,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 12:37:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 12:37:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 12:37:32,677 INFO L87 Difference]: Start difference. First operand 4904 states and 10037 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) Received shutdown request... [2022-01-28 12:37:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-28 12:37:35,826 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 [2022-01-28 12:37:35,827 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 1547 mSDsluCounter, 8930 mSDsCounter, 0 mSdLazyCounter, 3320 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 9449 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-28 12:37:35,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 9449 Invalid, 3361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3320 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-28 12:37:35,827 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-01-28 12:37:35,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-28 12:37:35,828 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4904states) and FLOYD_HOARE automaton (currently 46 states, 33 states before enhancement),while ReachableStatesComputation was computing reachable states (5596 states constructed, input type IntersectNwa). [2022-01-28 12:37:35,830 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-01-28 12:37:35,830 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-01-28 12:37:35,830 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-01-28 12:37:35,830 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 7 remaining) [2022-01-28 12:37:35,830 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-01-28 12:37:35,830 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-01-28 12:37:35,832 INFO L732 BasicCegarLoop]: Path program histogram: [119, 33, 1, 1, 1] [2022-01-28 12:37:35,835 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-28 12:37:35,835 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 12:37:35,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:37:35 BasicIcfg [2022-01-28 12:37:35,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 12:37:35,837 INFO L158 Benchmark]: Toolchain (without parser) took 856458.52ms. Allocated memory was 206.6MB in the beginning and 761.3MB in the end (delta: 554.7MB). Free memory was 155.5MB in the beginning and 357.2MB in the end (delta: -201.7MB). Peak memory consumption was 353.6MB. Max. memory is 8.0GB. [2022-01-28 12:37:35,837 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory was 173.5MB in the beginning and 173.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 12:37:35,837 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.71ms. Allocated memory is still 206.6MB. Free memory was 155.3MB in the beginning and 169.0MB in the end (delta: -13.7MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-01-28 12:37:35,837 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.25ms. Allocated memory is still 206.6MB. Free memory was 169.0MB in the beginning and 166.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-28 12:37:35,837 INFO L158 Benchmark]: Boogie Preprocessor took 29.10ms. Allocated memory is still 206.6MB. Free memory was 166.4MB in the beginning and 164.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-28 12:37:35,837 INFO L158 Benchmark]: RCFGBuilder took 372.00ms. Allocated memory is still 206.6MB. Free memory was 164.8MB in the beginning and 149.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-28 12:37:35,837 INFO L158 Benchmark]: TraceAbstraction took 855631.33ms. Allocated memory was 206.6MB in the beginning and 761.3MB in the end (delta: 554.7MB). Free memory was 149.1MB in the beginning and 357.2MB in the end (delta: -208.1MB). Peak memory consumption was 347.2MB. Max. memory is 8.0GB. [2022-01-28 12:37:35,838 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 206.6MB. Free memory was 173.5MB in the beginning and 173.4MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 370.71ms. Allocated memory is still 206.6MB. Free memory was 155.3MB in the beginning and 169.0MB in the end (delta: -13.7MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.25ms. Allocated memory is still 206.6MB. Free memory was 169.0MB in the beginning and 166.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.10ms. Allocated memory is still 206.6MB. Free memory was 166.4MB in the beginning and 164.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 372.00ms. Allocated memory is still 206.6MB. Free memory was 164.8MB in the beginning and 149.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 855631.33ms. Allocated memory was 206.6MB in the beginning and 761.3MB in the end (delta: 554.7MB). Free memory was 149.1MB in the beginning and 357.2MB in the end (delta: -208.1MB). Peak memory consumption was 347.2MB. 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 (4904states) and FLOYD_HOARE automaton (currently 46 states, 33 states before enhancement),while ReachableStatesComputation was computing reachable states (5596 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 836]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4904states) and FLOYD_HOARE automaton (currently 46 states, 33 states before enhancement),while ReachableStatesComputation was computing reachable states (5596 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 837]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4904states) and FLOYD_HOARE automaton (currently 46 states, 33 states before enhancement),while ReachableStatesComputation was computing reachable states (5596 states constructed, input type IntersectNwa). - 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 (4904states) and FLOYD_HOARE automaton (currently 46 states, 33 states before enhancement),while ReachableStatesComputation was computing reachable states (5596 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 220 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 855.5s, OverallIterations: 155, TraceHistogramMax: 1, PathProgramHistogramMax: 119, EmptinessCheckTime: 0.6s, AutomataDifference: 731.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 248523 SdHoareTripleChecker+Valid, 198.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248523 mSDsluCounter, 1412940 SdHoareTripleChecker+Invalid, 169.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1331693 mSDsCounter, 6041 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 529581 IncrementalHoareTripleChecker+Invalid, 535622 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6041 mSolverCounterUnsat, 81247 mSDtfsCounter, 529581 mSolverCounterSat, 3.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12344 GetRequests, 611 SyntacticMatches, 72 SemanticMatches, 11661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164310 ImplicationChecksByTransitivity, 574.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5313occurred in iteration=102, InterpolantAutomatonStates: 7523, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.3s AutomataMinimizationTime, 154 MinimizatonAttempts, 392219 StatesRemovedByMinimization, 153 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 109.7s InterpolantComputationTime, 15104 NumberOfCodeBlocks, 15104 NumberOfCodeBlocksAsserted, 155 NumberOfCheckSat, 14949 ConstructedInterpolants, 0 QuantifiedInterpolants, 262585 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 155 InterpolantComputations, 155 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